48
Time Current Curves TD012034EN Effective September 2015 Contents Description Page Catalog Number Selection 4 Digitrip 310+ Electronic Trip Unit Types KD, CKD, HKD, CHKD Long Delay (LD) and Short Delay (SD) with Flat Response and Override (125A) (LSI, LSIG, ALSI, ALSIG) TD012014EN 7 Long Delay (LD) and Short Delay (SD) with Flat Response and Override (250A, 400A) (LSI, LSIG, ALSI, ALSIG) TD012007EN 8 Long Delay Response and Short Delay with I 2 T Response Curve and Override (125A) (LS, LSG) TD012015EN 9 Long Delay Response and Short Delay with I 2 T Response Curve and Override (250A, 400A) (LSI, LSIG, ALSI, ALSIG) TD012008EN 10 Types KDC (Current Limiting) Long Delay (LD) and Short Delay (SD) with Flat Response and Override (125A) (LSI, LSIG, ALSI, ALSIG) TD012016EN 11 Long Delay (LD) and Short Delay (SD) with Flat Response and Override (240A, 400A) (LSI, LSIG, ALSI, ALSIG) TD012012EN 12 Long Delay Response and Short Delay with I 2 T Response Curve and Override (125A) (LS, LSG) TD12017EN 13 Long Delay Response and Short Delay with I 2 T Response Curve and Override (250A, 400A) (LS, LSG) TD012013EN 14 Types KD, CKD, HKD, CHKD, and KDC (125A, 250A and 400A) Ground Fault Delay Response Curve (LSG, LSIG, ALSIG) TD012009EN 15 Remote Maintenance Mode Setting (ALSI, ALSIG) TD012010EN 16 KT Thermal/Magnetic Trip Unit Types KDB, KD, HKD SC-4118-87B 17 Types KDC 2-, 3-, and 4-pole SC-4119-87B 18 Let-through Curves FDC, JDC, KDC, and LDC---240V AD-29-166A 19 FDC, JDC, KDC, and LDC---480V AD-29-166B 20 FDC, JDC, KDC, and LDC---600V AD-29-166C 21 Series C K-Frame 70-400A, 240-600V

Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

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Page 1: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

Time Current Curves TD012034EN Effective September 2015

ContentsDescription Page

Catalog Number Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Digitrip 310+ Electronic Trip UnitTypes KD, CKD, HKD, CHKDLong Delay (LD) and Short Delay (SD) with Flat Response and Override (125A) (LSI, LSIG, ALSI, ALSIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TD012014EN . . . . . . . . .7Long Delay (LD) and Short Delay (SD) with Flat Response and Override (250A, 400A) (LSI, LSIG, ALSI, ALSIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TD012007EN . . . . . . . . .8Long Delay Response and Short Delay with I2T Response Curve and Override (125A) (LS, LSG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TD012015EN . . . . . . . .9Long Delay Response and Short Delay with I2T Response Curve and Override (250A, 400A) (LSI, LSIG, ALSI, ALSIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TD012008EN . . . . . . .10

Types KDC (Current Limiting)Long Delay (LD) and Short Delay (SD) with Flat Response and Override(125A) (LSI, LSIG, ALSI, ALSIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TD012016EN . . . . . . . .11Long Delay (LD) and Short Delay (SD) with Flat Response and Override(240A, 400A) (LSI, LSIG, ALSI, ALSIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TD012012EN . . . . . . . .12Long Delay Response and Short Delay with I2T Response Curve and Override(125A) (LS, LSG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TD12017EN . . . . . . . .13Long Delay Response and Short Delay with I2T Response Curve and Override(250A, 400A) (LS, LSG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TD012013EN . . . . . . . .14

Types KD, CKD, HKD, CHKD, and KDC (125A, 250A and 400A) Ground Fault Delay Response Curve (LSG, LSIG, ALSIG) . . . . . . . . . . . . . . . . . . . . . . . TD012009EN . . . . . . .15 Remote Maintenance Mode Setting (ALSI, ALSIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TD012010EN . . . . . . .16

KT Thermal/Magnetic Trip UnitTypes KDB, KD, HKD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SC-4118-87B . . . . . . .17Types KDC 2-, 3-, and 4-pole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SC-4119-87B . . . . . . . .18

Let-through CurvesFDC, JDC, KDC, and LDC---240V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AD-29-166A . . . . . . . .19FDC, JDC, KDC, and LDC---480V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AD-29-166B . . . . . . . .20FDC, JDC, KDC, and LDC---600V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AD-29-166C . . . . . . . .21

Series C K-Frame 70-400A, 240-600V

Page 2: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

Contents (continued)Digitrip OPTIM 550/1050 Electronic Trip Unit for all K-Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page

Long Delay I2T and Short Delay I2T Repsonse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6924-98 . . . . . . . .22Long Delay I2T and Short Delay Flat Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6925-98 . . . . . . . .23Long Delay I4T and Short Delay Flat Repsonse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6926-98 . . . . . . . .24Instantaneous and Override, 125A Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6927-98 . . . . . . . .25Instantaneous and Override, 250A Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6928-98 . . . . . . . .26Instantaneous and Override, 400A Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6929-98 . . . . . . . .27Ground Fault Trip or Ground Fault Alarm Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6930-98 . . . . . . . .28

Legacy Trip Unit Types

Earth Leakage Module Curves

UL Earth Leakage Curve ELFD, JD, and KD, three- and four-pole, 110-480V . . . . . . . . . . . TC01212005E . . . . . . .29IEC Earth Leakage Curve ELFD, JD, and KD, three- and four-pole, 110-480V . . . . . . . . . . TC01212006E . . . . . . .30

KES Digitrip RMS 310 Electronic Trip UnitTypes KDB, CKDB, HKDB, CHKDB, KD, CKD, HKD, CHKD Types KES3400LS, KES3400LSG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5638-93 . . . . . . . .31 Types KES3400LSI, KES3400LSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5639-93 . . . . . . . .32 Types KES3250LS, KES3250LSG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5640-93 . . . . . . . .33 Types KES3250LSI, KES3250LSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5641-93 . . . . . . . .34 Types KES3125LS, KES3125LSG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5642-93 . . . . . . . .35 Types KES3125LSI, KES3125LSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5643-93 . . . . . . . .36Type KDC Types KES3400LS, KES3400LSG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5644-93 . . . . . . . .37 Types KES3400LSI, KES3400LSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5645-93 . . . . . . . .38 Types KES3250LS, KES3250LSG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5646-93 . . . . . . . .39 Types KES3250LSI, KES3250LSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5647-93 . . . . . . . .40 Types KES3125LS, KES3125LSG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5648-93 . . . . . . . .41 Types KES3125LSI, KES3125LSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5649-93 . . . . . . . .42Types Ground Fault Protection Types KES3400LSG, KES3400LSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5650-93 . . . . . . . .43 Types KES3250LSG, KES3250LSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5651-93 . . . . . . . .44 Types KES3125LSG, KES3125LSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-5652-93 . . . . . . . .45

Type KS Electronic Trip Unit

Type KS (KS3400T, KS3400TG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4156-87A . . . . . . . .46

Note:Time/Current characteristic curves for Series C K-frame circuit breakers--voltages shown in curve headingsare maximum at which the breaker may be applied . Interrupting capacity of individual breaker is tabulatedon each curve .

Note:The following curves are UL489 Listed for use in North America .The following circuit breakers are derived from Eaton, Westinghouse, or Cutler-Hammer history .

Time Current Curves are engineering reference documents for application and coordination purposes only . For field testing molded case circuit breakers, refer to NEMA AB 4 guidelines .

2 EATON www.eaton.com

Proof 9 — November 12, 2015 4:54 PM

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

Page 3: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

3EATON www.eaton.com

otee:N Unless noted below, all curves remain unchanged from their prior revision .

Revision Curve Number Page Date

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

Instantaneous curves adjusted

to meet specifications.

ZSI times added to short delay curves.

7–14

7–14

9 - 2015

9 - 2015

Page 4: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

4

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

KES 3 400 LSIG ZG

Trip Unit Type

KES Number of Poles

34

= Three-pole= Four-pole

Ampere Rating

125250400

Feature

BlankB20B21ZG

= No feature= High load alarm= Ground fault alarm and trip= Zone selective interlocking

Trip Unit

LSLSILSGLSGB22LSIGLSIGB22ALSIALSIGALSIGB22

= 310+ Electronic LS= 310+ Electronic LSI= 310+ Electronic LSG= LS(A), GFA, no trip= 310+ Electronic LSIG= LSI(A), GFA, no trip= LSI with Maintenance Mode= LSIG with Maintenance Mode= ALSI(A) with Maintenance Mode and GFA, no trip

2

22

2

2

2

2

Table 2 . 125/250/400A 310+ Electronic Trip Unit

KD 3 400 F

Number of Poles

34

= Three-pole= Four-pole

Performance at 480 Vac

KDHKDKDCCKDCHKD

Frame Designation

Ampere Rating

400

= 35 kAIC= 65 kAIC= 100 kAIC= 35 kAIC 100% rated= 65 kAIC 100% rated

Table 1 . 400A Frame Only

Catalog Number Selection

This information is presented only as an aid to understanding catalog numbers .It is not to be used to build catalog numbers for circuit breakers or trip units .

K-Frame with 310+ Electronic Trip Unit Technology

KDB 3 400 F T36 ZG W

Performance at 480 Vac

KDBHKDB

= 35 kAIC= 65 kAIC

Number of Poles

3 = Three-pole Ampere Rating

125250400

Frame DesignationFeature

BlankB20B21ZG

= No feature= High load alarm= Ground fault alarm and trip= Zone selective interlocking

Terminal

W = No terminals

Trip Unit

T33T32T35T35B22T36T36B22T38TT3939B22

= 310+ Electronic LS= 310+ Electronic LSI= 310+ Electronic LSG= 310+ Electronic LS(A), GFA, no trip= 310+ Electronic LSIG= 310+ Electronic LSI(A), GFA, no trip= 310+ Electronic ALSI with Maintenance Mode= 310+ Electronic ALSIG with Maintenance Mode= 310+ Electronic ALSI(A) with Maintenance Mode and GFA, no trip

Table 3 . 125/ 250/400A K-Frame 310+ Factory Assembled Breaker 2

Notes

1 Only one B2x feature can be used

2 Not available in four-pole configurations .

Page 5: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

5

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

KD 3 400 F

Number of Poles

234

= Two-pole= Three-pole= Four-pole

Circuit Breaker/Frame Type

DKKDKDBHKDKDC

Suffix

Circuit Breaker/Frame Ampere

Rating

100125150175200225250300350400

CE

FKVWXYBlank

= Cooper terminals= 50% protected neutral pole (four-pole electronic trip unit circuit breaker only)= Frame only= High-magnetic molded-case switch= 500 calibration (thermal-magnetic trip units only)= Without terminals= Load terminals only= Line side terminals only= Standard load and line side terminals

K-Frame with Thermal-Magnetic Trip Unit Technology

Table 4 . Thermal-Magnetic Breaker/Frame

KT 3 400 T

Number of Poles

234

= Two-pole= Three-pole= Four-pole

Trip Unit Type

KT

Suffix

Circuit Breaker/Frame Ampere

Rating

100125150175200225250300350400

T = Trip unit only= Thermal-magnetic

Table 5 . Thermal-Magnetic Trip Unit

KD 3 125 T5 7 W

Circuit Breaker/Frame Type

KDHKDKDCCKDCHKD

Number of Poles

3 = Three-pole Circuit Breaker/FrameAmpere Rating

125250400

Trip ModelTrip Type

= LSI= LSIG= LSIA

Suffix

W = No terminals= Model 550= Model 1050

T5T10

267

K-Frame with OPTIM 550/1050 Trip Unit Technology

Table 6 . OPTIM 550/1050 Circuit Breaker/Frame

Page 6: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

6

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

E

GF

HA

B

DC

IR∑6

87

102

3

54

12 Ii

Isd (xIR)SHORT

12

2015

242

4

107

tR (s)LONG

REMOTE MMSTATUSPush to Trip

68C 4081 H10

120

300Inst.tsd (ms)SHORT

TEST / ALARM

Clear

WindowClear

WindowE

GF

HA

B

DC

IR∑6

87

102

3

54

12 Ii

Isd (xIR)SHORT

12

2015

242

4

107

tR (s)LONG

REMOTE MMSTATUSPush to Trip

68C 4081 H12

Ig (xIn)GND

.8 1.0

.2.3

.6.4

TEST / ALARM

N

PO

QJ

K

ML

Rsd */ t tg (ms)

SHORT / GND

Clear

WindowClear

Window

E

GF

HA

B

DC

IR∑6

87

102

3

54

12 Ii

Isd (xIR)SHORT

12

2015

242

4

107

tR (s)LONG

TEST / ALARMSTATUSPush to Trip

68C 4081 H13

Clear

WindowClear

Window

E

GF

HA

B

DC

IR∑6

87

102

3

54

12 Ii

Isd (xIR)SHORT

12

2015

242

4

107

tR (s)LONG

STATUSPush to Trip

68C 4081 H14

120

300Inst.tsd (ms)SHORT

TEST / ALARM

Clear

WindowClear

Window E

GF

HA

B

DC

IR∑6

87

102

3

54

12

Isd (xIR)SHORT

12

2015

242

4

107

tR (s)LONG

STATUSPush to Trip

68C 4081 H24

Ig (xIn)GND

.8 1.0

.2.3

.6.4

TEST / ALARM

N

PO

QJ

K

ML

Rsd */ t tg (ms)

SHORT / GND

Clear

WindowClear

Window

E

GF

HA

B

DC

IR∑6

87

102

3

54

12

Isd (xIR)SHORT

12

2015

242

4

107

tR (s)LONG

STATUSPush to Trip

68C 4081 H23

120

300Inst.tg (ms)

GND

Ig (xIn)GND

.8 1.0

.2.3

.6.4

TEST / ALARM

Clear

WindowClear

Window

LS

LSI

ALSI (With Maintenance Mode)

LSG

LSIG

ALSIG (With Maintenance Mode)

Figure 1 . Digitrip 310+ Namplates

➇ ➂ ➁

Figure 2 . Front View of L-Frame Type OPTIM Trip Unit (K and N-Frame Designs are Similar)

1 Push-to-Trip Button

2 Mode of Trip/Alarm LEDs

3 Battery Test Pushbutton/LED

4 Automatic Trip Indicator Reset Pushbutton

5 Unit Status LED

6 INCOM Transmit LED (Model 550 requires field IMPACC kit)

7 Battery Compartment/Pro-gramming Port Access Cover

8 Rating Plug

Page 7: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

7

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

10,0

00

.1

.2

.3

.4

.5

.01

1000

5000

4000

3000

2000

20,0

00

.001

TIM

E IN

SEC

ON

DS

Current in Amps

30,0

00

40,0

0050

,000

100,

000

1

.02

.03

.04

.05Fixed InstantaneousOverride

InterruptingRatingDeterminesEnd ofCurve

.01

1

2

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

.02

.03

.04

.05

.06

.07

.08.09

.1

.2

.3

.4

.5

.6.7.8.91

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

ETU

NIM 1

SR

UO

H 2S

DN

OCES

NI EMI T

RU

OH 1

Maximum Total Clearing Time

Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.

Shown at 6 x IR2, 4, 7, 15, 24

seconds +0/–30%

7

2

Available Short DelayPick Up Settings

2–8, 10, 12 x IR ±5% (See Note 7)

2

Current in Multiples of (Ir)

Current in Multiples of (Ir)

1 2 3 4 5 7 10 20 03 05 04 70 7. 5.

1 2 3 4 5 7 10 03 02 .5 .7

8

12

Minimum TotalClearing Time

4

.4

.15

.24

63

1.15

7

.

5

.

300 ms(P, Q, R)

120 ms(M, N, O)

Inst.(J, K, L)

10

1

Digitrip 310+ Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers (125A)

Catalog Types: KD, CKD, HKD, CHKD, KDB, CKDB, HKDB, CHKDB

Trip Unit Types: 32 (LSI), 36 (LSIG), 38 (ALSI), 39 (ALSIG)

Long Delay and Short Delay with Flat Response

Notes:

1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .

2 . Application frequency is 50/60 Hertz .

3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .

5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .

6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .

7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .

8 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 3000A (Tolerance ±15%) .

9 . Maximum clearing time when using zone selective interlocking is 62ms .

(Ir) / (In) 125A

ABCDE F G H

55A60A70A80A90A100A110A125A

Figure 3 . Digitrip 310+ Trip Units (125A), Long Delay and Short Delay with Flat Response and Override (LSI, LSIG, ALSI, ALSIG) – Curve Number TD012014EN, September 2015

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 35 25HKD, CHKD, HKDB, CHKDB 100 65 35

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 40 40HKD, CHKD, HKDB, CHKDB 100 65 65

240V 380V 415VBreaker Type

Available Sensors

Rated Amperes

Interrupting Rating

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .

Page 8: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

Fixed InstantaneousOverride 4400A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

TIM

E IN

SE

CO

ND

S

Current in Amps

30,0

00

40,0

00

50,0

00

100,

000

1

.02

.03

.04

.05

.2

.3

.4

.5

.01

1

2

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4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

.02

.03

.04

.05

.06

.07

.08.09

.1

.2

.3

.4

.5

.6.7.8.91

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

ETU

NIM 1

SR

UO

H 2S

DN

OC

ES

NI E

MI TR

UO

H 1

Maximum Total Clearing Time

Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.

Shown at 6 x IR2, 4, 7, 15, 24

seconds +0/–30%

7

2

Available Short DelayPick Up Settings

2–8, 10, 12 x IR ±5% (See Note 7)

2

Current in Multiples of (Ir)

Current in Multiples of (Ir)

1 2 3 4 5 7 10 03 02 05 04 70 7. 5.

1 2 3 4 5 7 10 03 02 .5 .7

8

12

Minimum TotalClearing Time

4

.4

.15

.24

63

1.15

7

.

5

.

300 ms(P, Q, R)

120 ms(M, N, O)

Inst.(J, K, L)

10

1

8

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Digitrip 310+ Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers (250A and 400A)

Catalog Types: KD, CKD, HKD, CHKD, KDB, CKDB, HKDB, CHKDB

Trip Unit Types: 32 (LSI), 36 (LSIG), 38 (ALSI), 39 (ALSIG)

Long Delay and Short Delay with Flat Response

Notes:

1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .

2 . Application frequency is 50/60 Hertz .

3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .

5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .

6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .

7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .

8 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 4400A (Tolerance ±15%) . For IR = In = 400A, the fixed instantaneous hardware override takes precedence over the SDPU setting of 12 x IR .

9 . Maximum clearing time when using zone selective interlocking is 62ms .

(Ir) / (In) 250A 400A

ABCDE F G H

100A 160A125A 200A150A 225A160A 250A175A 300A200A 315A225A 350A250A 400A

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 35 25HKD, CHKD, HKDB, CHKDB 100 65 35

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 40 40HKD, CHKD, HKDB, CHKDB 100 65 65

240V 380V 415VBreaker Type

Figure 4 . Digitrip 310+ Trip Units (250A and 400A), Long Delay and Short Delay with Flat Response and Override (LSI, LSIG, ALSI, ALSIG) - Curve Number TD012007EN, September 2015

Interrupting Rating

Available Sensors

Rated Amperes

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .

Page 9: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

Fixed InstantaneousOverride 4400A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

TIM

E IN

SE

CO

ND

S

Current in Amps

30,0

00

40,0

00

50,0

00

100,

000

1

.02

.03

.04

.05

.2

.3

.4

.5

.01

1

2

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

.02

.03

.04

.05

.06

.07

.08.09

.1

.2

.3

.4

.5

.6.7.8.91

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

ETU

NIM 1

SR

UO

H 2S

DN

OC

ES

NI E

MI TR

UO

H 1

Maximum Total Clearing Time

Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.

Shown at 6 x IR2, 4, 7, 15, 24

seconds +0/–30%

7

2

Available Short DelayPick Up Settings

2–8, 10, 12 x IR ±5% (See Note 7)

2

Current in Multiples of (Ir)

Current in Multiples of (Ir)

1 2 3 4 5 7 10 03 02 05 04 70 7. 5.

1 2 3 4 5 7 10 03 02 .5 .7

8

12

Minimum TotalClearing Time

4

.4

.15

.24

63

1.15

7

.

5

.

300 ms(P, Q, R)

120 ms(M, N, O)

Inst.(J, K, L)

10

1

9

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

.01

1

2

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

.02

.03

.04

.05

.06

.07

.08.09

.1

.2

.3

.4

.5

.6.7.8.91

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

ETU

NIM 1

SR

UO

H 2S

DN

OC

ES

NI E

MI TR

UO

H 1

Maximum Total Clearing Time

Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.

Shown at 6 x IR 2, 4, 7, 15, 24

Seconds +0/–30%

7

2

Available Short DelayPickup Settings

2–8, 10, 12 x IR ±5% (See Note 7)

2

Current in Multiples of (Ir)

Current in Multiples of (Ir)

1 2 3 4 5 7 10 20 07 05 04 03 7. 5.

1 2 3 4 5 7 10 03 02 .5 .7

8 12

I2T Short Delay (See Note 8)

Minimum TotalClearing Time

10

7

5

4

.

.4

.

.15

.24

6

.

3

1.15

See Note 9

67 ms

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

TIM

E IN

SE

CO

ND

S

Current in Amps

30,0

00

40,0

00

50,0

00

100,

000

.02

.03

.04

.05

InterruptingRatingDeterminesEnd ofCurve

Fixed InstantaneousOverride

Digitrip 310+ Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers (125A)

Catalog Types: KD, CKD, HKD, CHKD, KDB, CKDB, HKDB, CHKDB

Trip Unit Types: 33 (LS), 35 (LSG)

Long Delay and Short Delay with I2T Response

Notes:

1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .

2 . Application frequency is 50/60 Hertz .

3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .

5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .

6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .

7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .

8 . Short Delay I2T band has a tolerance of ±15% .

9 . Breakpoint back to FLAT response occurs at 8x IR for upper line of the I2T curve .

10 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 3000A (Tolerance ±15%) .

11 . Maximum clearing time when using zone selective interlocking is 62ms .

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 35 25HKD, CHKD, HKDB, CHKDB 100 65 35

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 40 40HKD, CHKD, HKDB, CHKDB 100 65 65

240V 380V 415VBreaker Type

(Ir) / (In) 125A

ABCDE F G H

55A60A70A80A90A100A110A125A

Figure 5 . Digitrip 310+ Trip Units (125A), Long Delay Response and Short Delay with I2T Response Curve and Override (LS, LSG) - TD012015EN, September 2015

Available Sensors

Rated Amperes

Interrupting Rating

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .

Page 10: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

10

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

.01

1

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3

4

5

6789

10

20

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40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

.02

.03

.04

.05

.06

.07

.08.09

.1

.2

.3

.4

.5

.6.7.8.91

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

ETU

NIM 1

SR

UO

H 2S

DN

OC

ES

NI E

MI TR

UO

H 1

Maximum Total Clearing Time

Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.

Shown at 6 x IR 2, 4, 7, 15, 24

Seconds +0/–30%

7

2

Available Short DelayPickup Settings

2–8, 10, 12 x IR ±5% (See Note 7)

2

Current in Multiples of (Ir)

Current in Multiples of (Ir)

1 2 3 4 5 7 10 20 07 05 04 03 7. 5.

1 2 3 4 5 7 10 03 02 .5 .7

8 12

I2T Short Delay (See Note 8)

Minimum TotalClearing Time

10

7

5

4

.

.4

.

.15

.24

6

.

3

1.15

See Note 9

67 ms

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

TIM

E IN

SE

CO

ND

S

Current in Amps

30,0

00

40,0

00

50,0

00

100,

000

.02

.03

.04

.05

gInterruptingRatingDeterminesEnd ofCurve

Fixed InstantaneousOverride

Digitrip 310+ Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers (250A and 400A)

Catalog Types: KD, CKD, HKD, CHKD, KDB, CKDB, HKDB, CHKDB

Trip Unit Types: 33 (LS), 35 (LSG)

Long Delay and Short Delay with I2T Response

Notes:

1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .

2 . Application frequency is 50/60 Hertz .

3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .

5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .

6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .

7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .

8 . Short Delay I2T band has a tolerance of ±15% .

9 . Breakpoint back to FLAT response occurs at 8x IR for upper line of the I2T curve .

10 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 4400A (Tolerance ±15%) . For IR = In = 400A, the fixed instantaneous hardware override takes precedence over the SDPU setting of 12 x IR .

11 . Maximum clearing time when using zone selective interlocking is 62ms .

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 35 25HKD, CHKD, HKDB, CHKDB 100 65 35

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 40 40HKD, CHKD, HKDB, CHKDB 100 65 65

240V 380V 415VBreaker Type

(Ir) / (In) 250A 400A

ABCDE F G H

100A 160A125A 200A150A 225A160A 250A175A 300A200A 315A225A 350A250A 400A

Figure 6 . Digitrip 310+ Trip Units (250A and 400A), Long Delay Response and Short Delay with I2T Response Curve and Override (LS, LSG) – Curve Number TD012008EN, September 2015

Interrupting Rating

Available Sensors

Rated Amperes

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .

Page 11: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

11

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

.02

.03

.04

.05

10,0

00

.1

.01

5000

4000

3000

2000

20,0

00

.001

TIM

E IN

SE

CO

ND

S

Current in Amps

30,0

00

40,0

0050

,000

100,

000

1

200,

000

Fixed InstantaneousOverride

InterruptingRatingDeterminesEnd ofCurve

600 Vac

480 Vac

240 Vac

MaximumInterruptingTime

.01

1

2

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

.02

.03

.04

.05

.06

.07

.08.09

.1

.2

.3

.4

.5

.6.7.8.91

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

ETU

NIM 1

SR

UO

H 2S

DN

OC

ES

NI E

MI TR

UO

H 1

Maximum Total Clearing Time

Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.

Shown at 6 x IR2, 4, 7, 15, 24

seconds +0/–30%

7

2

Available Short DelayPick Up Settings

2–8, 10, 12 x IR ±5% (See Note 7)

2

Current in Multiples of (Ir)

Current in Multiples of (Ir)

1 2 3 4 5 7 10 20 03 05 04 70 7. 5.

1 2 3 4 5 7 10 03 02 .5 .7

8

12

Minimum TotalClearing Time

4

.4

.15

.24

63

1.15

7

.

5

.

300 ms(P, Q, R)

120 ms(M, N, O)

Inst.(J, K, L)

10

Digitrip 310+ Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers (125A)

Catalog Types: KDC (Current Limiting)

Trip Unit Types: 32 (LSI), 36 (LSIG), 38 (ALSI), 39 (ALSIG)

Long Delay and Short Delay with Flat Response

Notes:

1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .

2 . Application frequency is 50/60 Hertz .

3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .

5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .

6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .

7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .

8 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 3000A (Tolerance ±15%) .

9 . Maximum clearing time when using zone selective interlocking is 62ms .

(Ir) / (In) 125A

ABCDE F G H

55A60A70A80A90A100A110A125A

Figure 3 . Digitrip 310+ Trip Units (125A), Long Delay and Short Delay with Flat Response and Override (LSI, LSIG, ALSI, ALSIG) – Curve Number TD012016EN, September 2015

UL/CSA rms Sym . kA, 50/60 Hz

KDC 200 100 65

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KDC 200 100 50

240V 380V 415VBreaker Type

Available Sensors

Rated Amperes

Interrupting Rating

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .

Page 12: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

12

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Series CK-Frame

.02

.03

.04

.05

10,0

00

.1

.01

5000

4000

3000

2000

20,0

00

.001

TIM

E IN

SE

CO

ND

S

Current in Amps

30,0

00

40,0

0050

,000

100,

000

1

200,

000

Fixed InstantaneousOverride

InterruptingRatingDeterminesEnd ofCurve

600 Vac

480 Vac

240 Vac

MaximumInterruptingTime

.01

1

2

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

.02

.03

.04

.05

.06

.07

.08.09

.1

.2

.3

.4

.5

.6.7.8.91

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

ETU

NIM 1

SR

UO

H 2S

DN

OC

ES

NI E

MI TR

UO

H 1

Maximum Total Clearing Time

Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.

Shown at 6 x IR2, 4, 7, 15, 24

seconds +0/–30%

7

2

Available Short DelayPick Up Settings

2–8, 10, 12 x IR ±5% (See Note 7)

2

Current in Multiples of (Ir)

Current in Multiples of (Ir)

1 2 3 4 5 7 10 20 03 05 04 70 7. 5.

1 2 3 4 5 7 10 03 02 .5 .7

8

12

Minimum TotalClearing Time

4

.4

.15

.24

63

1.15

7

.

5

.

300 ms(P, Q, R)

120 ms(M, N, O)

Inst.(J, K, L)

10

Digitrip 310+ Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers (250A and 400A)

Catalog Types: KDC (Current Limiting)

Trip Unit Types: 32 (LSI), 36 (LSIG), 38 (ALSI), 39 (ALSIG)

Long Delay and Short Delay with Flat Response

Notes:

1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .

2 . Application frequency is 50/60 Hertz .

3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .

5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .

6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .

7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .

8 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 4400A (Tolerance ±15%) . For IR = In = 400A, the fixed instantaneous hardware override takes precedence over the SDPU setting of 12 x IR .

9 . Maximum clearing time when using zone selective interlocking is 62ms .

(Ir) / (In) 250A 400A

ABCDE F G H

100A 160A125A 200A150A 225A160A 250A175A 300A200A 315A225A 350A250A 400A

UL/CSA rms Sym . kA, 50/60 Hz

KDC 200 100 65

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KDC 200 100 50

240V 380V 415VBreaker Type

Figure 4 . Digitrip 310+ Trip Units (250A and 400A), Long Delay and Short Delay with Flat Response and Override (LSI, LSIG, ALSI, ALSIG) - Curve Number TD012012EN, September 2015

Interrupting Rating

Available Sensors

Rated Amperes

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .

Page 13: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

13

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

.01

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4000

5000

6000700080009000

10000

.02

.03

.04

.05

.06

.07

.08.09

.1

.2

.3

.4

.5

.6.7.8.91

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

ETU

NIM 1

SR

UO

H 2S

DN

OC

ES

NI E

MI TR

UO

H 1

Maximum Total Clearing Time

Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.

Shown at 6 x IR 2, 4, 7, 15, 24

Seconds +0/–30%

7

2

Available Short DelayPickup Settings

2–8, 10, 12 x IR ±5% (See Note 7)

2

Current in Multiples of (Ir)

Current in Multiples of (Ir)

1 2 3 4 5 7 10 20 07 05 04 03 7. 5.

1 2 3 4 5 7 10 03 02 .5 .7

8 12

I2T Short Delay (See Note 8)

Minimum TotalClearing Time

10

7

5

4

.

.4

.

.15

.24

6

.

3

1.15

See Note 9

67 ms

Fixed InstantaneousOverride Interrupting

RatingDeterminesEnd ofCurve

10,0

00

.1

.01

5000

4000

3000

2000

20,0

00

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

200,

000

600 Vac

480 Vac

240 Vac

.02

.03

.04

.05

SECO

NDS

.001

Digitrip 310+ Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers (125A)

Catalog Types: KDC (Current Limiting)

Trip Unit Types: 33 (LS), 35 (LSG)

Long Delay and Short Delay with I2T Response

Notes:

1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .

2 . Application frequency is 50/60 Hertz .

3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .

5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .

6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .

7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .

8 . Short Delay I2T band has a tolerance of ±15% .

9 . Breakpoint back to FLAT response occurs at 8x IR for upper line of the I2T curve .

10 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 3000A (Tolerance ±15%) .

11 . Maximum clearing time when using zone selective interlocking is 62ms .

UL/CSA rms Sym . kA, 50/60 Hz

KDC 200 100 65

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KDC 200 100 50

240V 380V 415VBreaker Type

(Ir) / (In) 125A

ABCDE F G H

55A60A70A80A90A100A110A125A

Figure 5 . Digitrip 310+ Trip Units (125A), Long Delay Response and Short Delay with I2T Response Curve and Override (LS, LSG) - TD012017EN, September 2015

Available Sensors

Rated Amperes

Interrupting Rating

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .

Page 14: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

14

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

.01

1

2

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

.02

.03

.04

.05

.06

.07

.08.09

.1

.2

.3

.4

.5

.6.7.8.91

3

4

5

6789

10

20

30

40

50

60708090

100

1000900800700600

500

400

300

200

2000

3000

4000

5000

6000700080009000

10000

ETU

NIM 1

SR

UO

H 2S

DN

OC

ES

NI E

MI TR

UO

H 1

Maximum Total Clearing Time

Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.

Shown at 6 x IR 2, 4, 7, 15, 24

Seconds +0/–30%

7

2

Available Short DelayPickup Settings

2–8, 10, 12 x IR ±5% (See Note 7)

2

Current in Multiples of (Ir)

Current in Multiples of (Ir)

1 2 3 4 5 7 10 07 05 04 03 02 7. 5.

1 2 3 4 5 7 10 03 02 .5 .7

8 12

I2T Short Delay (See Note 8)

Minimum TotalClearing Time

10

7

5

4

.

.4

.

.15

.24

6

.

3

1.15

See Note 9

67 ms

InterruptingRatingDeterminesEnd ofCurve

.02

.03

.04

.05

TIM

E IN

SEC

ON

DS

Fixed InstantaneousOverride 4400A

MaximumInterruptingTime

600 Vac

480 Vac

240 Vac

10,0

00

.1

.01

5000

4000

3000

2000

20,0

00

.001

Current in Amps

30,0

00

40,0

00

50,0

00

100,

000

200,

000

Digitrip 310+ Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers (250A and 400A)

Catalog Types: KDC (Current Limiting)

Trip Unit Types: 33 (LS), 35 (LSG)

Long Delay and Short Delay with I2T Response

Notes:

1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .

2 . Application frequency is 50/60 Hertz .

3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .

5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .

6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .

7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .

8 . Short Delay I2T band has a tolerance of ±15% .

9 . Breakpoint back to FLAT response occurs at 8x IR for upper line of the I2T curve .

10 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 4400A (Tolerance ±15%) . For IR = In = 400A, the fixed instantaneous hardware override takes precedence over the SDPU setting of 12 x IR .

11 . Maximum clearing time when using zone selective interlocking is 62ms .

UL/CSA rms Sym . kA, 50/60 Hz

KDC 200 100 65

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KDC 200 100 50

240V 380V 415VBreaker Type

(Ir) / (In) 250A 400A

ABCDE F G H

100A 160A125A 200A150A 225A160A 250A175A 300A200A 315A225A 350A250A 400A

Figure 6 . Digitrip 310+ Trip Units (250A and 400A), Long Delay Response and Short Delay with I2T Response Curve and Override (LS, LSG) – Curve Number TD012013EN, September 2015

Interrupting Rating

Available Sensors

Rated Amperes

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .

Page 15: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

15

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

.01

2

3

4

5

6

8

10

20

30

40

50

60708090

100

1000900800700

600

500

400

300

200

.02

.03

.04

.05

.06

.07

.08

.09.1

.2

.3

.4

.5

.6

.7

.8

.91

7

9

2000

3000

4000

5000

6000

700080009000

10000

1 M

INU

TES

DN

OC

ES

NI E

MIT

Ground Current in Multiples of (In)

.1 0.1 7. 5. 4. 3.2. 2.0

.1 4. 3.2. .5 .7 1.0 2.0

Ground Fault Pickup Settings (Ig)(Tolerance 10%)

.4X

.3X

.2X 1X.6X

.8X

Inst.(J, M, P)

120 ms(K, N, Q)

300 ms(L, O, R)

In 400A

160A200A225A250A300A315A350A400A

250A

100A125A150A160A175A200A225A250A

ABCDEFGH

125A

55A60A70A80A90A100A110A125A

IR∑

Ii

I (xIR)tR (s)

REMOTE MMSTATUSPush to Trip

68C 4081

Ig (xIn)GND

TEST / ALARM

*t t (ms)

Clear

Window

Clear

Window

IR∑

Ii

I (xIR)tR (s)

STATUS

68C 4081

Ig (xIn)GND

TEST / ALARM

*t t (ms)

Clear

Window

Clear

Window

Digitrip 310+ Circuit Breaker Time/Current Curves (Ground Current)

Series C K-Frame Circuit Breakers (125A, 250A and 400A)

Catalog Types: KD, CKD, HKD, CHKD, KDB, CKDB, HKDB, CHKDB, and KDC

Trip Unit Types: 35 (LSG), 36 (LSIG), and 39 (ALSIG)

Ground fault delay response notes:

1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .

2 . Application frequency is 50/60 Hertz .

3 . Trip units are suitable for functional field testing with test kit CAT # MTST230V .

4 . For testing information, please contact Eaton .

Ig (x In) 125A 250A 400A

.2x

.3x

.4x

.6x

.8x1.0x

25 50 8038 75 12050 100 16075 150 240100 200 320125 250 400

E

GF

HA

B

DC

IR∑6

87

102

3

54

12

Isd (xIR)SHORT

12

2015

242

4

107

tR (s)LONG

STATUSPush to Trip

68C 4081 H23

120

300Inst.tg (ms)

GND

Ig (xIn)GND

.8 1.0

.2.3

.6.4

TEST / ALARM

Clear

WindowClear

Window

LSG

E

GF

HA

B

DC

IR∑6

87

102

3

54

12

Isd (xIR)SHORT

12

2015

242

4

107

tR (s)LONG

STATUSPush to Trip

68C 4081 H24

Ig (xIn)GND

.8 1.0

.2.3

.6.4

TEST / ALARM

N

PO

QJ

K

ML

Rsd */ t tg (ms)

SHORT / GND

Clear

WindowClear

Window

LSIG

E

GF

HA

B

DC

IR∑6

87

102

3

54

12 Ii

Isd (xIR)SHORT

12

2015

242

4

107

tR (s)LONG

REMOTE MMSTATUSPush to Trip

68C 4081 H12

Ig (xIn)GND

.8 1.0

.2.3

.6.4

TEST / ALARM

N

PO

QJ

K

ML

Rsd */ t tg (ms)

SHORT / GND

Clear

WindowClear

Window

ALSIG (With Maintenance Mode)

Note: Refer to table below for variations.

Figure 7 . Ground Fault Delay Response Curve (LSG, LSIG, ALSIG) - Curve Number TD012009EN

tg (ms)

tsd(ms)

120 K N Q

300 L O R

* Inst. J M P

Inst.120300

Settings

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .

Page 16: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

16

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Current in Multiples of Rating ( )In

.01

2

.02

.03

.04

.05

.06

.07

.08

.09.1

.2

.3

.4

.5

.6

.7

.8

.91

3

4

5

6789

10

1 2 3 4.5 .6 .7 .8 .9 10 20 30 40 505 6 7 8 9

2.5

Maintenance Mode Trip

TIM

EIN

SE

CO

ND

S

Applicationdeterminesend of curve

Notes:

1. The Maintenance Mode feature must be ENABLED via application of 24 Vdc for these curves to apply. The blue LED is lit when in Maintenance Mode.

2. The end of the curve is determined by the interrupting rating of the circuit breaker.

3. Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current.

4. Nominal Va lues (Pickup) (Tolerance is ±15%) 2.5 x In.

5. The total clearing times shown are conservative and consider the maximum response time of the trip unit, the circuit breaker opening, and the interruption of the current in the worst case conditions such as: maximum rated voltages, single-phaseinterruption, and minimum power factor. Faster clearing times are possibledepending on the specific system conditions.

Contact Eaton for additional information.

Digitrip 310+ Circuit Breaker Time/Current Curves

Maintenance Mode Setting

Series C K-Frame Trip Unit Nameplates

E

GF

HA

B

DC

IR∑6

87

102

3

54

12 Ii

Isd (xIR)SHORT

12

2015

242

4

107

tR (s)LONG

REMOTE MMSTATUSPush to Trip

68C 4081 H10

120

300Inst.tsd (ms)SHORT

TEST / ALARM

Clear

WindowClear

Window

ALSI (With Maintenance Mode)

E

GF

HA

B

DC

IR∑6

87

102

3

54

12 Ii

Isd (xIR)SHORT

12

2015

242

4

107

tR (s)LONG

REMOTE MMSTATUSPush to Trip

68C 4081 H12

Ig (xIn)GND

.8 1.0

.2.3

.6.4

TEST / ALARM

N

PO

QJ

K

ML

Rsd */ t tg (ms)

SHORT / GND

Clear

WindowClear

Window

ALSIG (With Maintenance Mode)

Figure 8 . Maintenance Mode Setting (ALSI, ALSIG) - Curve Number TD012010EN, February 2014

Left Side of Breaker

YellowBlack

Blue

Red

24 Vdc

Relay Wiring

NOC

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .

Page 17: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

17

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

0.001

0.010

0.100

1.000

10.000

100.000

1000.000

10,000.000

10 100 1000 10,000 100,000 1,000,000

Tim

e in

Sec

onds

Current in Percent of Breaker Trip Unit Rating (In)

Maximum Minimum

Maximum Single-Pole Trip Times at 25°C

Interruption Rating Determines End of Curve

+30%

/ –2

0%

+30%

/ –2

0%

Maximum Minimum

Adjustable Magnetic Trip, 5x - 10x

10 100 1000

Current in Percent of Breaker Trip Unit Rating (In)

Figure 9 . Thermal-Magnetic Series C Types KDB, KD, HKD Circuit Breakers - Curve Number SC-4118-87B, February 2014

Thermal-Magnetic Circuit Breaker Time/Current Curves

Series C K-Frame Circuit Breakers (250A and 400A)

Catalog Types: KDB, KD, HKD, DK

For application and coordination purposes only . Based on cold start at rated ambient temperature . Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series . Tested in open air .

UL/CSA rms Sym . kA, 50/60 Hz

KDB 65 35 25 10KD 65 35 25 10HKD 100 65 35 22DK 65 - - 10

240V 480V 600V 250VdcBreaker Type

100-400

Instantaneous Trip Amperes

Breaker Rating

Rated Amperes (In)

Settings are 500 to 1000% of trip unit rating. For DC, instantaneous trip may be 42% higher.

TypicalTrip UnitNameplate

Individual PoleAdjustments

ThermalMagneticTrip Unit

C Push to Trip

MagneticMultiples Of In

10

7.5

10 5

7.5

10 5

Amps(In)

Cat.No.40°C

7.5

5

Page 18: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

18

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

0.001

0.010

0.100

1.000

10.000

100.000

1000.000

10000.000

10 100 1000 10000 100000 1000000

Tim

e in

Sec

onds

Current in Percent of Breaker Trip Unit Rating (In)

Maximum Minimum

Maximum Single Pole Trip Times at 25°C

Adjustable magnetic trip

interruption rating determines end of curve 600V AC

480V AC

240V AC

+30

%-2

0%

+30

%-2

0%

Maximum Minimum

Current in Percent of Breaker Trip Unit Rating (In)

10 100 1000Thermal-Magnetic Circuit Breaker Time/Current Curves

Series C K-Frame Circuit Breakers

Catalog Types: KDC Current Limiting Circuit Breakers, 2-, 3- and 4-Pole

For application and coordination purposes only . Based on 40°C ambient, cold starConnected with four (4) feet of rated wire (60°C up to 125 amps . 75°C above 125 amps) per terminal . Tested in open air with current in all poles . Instantaneous calibration based on single-pole tests .

Maximum Voltage: 600 Vac (60 Hz) – 250 Vdc

UL/CSA rms Sym . kA, 50/60 Hz

KDC 200 100 65 22

240V 480V 600V 250VdcBreaker Type

100-400

Instantaneous Trip Amperes

Breaker Rating

Rated Amperes (In)

500 to 1000% of trip unit rating (See Figure Below)(Dc values are approximately 40% higher)

Single-pole test data at 25°C based on NEMA Procedures (AB 4) for verifying performance of molded-case circuit breakers .

Note: For additional information on the trip unit, see IL 29C603 .

Figure 10 . Thermal-Magnetic Series C Type KDC Circuit Breakers - Curve Number SC-4119-87B, February 2014

Page 19: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

19

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Ava

ilab

le S

ho

rt C

ircu

it C

urr

ent,

kA

rm

s

Peak Let-Through I2t, A2 sec

LD

C36

00

KD

C34

00

JDC

3250

FD

C32

25

1000 kA

500 kA

100 kA

50 kA

10 kA

5 kA

10,0

00,0

00

5,00

0,00

0

1,00

0,00

0

500,

000

100,

000

10,0

00

1 kA

Ava

ilab

le S

ho

rt C

ircu

it C

urr

ent,

kA

rm

s

Peak Let-Through Current, kA

LD

C36

00

KD

C34

00

JDC

3250

FD

C32

25

50 k

A

5 kA

10 k

A

100

kA

100 kA

500 kA

1000 kA

5 kA

50 kA

10 kA

1 kA

avai

l. Ip

for

1st

sym

m. 1

/2 c

ycle

1 kA

Figure 11 . Peak Let-Through I2t Curve — 240 V - Curve Number AD-29-166A

Figure 12 . Peak Let-Through Current Curve — 240 V - Curve Number AD-29-166A

Page 20: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

Ava

ilab

le S

ho

rt C

ircu

it C

urr

ent,

kA

rm

s

Peak Let-Through I2t, A2 sec

LD

C36

00

KD

C34

00

JDC

3250

FD

C32

25

1000 kA

500 kA

100 kA

50 kA

10 kA

5 kA

1 kA

10,0

00,0

00

5,00

0,00

0

1,00

0,00

0

500,

000

100,

000

Ava

ilab

le S

ho

rt C

ircu

it C

urr

ent,

kA

rm

s

Peak Let-Through Current, kA

LD

C36

00

KD

C34

00

JDC

3250

FD

C32

25

1000 kA

500 kA

100 kA

50 kA

10 kA

5 kA

1 kA

avai

l. Ip

for

1st

sym

m. 1

/2 c

ycle

50 k

A

5 kA

10 k

A

100

kA

1 kA

20

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Figure 13 . Peak Let-Through I2t Curve — 480 V - Curve Number AD-29-166B

Figure 14 . Peak Let-Through Current — 480 V - Curve Number AD-29-166B

Page 21: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

Ava

ilab

le S

ho

rt C

ircu

it C

urr

ent,

kA

rm

s

Peak Let-Through I2t, A2 sec

LD

C36

00

KD

C34

00

JDC

3250

FD

C31

50

100 kA

50 kA

10 kA

5 kA

1 kA

10,0

00,0

00

5,00

0,00

0

1,00

0,00

0

500,

000

100,

000

Ava

ilab

le S

ho

rt C

ircu

it C

urr

ent,

kA

rm

s

Peak Let-Through Current, kA

LD

C36

00

KD

C34

00

JDC

3250

FD

C31

50

avai

l. Ip

for

1st

sym

m. 1

/2 c

ycle

100 kA

50 kA

10 kA

5 kA

1 kA

50 k

A

5 kA

10 k

A

100

kA

1 kA

21

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Figure 15 . Peak Let-Through I2t — 600 V - Curve Number AD-29-166C

Figure 16 . Peak Let-Through Current — 600 V - Curve Number AD-29-166C

Page 22: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

.01 .01

10,000

5,000

3,000

2,000

1,000

500

300

200

100

50

30

20

10

5

3

2

1 11

.5 5.5.

.3 3.3.

.2 2.2.

.1 1.1.

.05 .05

.03 .03

.02 .02

ET

UNI

M 1

RU

OH

1S

RU

OH

2S

DN

OC

ES

NIE

MIT

SD

NO

CE

SNI

EMI

T

500

600

700

800

9002 3 20 304 5 6 7 40 50 60 70 80 90 100

300

100.8

0.9 1

0.5

0.6

0.7 8 9

20 30 40 50 60 70 80 900.5

2 3 5 6 7 108 9

200

400

CURRENT IN MULTIPLES OF LONG DELAY SETTING I

CURRENT IN MULTIPLES OF LONG DELAY SETTING I

1000

2000

3000

4000

5000

6000

7000

8000

9000

10,0

00

0.8

0.7

0.6

0.9

1

MinimumTotalClearingTime

MaximumTotalClearingTime

AvailableLong DelayTime SettingsShown @ 6 x I r

2-24 seconds +0 ⁄-30%in 0.1 secondincrements

AvailableShort DelayPickup Settings1.5 to 8 x Ir5% in 0.1

increments

Available I t SlopeShort Delay Time Settings0.1 to 0.5 seconds in0.01 second increments

2

Available Long DelayPickup Settings (I )r0.4 to 1 x I = In rin 0.01 increments

.5

.3

.1

r

r

4

7

2

24

100

ApplicationDeterminesEnd of Curve

+-

1.15

Figure 17 . Digitrip Optim Long Delay I2T and Short Delay I2T Response - Curve Number SC-6924-98, May 1998

Digitrip OPTIM 550/1050 Circuit Breaker Time/Current Curves

(Phase Current)

Series C K-Frame Circuit Breakers

Long Delay I2T and Short Delay I2T Response

UL/CSA rms Sym . kA, 50/60 Hz

125 125 ORPK125A125 50 -125 75 -1000125 110 ORPK125A110 44 -110 66 - 880125 100 ORPK125A100 40 -100 60 - 800125 90 ORPK125A090 36 - 90 54 - 720125 70 ORPK125A070 28 - 70 42 - 560125 63 ORPK125A063 25 - 63 37.5 - 504250 250 ORPK250A250 100 - 250 150 - 2000250 225 ORPK250A225 90 - 225 135 - 1800 250 200 ORPK250A200 80 - 200 120 - 1600250 175 ORPK250A175 70 - 175 105 - 1400250 160 ORPK250A160 64 - 160 96 - 1280250 150 ORPK250A150 60 - 150 90 - 1200250 125 ORPK250A125 50 - 125 75 - 1000400 400 ORPK400A400 160 - 140 240 - 3200400 350 ORPK400A350 140 -350 210 - 2800400 300 ORPK400A300 120 - 300 180 - 2400400 250 ORPK400A250 100 - 250 150 - 2000400 225 ORPK400A225 90 - 225 135 -1800400 200 ORPK400A200 80 - 200 120 -1600

Maximum Ampere Rating

KD, CKD 65 35 25HKD, CHKD 100 65 35KDC 200 100 50

240V 480V 600VBreaker Type

Available Rating Plugs

1 For field testing primary injection methods, follow NEMA AB4 guidelines .

2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .

3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

5 This curve is shown as a multiple of the Long Delay Pick-up Setting, (Ir) . This Ir setting is programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer, or a Remote PC (IMPACC System) .

6 The Long Delay Pick-up Point (indicated by a flashing LED on the product) nominally occurs above 115% of the Ir current, with a +/- 5% tolerance . The short delay settings have conventional 100%, +/- 5% as the pickup points .

7 For additional curve tolerances contact Eaton .

8 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .

Rating Plug Ampere Rating(In)

Rating Plug Catalog Number

Long DelayPickup (Ir) Range0 .4 to 1 x InAmperes

Short DelayPickup Range1 .5 to 8 x IrAmperes

Interrupting Rating

.01 .01

10,000

5,000

3,000

2,000

1,000

500

300

200

100

50

30

20

10

5

3

2

1 11

.5 .5.5

.3 .3.3

.2 .2.2

.1 .1.1

.05 .05

.03 .03

.02 .02E

TU

NIM

1R

UO

H 1

SR

UO

H 2

SD

NO

CE

SNI

EMI

T

SD

NO

CE

SNI

EMI

T

500

600

700

800

9002 3 20 304 5 6 7 40 50 60 70 80 90 100

100

300

100.8

0.9 1

0.5

0.6

0.7 8 9

20 30 40 50 60 70 80 900.5

2 3 5 6 7 108 9

200

400

CURRENT IN MULTIPLES OF LONG DELAY SETTING I

CURRENT IN MULTIPLES OF LONG DELAY SETTING I

1000

2000

3000

4000

5000

6000

7000

8000

9000

10,0

00

0.8

0.7

0.6

0.9

1

MinimumTotalClearingTime

MaximumTotalClearingTime

AvailableLong DelayTime SettingsShown @ 6 x Ir2-24 seconds +0 ⁄-30%in 0.1 secondincrements

AvailableShort DelayPickup Settings1.5 to 8 x Ir5% in 0.1

increments

Available FlatShort Delay Time Settings0.1 to 0.5 secondsin 0.01 second increments

Available Long DelayPickup Settings (I )r0.4 to 1 x I = In rin 0.01 increments

ApplicationDeterminesEnd of Curve

.1

.5

.3

r

r

24

7

4

2

+

1.15

22

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Page 23: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

.01 .01

10,000

5,000

3,000

2,000

1,000

500

300

200

100

50

30

20

10

5

3

2

1 11

.5 .5.5

.3 .3.3

.2 .2.2

.1 .1.1

.05 .05

.03 .03

.02 .02

ET

UNI

M 1

RU

OH

1S

RU

OH

2S

DN

OC

ES

NIE

MIT

SD

NO

CE

SNI

EMI

T

500

600

700

800

9002 3 20 304 5 6 7 40 50 60 70 80 90 100

100

300

100.8

0.9 1

0.5

0.6

0.7 8 9

20 30 40 50 60 70 80 900.5

2 3 5 6 7 108 9

200

400

CURRENT IN MULTIPLES OF LONG DELAY SETTING I

CURRENT IN MULTIPLES OF LONG DELAY SETTING I

1000

2000

3000

4000

5000

6000

7000

8000

9000

10,0

00

0.8

0.7

0.6

0.9

1

MinimumTotalClearingTime

MaximumTotalClearingTime

AvailableLong DelayTime SettingsShown @ 6 x Ir2-24 seconds +0 ⁄-30%in 0.1 secondincrements

AvailableShort DelayPickup Settings1.5 to 8 x Ir5% in 0.1

increments

Available FlatShort Delay Time Settings0.1 to 0.5 secondsin 0.01 second increments

Available Long DelayPickup Settings (I )r0.4 to 1 x I = In rin 0.01 increments

ApplicationDeterminesEnd of Curve

.1

.5

.3

r

r

24

7

4

2

+

1.15

Digitrip OPTIM 550/1050 Circuit Breaker Time/Current Curves

(Phase Current)

Series C K-Frame Circuit Breakers

Long Delay I2T and Short Delay Flat Response

UL/CSA rms Sym . kA, 50/60 Hz

125 125 ORPK125A125 50 -125 75 -1000125 110 ORPK125A110 44 -110 66 - 880125 100 ORPK125A100 40 -100 60 - 800125 90 ORPK125A090 36 - 90 54 - 720125 70 ORPK125A070 28 - 70 42 - 560125 63 ORPK125A063 25 - 63 37.5 - 504250 250 ORPK250A250 100 - 250 150 - 2000250 225 ORPK250A225 90 - 225 135 - 1800 250 200 ORPK250A200 80 - 200 120 - 1600250 175 ORPK250A175 70 - 175 105 - 1400250 160 ORPK250A160 64 - 160 96 - 1280250 150 ORPK250A150 60 - 150 90 - 1200250 125 ORPK250A125 50 - 125 75 - 1000400 400 ORPK400A400 160 - 140 240 - 3200400 350 ORPK400A350 140 -350 210 - 2800400 300 ORPK400A300 120 - 300 180 - 2400400 250 ORPK400A250 100 - 250 150 - 2000400 225 ORPK400A225 90 - 225 135 -1800400 200 ORPK400A200 80 - 200 120 -1600

Maximum Ampere Rating

KD, CKD 65 35 25HKD, CHKD 100 65 35KDC 200 100 50

240V 480V 600VBreaker Type

Available Rating Plugs

1 For field testing primary injection methods, follow NEMA AB4 guidelines .

2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .

3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

5 This curve is shown as a multiple of the Long Delay Pick-up Setting, (Ir) . This Ir setting is programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer, or a Remote PC (IMPACC System) .

6 The Long Delay Pick-up Point (indicated by a flashing LED on the product) nominally occurs above 115% of the Ir current, with a +/- 5% tolerance . The short delay settings have conventional 100%, +/- 5% as the pickup points .

7 For additional curve tolerances contact Eaton .

8 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .

Rating Plug Catalog Number

Long DelayPickup (Ir) Range0 .4 to 1 x InAmperes

Short DelayPickup Range1 .5 to 8 x IrAmperes

Figure 18 . Digitrip Optim Long Delay I2T and Short Delay Flat Response - Curve Number SC-6925-98, May 1998

Interrupting Rating

23

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Proof 9 — November 12, 2015 4:54 PM

Rating Plug Ampere Rating(In)

Page 24: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

.01 .01

10,000

5,000

3,000

2,000

1,000

500

300

200

100

50

30

20

10

5

3

2

1 11

.5 .5.5

.3 .3.3

.2 .2.2

.1 .1.1

.05 .05

.03 .03

.02 .02

ET

UNI

M 1

RU

OH

1S

RU

OH

2S

DN

OC

ES

NIE

MIT

SD

NO

CE

SNI

EMI

T

500

600

700

800

9002 3 20 304 5 6 7 40 50 60 70 80 90 100

100

300

100.8

0.9 1

0.5

0.6

0.7 8 9

20 30 40 50 60 70 80 900.5

2 3 5 6 7 108 9

200

400

CURRENT IN MULTIPLES OF LONG DELAY SETTING I

CURRENT IN MULTIPLES OF LONG DELAY SETTING I

1000

2000

3000

4000

5000

6000

7000

8000

9000

10,0

00

0.8

0.7

0.6

0.9

1

ApplicationDeterminesEnd of Curve

MinimumTotalClearingTime

MaximumTotalClearingTime

AvailableLong DelayTime SettingsShown @ 6 x I r1-5 seconds +10 ⁄-40%in 0.1 secondincrements

AvailableShort DelayPickup Settings1.5 to 8 x Ir5% in 0.1

increments

Available FlatShort Delay Time Settings0.1 to 0.5 secondsin 0.01 second increments

Available Long DelayPickup Settings (I )r0.4 to 1 x I = In rin 0.01 increments

5

1

.5

.1

r

r

+

1.15

1.58

Digitrip OPTIM 550/1050 Circuit Breaker Time/Current Curves

(Phase Current)

Series C K-Frame Circuit Breakers

Long Delay I4T and Short Delay Flat Response

Notes:

1 For field testing primary injection methods, follow NEMA AB4 guidelines .

2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .

3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

5 This curve is shown as a multiple of the Long Delay Pick-up Setting, (Ir) . This Ir setting is programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer, or a Remote PC (IMPACC System) .

6 The Long Delay Pick-up Point (indicated by a flashing LED on the product) nominally occurs above 115% of the Ir current, with a +/- 5% tolerance . The short delay settings have conventional 100%, +/- 5% as the pickup points .

7 For additional curve tolerances contact Eaton .

8 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .

Figure 19 . Digitrip Optim Long Delay I4T and Short Delay Flat Response - Curve Number SC-6926-98, May 1998

125 125 ORPK125A125 50 -125 75 -1000125 110 ORPK125A110 44 -110 66 - 880125 100 ORPK125A100 40 -100 60 - 800125 90 ORPK125A090 36 - 90 54 - 720125 70 ORPK125A070 28 - 70 42 - 560125 63 ORPK125A063 25 - 63 37.5 - 504250 250 ORPK250A250 100 - 250 150 - 2000250 225 ORPK250A225 90 - 225 135 - 1800 250 200 ORPK250A200 80 - 200 120 - 1600250 175 ORPK250A175 70 - 175 105 - 1400250 160 ORPK250A160 64 - 160 96 - 1280250 150 ORPK250A150 60 - 150 90 - 1200250 125 ORPK250A125 50 - 125 75 - 1000400 400 ORPK400A400 160 - 140 240 - 3200400 350 ORPK400A350 140 -350 210 - 2800400 300 ORPK400A300 120 - 300 180 - 2400400 250 ORPK400A250 100 - 250 150 - 2000400 225 ORPK400A225 90 - 225 135 -1800400 200 ORPK400A200 80 - 200 120 -1600

Maximum Ampere Rating

Available Rating Plugs

Rating Plug Catalog Number

Long DelayPickup (Ir) Range0 .4 to 1 x InAmperes

Short DelayPickup Range1 .5 to 8 x IrAmperes

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD 65 35 25HKD, CHKD 100 65 35KDC 200 100 50

240V 480V 600VBreaker Type

Interrupting Rating

24

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Proof 9 — November 12, 2015 4:54 PMProof 9 — November 12, 2015 4:54 PM

Rating Plug Ampere Rating(In)

Page 25: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

.01

10,000

5,000

3,000

2,000

1,000

500

300

200

100

50

30

20

10

5

3

2

.5

.3

.2

.1

.05

.03

.02

ET

UNI

M 1

RU

OH

1S

RU

OH

2S

DN

OC

ES

NIE

MIT

1

100

20 30 40 50 60 70 80 902 3 4 5 6 7 108 91

2 3 20 304 5 6 7 40 50 60 70 80 90 100

108 91

.01

.5

.3

.2

.1

.05

.03

.02

1

0002200 0003300

4000

400 0005500 0006600 0007700

800

8000

900

9080

0001100

CURRENT IN MULTIPLES OF PLUG RATING I

CURRENT IN MULTIPLES OF PLUG RATING I AMPERES

Available Flat ResponseShort Delay Time Settings0.1 to 0.5 secondsin 0.01 second increments

FixedInstantaneousOverride1500A (+/- 15%)

Available InstantaneousPickup Settings2 to 8 x In 10%In 0.1 Increments

ApplicationDeterminesEnd of Curve

.3

.1

.5

n

n

2 8 +

Digitrip OPTIM 550/1050 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

INSTANTANEOUS AND OVERRIDE 125A Trip Unit

Notes:

1 For field testing primary injection methods, follow NEMA AB4 guidelines .

2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .

3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

5 The instantaneous pick up settings are +/- 10% .

6 For additional curve tolerances contact Eaton .

7 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .

8 Fixed Instantaneous Override =1500A +/- 15% .

125 125 ORPK125A125 250 -1000 1275 -1725125 110 ORPK125A110 220 -880 1275 -1725125 100 ORPK125A100 200 -800 1275 -1725125 90 ORPK125A090 180 - 720 1275 -1725125 70 ORPK125A070 140 - 560 1275 -1725

Maximum Ampere Rating

Available Rating Plugs

Rating Plug Catalog Number

Long DelayPickup (Ir) Range2 to 8 x InAmperes

OverrideAmperes

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD 65 35 25HKD, CHKD 100 65 35KDC 200 100 50

240V 480V 600VBreaker Type

Figure 20 . Digitrip Optim Instantaneous and Override, 125A Trip Unit - Curve Number SC-6927-98, May 1998

Interrupting Rating

25

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Rating Plug Ampere Rating(In)

Page 26: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

.01

10,000

5,000

3,000

2,000

1,000

500

300

200

100

50

30

20

10

5

3

2

.5

.3

.2

.1

.05

.03

.02

ET

UNI

M 1

RU

OH

1S

RU

OH

2S

DN

OC

ES

NIE

MIT

1

001

02 30 40 05 06 07 08 092 3 4 5 6 7 108 91

2 3 02 304 5 6 7 40 05 06 07 08 09001108 91

.01

.5

.3

.2

.1

.05

.03

.02

1

002

0002

0003

003

0004

004

0005

005

0006

006

0007

007

0008

008009

0009

0001

000,01

CURRENT IN MULTIPLES OF PLUG RATING I

CURRENT IN MULTIPLES OF PLUG RATING I AMPERES

Available Flat ResponseShort Delay Time Settings.1 to .5 secondsin .01 second increments

FixedInstantaneousOverride 3000A

Available InstantaneousPickup Settings2 to 8 x In 10%In 0.1 Increments

ApplicationDeterminesEnd of Curve

n

n

.3

.1

.5

2 8 +-

Digitrip OPTIM 550/1050 Circuit Breaker Time/Current Curves

(Phase Current)

Series C K-Frame Circuit Breakers

INSTANTANEOUS AND OVERRIDE, 250A Trip Unit

Notes:

1 For field testing primary injection methods, follow NEMA AB4 guidelines .

2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .

3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

5 The instantaneous pickup settings are +/- 10% .

6 For additional curve tolerances contact Eaton .

7 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .

8 F ixed Instantaneous Override =3000A +/- 15% .

250 250 ORPK250A250 500 - 2000 2550 - 3450250 225 ORPK250A225 450 - 1800 2550 - 3450 250 200 ORPK250A200 400 - 1600 2550 - 3450250 175 ORPK250A175 350 - 1400 2550 - 3450250 160 ORPK250A160 320 - 1280 2550 - 3450250 150 ORPK250A150 300 - 1200 2550 - 3450250 125 ORPK250A125 250 - 1000 2550 - 3450

Maximum Ampere Rating

Available Rating Plugs

Rating Plug Catalog Number

Long DelayPickup (Ir) Range2 to 8 x InAmperes

OverrideAmperes

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD 65 35 25HKD, CHKD 100 65 35KDC 200 100 50

240V 480V 600VBreaker Type

Interrupting Rating

Figure 21 . Digitrip Optim Instantaneous and Override, 250A Trip Unit - Curve Number SC-6928-98, May 1998

26

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Rating Plug Ampere Rating(In)

Page 27: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

.01

10,000

5,000

3,000

2,000

1,000

500

300

200

100

50

30

20

10

5

3

2

.5

.3

.2

.1

.05

.03

.02

ET

UNI

M 1

RU

OH

1S

RU

OH

2S

DN

OC

ES

NIE

MIT

1

001

02 30 40 05 06 07 08 092 3 4 5 6 7 108 91

2 3 02 304 5 6 7 40 05 06 07 08 09001108 91

.01

.5

.3

.2

.1

.05

.03

.02

1

002

0002

0003

003

0004

004

0005

005

0006

006

0007

007

0008

008009

0009

0001

000,01

CURRENT IN MULTIPLES OF PLUG RATING I

CURRENT IN MULTIPLES OF PLUG RATING I AMPERES

Available Flat ResponseShort Delay Time Settings.1 to .5 secondsin .01 second increments

FixedInstantaneousOverride 3000A

Available InstantaneousPickup Settings2 to 8 x In 10%In 0.1 Increments

ApplicationDeterminesEnd of Curve

n

n

.3

.1

.5

2 8 +-

.01

10,000

5,000

3,000

2,000

1,000

500

300

200

100

50

30

20

10

5

3

2

.5

.3

.2

.1

.05

.03

.02

ET

UNI

M 1

RU

OH

1S

RU

OH

2S

DN

OC

ES

NIE

MIT

1

001

02 03 40 50 06 70 08 092 3 4 5 6 7 108 91

2 3 02 034 5 6 7 40 50 06 70 08 09001108 91

.01

.5

.3

.2

.1

.05

.03

.02

1

0002

00002

0003

003

0004

004

0005

005

0006

006

0007

007

0008

008009

0009

0001

00001

CURRENT IN MULTIPLES OF PLUG RATING I

CURRENT IN MULTIPLES PLUG RATING I AMPERES

Available Flat ResponseShort Delay Time Settings0.1 to 0.5 secondsin 0.01 second increments

FixedInstantaneousOverride 4800A

Available InstantaneousPickup Settings2 to 8 x In +10%In 0.1 Increments

ApplicationDeterminesEnd of Curve

n

n

.3

.1

.5

2 8

Figure 22 . Digitrip Optim Instantaneous and Override, 400A Trip Unit - Curve Number SC-6929-98, May 1998

Digitrip OPTIM 550/1050 Circuit Breaker Time/Current Curves

(Phase Current)

Series C K-Frame Circuit Breakers

INSTANTANEOUS AND OVERRIDE, 400A Trip Unit

Notes:

1 For field testing primary injection methods, follow NEMA AB4 guidelines .

2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .

3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

5 The instantaneous pickup settings are +/- 10% .

6 For additional curve tolerances contact Eaton .

7 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .

8 Fixed Instantaneous Override =4800A +/- 15% .

Maximum Ampere Rating

Available Rating Plugs

Rating Plug Catalog Number

Long DelayPickup (Ir) Range2 to 8 x InAmperes

OverrideAmperes

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD 65 35 25HKD, CHKD 100 65 35KDC 200 100 50

240V 480V 600VBreaker Type

Interrupting Rating

400 400 ORPK400A400 800 - 3200 4080 - 5520400 350 ORPK400A350 700 -2800 4080 - 5520400 300 ORPK400A300 600 - 2400 4080 - 5520400 250 ORPK400A250 500 - 2000 4080 - 5520400 225 ORPK400A225 450 - 1800 4080 - 5520400 200 ORPK400A200 400 - 1600 4080 - 5520

27

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Rating Plug Ampere Rating(In)

Page 28: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

.01

10,000

5,000

3,000

2,000

1,000

500

300

200

100

50

30

20

10

5

3

2

.5

.3

.2

.1

.05

.03

.02

ET

UNI

M 1

RU

OH

1S

RU

OH

2S

DN

OC

ES

NIE

MIT

1

CURRENT IN MULTIPLES OF CURRENT SENSOR FRAME RATING I

.01

.5

.3

.2

.1

.05

.03

.02

1

.1.1

.2.2

.3.3

.4.4

.5.5

.6.6

.7.7

.8.8

.9.9

11

22

33

44

55

66

77

88

99

1010

.2 .3 .4 .5 .6 .7 .8 .9 1 2 3 4 5 6 7 8 9 10

Available Ground FaultPickup Settings0.2 to 1.0 x Current SensorFrame Rating I + 10%s

in 0.1 increments

1.01.01.0.5.2

Available Flat ResponseGround Fault Time Settings0.1 to 0.5 secondsin 0.01 second increments

.5

.3

.1

Flat Shape forGround FaultTime Settings

I t Slope forGround FaultTime Settings

2

Availaible I t ResponseGround Fault Time Settings0.1 to 0.5 secondsin 0.01 second increments

2

s

1.0

.5

.5

.3

.1

.2

CURRENT IN MULTIPLES OF CURRENT SENSOR FRAME RATING I s

Digitrip OPTIM Circuit Breaker Time/Current Curves (Ground Current)

Series C K-Frame Circuit Breakers

GROUND FAULT TRIP OR GROUND FAULT ALARM ONLY

Notes:

1 For field testing primary injection methods, follow NEMA AB4 guidelines .

2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .

3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

5 The ground fault pickup settings are +/- 10% .

6 For additional curve tolerances contact Eaton .

7 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .

125 25 - 125250 50 - 250400 80 - 400

Maximum Ampere Rating

Available Ground Fault RangesGround FaultPickup Range0 .2 to 1 .0 x Is (Current Sensor Frame Rating)Amperes

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD 65 35 25HKD, CHKD 100 65 35KDC 200 100 50

240V 480V 600VBreaker Type

Interrupting Rating

Figure 23 . Digitrip Optim Ground Fault Trip or Ground Fault Alarm Only - Curve Number SC-6930-98, May 1998

100

10

5

1

0.5

0.1

0.05

0.01

0.005

0.0010.5 1 1.5 2 3 4 5 10

TimeDelaySetting

(s)

INST

0.15

0.2

0.5

1.0

2.0

EARTH LEAKAGE CURRENT IN MULTIPLES OF I n

AVAILABLE PICKUP SETTINGS - 0.03 4 , 0.1, 0.3, 0.5, 1, 3, 10, 30A.

TIME (s)

1 min

Ambient Temp. (250C)

28

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Page 29: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

100

10

5

1

0.5

0.1

0.05

0.01

0.005

0.0010.5 1 1.5 2 3 4 5 10

TimeDelaySetting

(s)

INST

0.15

0.2

0.5

1.0

2.0

EARTH LEAKAGE CURRENT IN MULTIPLES OF I n

AVAILABLE PICKUP SETTINGS - 0.03 4 , 0.1, 0.3, 0.5, 1, 3, 10, 30A.

TIME (s)

1 min

Ambient Temp. (250C)

Figure 24 . UL Series C K-Frame Circuit breaker Earth Leakage Module, 110-480V - Curve Number TC01212005E, March 2003

Circuit Breaker Time/Current Curves

Earth Leakage Circuit Breaker - UL

1 . ELFD, JD, and KD earth leakage module 3 and 4 pole . 110 - 480V 60hz .

2 . For application and coordination purposes only . -20C to 50C ambient .

3 . Total clearing times include the response time of the earth leakage module, opening time of the breaker, and interruption of current .

4 . Pickup setting of .03A only available with instantaneous time delay .

*Curves do not apply to single phase applications .

– Legacy Product –

29

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Page 30: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

100

10

5

1

0.5

0.1

0.05

0.01

0.005

0.0010.5 1 1.5 2 3 4 5 10

Time DelaySetting

(s)

INST

0.06

0.1

0.25

0.5

1.0

TIME (s)

1 min

EARTH LEAKAGE CURRENT IN MULTIPLES OF I n

Ambient Temp. (250C)

AVAILABLE PICKUP SETTINGS - 0.03 4 , 0.1, 0.3, 0.5, 1, 3, 10, 30A.

Figure 25 . IEC Series C K-Frame Circuit breaker Earth Leakage Module, 110-480V - Curve Number TC01212006E, March 2003

Circuit Breaker Time/Current Curves

Earth Leakage Circuit Breaker - IEC

1 . ELFD, JD, and KD earth leakage module 3 and 4 pole . *110 - 480V 50hz .

2 . For application and coordination purposes only . -20C to 50C ambient .

3 . Total clearing times include the response time of the earth leakage module, opening time of the breaker, and interruption of current .

4 . Pickup setting of .03A only available with instantaneous time delay .

*Curves do not apply to single phase applications .

– Legacy Product –

30

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Page 31: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

31

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

2X

Long Delay Minimum TotalClearing Time

Long Delay Maximum TotalClearing Time

Short DelayPickupSettings(Tolerance±10%)

5X

3X

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9.7 .9

Fixed InstantaneousOverride 4000A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

SECO

NDS

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

.02

.03

.04

.05

1.15

Standard Fixed%021 - %011 gulP gnitaR

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3400LS, KES3400LSG Digitrip RMS 310 Trip Units for use with CircuitBreaker Types KDB, CKDB, HKDB, CHKDB, KD, HKD, CKD, and CHKD, 400A . max .

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6

TEST

Fixed Short Delay Time Typical Trip Unit Nameplate

400 Fixed 4KES 400T 800 - 3200350 Fixed 4KES 350T 700 - 2800300 Fixed 4KES 300T 600 - 2400250 Fixed 4KES 250T 500 - 2000225 Fixed 4KES 225T 450 - 1800200 Fixed 4KES 200T 400 - 1600200, 250, 300, 400 Adjustable A4KES 400T1 400 - 3200250, 300, 350, 400 Adjustable A4KES 400T3 500 - 3200

Ampere Rating(In)

Available Rating Plugs

TypeCatalogNumber

Short DelayPickup RangeAmperes

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 35 25HKD, CHKD, HKDB, CHKDB 100 65 35

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 40 40HKD, CHKD, HKDB, CHKDB 100 65 65

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

Figure 26 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units,Types KES3400LS, KES3400LSG

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 32: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

32

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

3X

2XStandard Fixed

%021 - %011 gulP gnitaR

200 ms

100 ms

300 ms

5X

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5 201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9

Short DelayPickupSettings(Tolerance±10%)

Long Delay Maximum TotalClearing Total

.7 .9

Fixed InstantaneousOverride 4000A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

SECO

NDS

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

1

.02

.03

.04

.05

.2

.3

.4

.5

Long Delay Minimum TotalClearing Time

I

1.15

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3400LSI, KES3400LSIG Digitrip RMS 310 Units for use with CircuitBreaker Types KD, HKD, CKD, and CHKD, 400A . max .

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6

TEST

Fixed Short Delay Time Typical Trip Unit Nameplate

400 Fixed 4KES 400T 800 - 3200350 Fixed 4KES 350T 700 - 2800300 Fixed 4KES 300T 600 - 2400250 Fixed 4KES 250T 500 - 2000225 Fixed 4KES 225T 450 - 1800200 Fixed 4KES 200T 400 - 1600200, 250, 300, 400 Adjustable A4KES 400T1 400 - 3200250, 300, 350, 400 Adjustable A4KES 400T3 500 - 3200

Ampere Rating(In)

Available Rating Plugs

TypeCatalogNumber

Short DelayPickup RangeAmperes

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD 65 35 25HKD, CHKD 100 65 35

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KD, CKD 65 40 40HKD, CHKD 100 65 65

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

Figure 27 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units,Types KES3400LSI, KES3400LSIG

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 33: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

33

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

2X

Long Delay Minimum TotalClearing Time

Long Delay Maximum TotalClearing Time

Short DelayPickupSettings(Tolerance±10%)

5X

3X

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9.7 .9

CURRENT IN AMPS

.02

.03

.04

.05Fixed InstantaneousOverride 4000A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

SECO

NDS

30,0

00

40,0

00

50,0

00

100,

000

1.15

Standard Fixed%021 - %011 gulP gnitaR

Figure 28 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units,Types KES3250LS, KES3250LSG

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3250LS, KES3250LSG Digitrip RMS 310 Units for use with CircuitBreaker Types KDB, CKDB, HKDB, CHKDB, KD, HKD, CKD, and CHKD, 250A . max .

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6

TEST

Fixed Short Delay Time Typical Trip Unit Nameplate

Available Rating Plugs

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 35 25HKD, CHKD, HKDB, CHKDB 100 65 35

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 40 40HKD, CHKD, HKDB, CHKDB 100 65 65

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

250 Fixed 2KES 250T 250 - 1000225 Fixed 2KES 225T 220 - 880200 Fixed 2KES 200T 200 - 800175 Fixed 2KES 175T 180 - 720150 Fixed 2KES 150T 140 - 560125 Fixed 2KES 125T 250 - 1000125, 150, 200, 250 Adjustable A2KES 250T1 250 - 2000

Ampere Rating(In) Type

CatalogNumber

Short DelayPickup RangeAmperes

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 34: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

34

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

3X

2X

200 ms

100 ms

I

300 ms

5X

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5 201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9

Short DelayPickupSettings(Tolerance±10%)

Long Delay Minimum TotalClearing Time

Long Delay Maximum TotalClearing Time

.7 .9

.02

.03

.04

.05Fixed InstantaneousOverride 4000A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

SECO

NDS

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

1

1.15

Standard Fixed%021 - %011 gulP gnitaR

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3250LSI, KES3250LSIG Digitrip RMS 310 Units for use with CircuitBreaker Types KDB, CKDB, HKDB, CHKDB, KD, HKD, CKD, and CHKD, 250A . max .

TEST

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir Time • ms

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6300

100

INST

200

Adjustable Short Delay Time Typical Trip Unit Nameplate

Available Rating Plugs

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 35 25HKD, CHKD, HKDB, CHKDB 100 65 35

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 40 40HKD, CHKD, HKDB, CHKDB 100 65 65

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No .STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

250 Fixed 2KES 250T 500 - 2000225 Fixed 2KES 225T 450 - 1800200 Fixed 2KES 200T 400 - 1600175 Fixed 2KES 175T 350 - 1400150 Fixed 2KES 150T 300 - 1200125 Fixed 2KES 125T 250 - 1000125, 150, 200, 250 Adjustable A2KES 250T1 250 - 2000

Ampere Rating(In) Type

CatalogNumber

Short DelayPickup RangeAmperes

Figure 29 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units,Types KES3250LSI, KES3250LSIG

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 35: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

35

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

2X

Long Delay Minimum TotalClearing Time

Long Delay Maximum TotalClearing Time

Short DelayPickupSettings(Tolerance ±10%)

5X

3X

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9.7 .9

.02

.03

.04

.05

Fixed InstantaneousOverride 3000A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

SECO

NDS

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

1.15

Standard Fixed%021 - %011 gulP gnitaR

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3125LS, KES3125LSG Digitrip RMS 310 Trip Units for use with CircuitBreaker Types: KDB, HKDB, CKDB, CHKDB, KD, HKD, CKD, and CHKD, 125A . max .

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6

TEST

Fixed Short Delay Time Typical Trip Unit Nameplate

125 Fixed 1KES 125T 250 - 1000110 Fixed 1KES 110T 220 - 880100 Fixed 1KES 100T 200 - 80090 Fixed 1KES 90T 180 - 72070 Fixed 1KES 70T 140 - 56070, 90, 100, 125 Adjustable A1KES 125T1 140- 1000

Ampere Rating(In)

Available Rating Plugs

TypeCatalogNumber

Short DelayPickup RangeAmperes

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 35 25HKD, CHKD, HKDB, CHKDB 100 65 35

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 40 40HKD, CHKD, HKDB, CHKDB 100 65 65KDC 200 100 50

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 3000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

Figure 30 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units,Types KES3125LS, KES3125LSG

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 36: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

36

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

3X

2X

200 ms

100 ms

I

300 ms

5X

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5 201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9

Short DelayPickupSettings(Tolerance±10%)

Long Delay Minimum TotalClearing Time

Long Delay Maximum TotalClearing Time

.7 .9

.02

.03

.04

.05

Fixed InstantaneousOverride 3000A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

SECO

NDS

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

1.15

Standard Fixed%021 - %011 gulP gnitaR

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3125LSI, KES3125LSIG Digitrip RMS 310 Trip Units for use with CircuitBreaker Types KDB, CKDB, HKDB, CHKDB, KD, HKD, CKD, and CHKD, 125A . max .

TEST

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir Time • ms

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6300

100

INST

200

Adjustable Short Delay Time Typical Trip Unit Nameplate

125 Fixed 1KES 125T 250 - 1000110 Fixed 1KES 110T 220 - 880100 Fixed 1KES 100T 200 - 80090 Fixed 1KES 90T 180 - 72070 Fixed 1KES 70T 140 - 56070, 90, 100, 125 Adjustable A1KES 125T1 140- 1000

Ampere Rating(In)

Available Rating Plugs

TypeCatalogNumber

Short DelayPickup RangeAmperes

UL/CSA rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 35 25HKD, CHKD, HKDB, CHKDB 100 65 35

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KD, CKD, KDB, CKDB 65 40 40HKD, CHKD, HKDB, CHKDB 100 65 65

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No .STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 3000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

Figure 31 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3125L-SI, KES3125LSIG

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 37: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

37

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

2X

Long Delay Minimum TotalClearing Time

Long Delay Maximum TotalClearing Time

Short DelayPickupSettings(Tolerance ±10%)

5X

3X

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9.7 .9

InterruptingRatingDeterminesEnd ofCurve

.02

.03

.04

.05

SECO

NDS

Fixed InstantaneousOverride 4000A

MaximumInterruptingTime

600 Vac

480 Vac

240 Vac

10,0

00

.1

.01

5000

4000

3000

2000

20,0

00

.001

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

200,

000

1.15

Standard Fixed%021 - %011 gulP gnitaR

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3400LS, KES3400LSG Digitrip RMS 310 Trip Units for use with CircuitBreaker Type KDC, 400A . max .

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6

TEST

Fixed Short Delay Time Typical Trip Unit Nameplate

Available Rating Plugs

UL/CSA rms Sym . kA, 50/60 Hz

KDC 200 100 50

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KDC 200 100 100

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No .STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

400 Fixed 4KES 400T 800 - 3200350 Fixed 4KES 350T 700 - 2800300 Fixed 4KES 300T 600 - 2400250 Fixed 4KES 250T 500 - 2000225 Fixed 4KES 225T 450 - 1800200 Fixed 4KES 200T 400 - 1600200, 250, 300, 400 Adjustable A4KES 400T1 400 - 3200200, 250, 300, 400 Adjustable A4KES 400T3 500 - 3200

Ampere Rating(In) Type

CatalogNumber

Short DelayPickup RangeAmperes

Figure 32 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3400LS, KES3400LSG

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 38: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

38

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

3X

2X

200 ms

100 ms

300 ms

5X

me.02

.03

.04

.05Fixed InstantaneousOverride 4000A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

5000

4000

3000

2000

20,0

00

.001

SECO

NDS

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

1

200,

000

600 Vac

480 Vac

240 Vac

MaximumInterruptingTime

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5 201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9

Short DelayPickupSettings(Tolerance±10%)

Long Delay Minimum TotalClearing Time

Long Delay Maximum TotalClearing Time

.7 .9

I

1.15

Standard Fixed%021 - %011 gulP gnitaR

Figure 33 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3400LSI, KES3400LSIG

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3400LSI, KES3400LSIG, Digitrip RMS 310 Trip Units for use withCircuit Breaker Type KDC, 400A . max .

TEST

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir Time • ms

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6300

100

INST

200

Adjustable Short Delay Time Typical Trip Unit Nameplate

Available Rating Plugs

UL/CSA rms Sym . kA, 50/60 Hz

KDC 200 100 50

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KDC 200 100 100

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No .STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

400 Fixed 4KES 400T 800 - 3200350 Fixed 4KES 350T 700 - 2800300 Fixed 4KES 300T 600 - 2400250 Fixed 4KES 250T 500 - 2000225 Fixed 4KES 225T 450 - 1800200 Fixed 4KES 200T 400 - 1600200, 250, 300, 400 Adjustable A4KES 400T1 400 - 3200200, 250, 300, 400 Adjustable A4KES 400T3 500 - 3200

Ampere Rating(In) Type

CatalogNumber

Short DelayPickup RangeAmperes

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 39: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

39

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

2X

Long Delay Minimum TotalClearing Time

Long Delay Maximum TotalClearing Time

Short DelayPickupSettings(Tolerance ±10%)

5X

3X

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9.7 .9

Fixed InstantaneousOverride 4000A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

5000

4000

3000

2000

20,0

00

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

200,

000

600 Vac

480 Vac

240 Vac

.02

.03

.04

.05

SECO

NDS

.001

1.15

Standard Fixed%021 - %011 gulP gnitaR

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3250LS, KES3250LSG Digitrip RMS 310 Units for use with CircuitBreaker Type KDC, 250A . max .

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6

TEST

Fixed Short Delay Time Typical Trip Unit Nameplate

Available Rating Plugs

UL/CSA rms Sym . kA, 50/60 Hz

KDC 65 35 25

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KDC 200 100 100

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

250 Fixed 2KES 250T 250 - 1000225 Fixed 2KES 225T 220 - 880200 Fixed 2KES 200T 200 - 800175 Fixed 2KES 175T 180 - 720150 Fixed 2KES 150T 140 - 560125 Fixed 2KES 125T 250 - 1000125, 150, 200, 250 Adjustable A2KES 250T1 250 - 2000

Ampere Rating(In) Type

CatalogNumber

Short DelayPickup RangeAmperes

Figure 34 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3250LS, KES3250LSG

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 40: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

40

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

3X

2X

200 ms

100 ms

300 ms

5X

.02

.03

.04

.05Fixed InstantaneousOverride 4000A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

5000

4000

3000

2000

20,0

00

.001

SECO

NDS

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

1

200,

000

600 Vac

480 Vac

240 Vac

MaximumInterruptingTime

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5 201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9

Short DelayPickupSettings(Tolerance±10%)

Long Delay Minimum TotalClearing Time

Long Delay Maximum TotalClearing Time

.7 .9

I

1.15

Standard Fixed%021 - %011 gulP gnitaR

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3250LSI, KES3250LSIG Digitrip RMS 310 Trip Units for use withCircuit Breaker Type KDC, 250A . max .

TEST

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir Time • ms

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6300

100

INST

200

Adjustable Short Delay Time Typical Trip Unit Nameplate

Available Rating Plugs

UL/CSA rms Sym . kA, 50/60 Hz

KDC 200 100 50

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KDC 200 100 100

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

250 Fixed 2KES 250T 500 - 2000225 Fixed 2KES 225T 450 - 1800200 Fixed 2KES 200T 400 - 1600175 Fixed 2KES 175T 350 - 1400150 Fixed 2KES 150T 300 - 1200125 Fixed 2KES 125T 250 - 1000125, 150, 200, 250 Adjustable A2KES 250T1 250 - 1000

Ampere Rating(In) Type

CatalogNumber

Short DelayPickup RangeAmperes

Figure 35 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3250LSI, KES3250LSIG

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 41: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

41

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

2X

Long Delay Minimum TotalClearing Time

Long Delay Maximum TotalClearing Time

Short DelayPickupSettings(Tolerance ±10%)

5X

3X

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9.7 .9

Fixed InstantaneousOverride 3000A Interrupting

RatingDeterminesEnd ofCurve

10,0

00

.1

.01

5000

4000

3000

2000

20,0

00

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

200,

000

600 Vac

480 Vac

240 Vac

.02

.03

.04

.05

SECO

NDS

.001

1.15

Standard Fixed%021 - %011 gulP gnitaR

Figure 26 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3125LS, KES3125LSG

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3125LS, KES3125LSG Digitrip RMS 310 Trip Units for use with CircuitBreaker Types KDC, 125A . max .

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6

TEST

Fixed Short Delay Time Typical Trip Unit Nameplate

125 Fixed 1KES 125T 250 - 1000110 Fixed 1KES 110T 220 - 880100 Fixed 1KES 100T 200 - 80090 Fixed 1KES 90T 180 - 72070 Fixed 1KES 70T 140 - 56070, 90, 100, 125 Adjustable A1KES 125T1 140- 1000

Ampere Rating(In)

Available Rating Plugs

TypeCatalogNumber

Short DelayPickup RangeAmperes

UL/CSA rms Sym . kA, 50/60 Hz

KDC 200 100 50

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KDC 200 100 100

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 3000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 42: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

42

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

6X

8X

4X

7X

3X

2X

200 ms

100 ms

I

300 ms

5X

.02

.03

.04

.05Fixed InstantaneousOverride 3000A

InterruptingRatingDeterminesEnd ofCurve

10,0

00

.1

.01

5000

4000

3000

2000

20,0

00

.001

SECO

NDS

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

1

200,

000

600 Vac

480 Vac

240 Vac

MaximumInterruptingTime

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.5

.5 201054321.8.6

1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

2010543 62 7 8 9

Short DelayPickupSettings(Tolerance±10%)

Long Delay Minimum TotalClearing Time

Long Delay Maximum TotalClearing Time

.7 .9

1.15

Standard Fixed%021 - %011 gulP gnitaR

Digitrip 310 Circuit Breaker Time/Current Curves (Phase Current)

Series C K-Frame Circuit Breakers

Catalog Types: KES3125LSI, KES3125LSIG Digitrip RMS 310 Trip Units for use with CircuitBreaker Type KDC, 125A . max .

TEST

Short Delay

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to TripPickup • x Ir Time • ms

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6300

100

INST

200

Adjustable Short Delay Time Typical Trip Unit Nameplate

125 Fixed 1KES 125T 250 - 1000110 Fixed 1KES 110T 220 - 880100 Fixed 1KES 100T 200 - 80090 Fixed 1KES 90T 180 - 72070 Fixed 1KES 70T 140 - 56070, 90, 100, 125 Adjustable A1KES 125T1 140- 1000

Ampere Rating(In)

Available Rating Plugs

TypeCatalogNumber

Short DelayPickup RangeAmperes

UL/CSA rms Sym . kA, 50/60 Hz

KDC 200 100 50

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KDC 200 100 100

240V 380V 415VBreaker Type

Interrupting Rating

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 3000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long Delay Pickup is 115% of In, +/- 5% .

Figure 37 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3125LSI, KES3125LSIG

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 43: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

43

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Ground Fault Pickup Settings(Tolerance ±10% Except ±20% on 1xIG Setting)

3xI G

1

4xI G

2xI G

1xI G

2 3 4 5 6 7 8 9 10 100

GROUND CURRENT-AMPERES

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

8000

GROUND CURRENT-IN MULTIPLES OF Ig = 80A

800

480

400

320

240

160

80 560

640

720

5xI G

500 ms

300 ms

150 ms

I

Digitrip 310 Circuit Breaker Time/Current Curves (Ground Current)

Series C K-Frame Circuit Breakers

Catalog Types: Type Digitrip RMS 310 Trip Unit for use with Circuit Breaker Types KDB,

CKDB, HKDB, CHKDB, KD, HKD, KDC, CKD, and CHKD

For use with Trip Unit Catalog NumbersKES3400LSGKES3400LSIG

TESTEngaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to Trip

Digitrip RMS 310 Trip Unit40oC

Ground Fault

Pickup • x Ig Time • ms

Short Delay

Pickup • x Ir5

73

2 8

4 6500

150

INST

3004

2

1

3 5

Ig = 80A

Notes:

Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

TESTEngaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to Trip

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6

Short Delay

Pickup • x Ir Time • ms

Ground Fault

Pickup • x Ig Time • ms

300

100

INST

200500

150

INST

3004

2

1

3 5

Ig = 80A

Figure 38 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Ground Fault Protection(KES3400LSG, KES3400LSIG)

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 44: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

44

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Ground Fault Pickup Settings(Tolerance ±10%Except ±20% on 1xIG Setting)

3xI G

1

4xI G

2xI G

1xI G

2 3 4 5 6 7 8 910 100

GROUND CURRENT-AMPERES

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

5000

GROUND CURRENT-IN MULTIPLES OF Ig = 50A

500

300

250

200

150

100

50 350

400

450

5xI G

I

500 ms

300 ms

150 ms

Digitrip 310 Circuit Breaker Time/Current Curves (Ground Current)

Series C K-Frame Circuit Breakers

Type Digitrip RMS 310 Trip Unit for use with Circuit Breaker Types KDB, CKDB, HKDB, CHKDB

KD, HKD, KDC, CKD, and CHKD

For use with Trip Unit Catalog NumbersKES3250LSGKES3250LSIG

TESTEngaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to Trip

Digitrip RMS 310 Trip Unit40oC

Ground Fault

Pickup • x Ig Time • ms

Short Delay

Pickup • x Ir5

73

2 8

4 6500

150

INST

3004

2

1

3 5

Ig = 80A

Notes:

Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

TESTEngaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to Trip

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6

Short Delay

Pickup • x Ir Time • ms

Ground Fault

Pickup • x Ig Time • ms

300

100

INST

200500

150

INST

3004

2

1

3 5

Ig = 80A

Figure 39 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Ground Fault Protection(KES3250LSG, KES3250LSIG)

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 45: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

45

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Ground Fault Pickup Settings(Tolerance ±10% Except ±30% on 2xIG Setting)

3xI G

4xI G

1 2 3 4 5 6 7 8 9 10 100 GROUND CURRENT-IN MULTIPLES OF Ig = 25A

GROUND CURRENT-AMPERES

TIM

E IN

SEC

ONDS

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR1

MIN

UTE

2 HO

URS

500

250

150

125

100

755025 175

200

225

2xI G

5xI G

I

500 ms

300 ms150 ms

Digitrip 310 Circuit Breaker Time/Current Curves (Ground Current)

Series C K-Frame Circuit Breakers

Type Digitrip RMS 310 Trip Unit for use with Circuit Breaker Types KD, HKD, KDC, CKD,and CHKD

For use with Trip Unit Catalog NumbersKES3125LSGKES3125LSIG

TESTEngaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to Trip

Digitrip RMS 310 Trip Unit40oC

Ground Fault

Pickup • x Ir Time • ms

Short Delay

Pickup • x Ir5

73

2 8

4 6500

150

INST

3004

23 5

Ig = 25A

Notes:

Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuousampere derating for ambient above 40ºC, refer to Eaton .

Digitrip RMS 310 trip units are suitable for functional field testing with test kitCat . No . STK2 . For field testing using primary injection methods, follow NEMApublication AB-4 .

Figure 40 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Ground Fault Protection(KES3125LSG, KES3125LSIG)

TESTEngaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to Trip

Digitrip RMS 310 Trip Unit40oC

5

73

2 8

4 6

Short Delay

Pickup • x Ir Time • ms

Ground Fault

Pickup • x Ir Time • ms

300

100

INST

200500

150

INST

3004

23 5

Ig = 25A

– Legacy Product –

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .

Page 46: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

46

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

.02

.03

.04

.05

10,0

00

.1

.01

5000

4000

3000

2000

20,0

00

.001

SE

CO

ND

S

30,0

00

40,0

00

50,0

00

100,

000

200,

000

TIM

E IN

SE

CO

ND

S

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 H

OU

R1

MIN

UTE

2 H

OU

RS

.5

.5 201054321.8.6

1.8.6

.7 .9 6 7 8 9

2010543 62 7 8 9

.7 .9

Maximum TotalClearing Time

Minimum TotalClearing Time

Standard FixedRating Plug

Fixed InstantaneousOverride 4000A

Maximum InterruptingTime

600 VAC

480 VAC

240 VAC

InterruptingRatingDeterminesEnd of Curve 3

2X

3X

4X

5X

6X

7X8X

Short DelayPick UpSettings(Tolerance +10%)

Current in multiples of rating plug amperes (In)

Current in multiples of rating plug amperes (In)

Current in Amperes

Circuit Breaker Time/Current Curves (Phase Current)

Series C – Type KS Circuit Breakers

Catalog Types: KS3400T, KS3400TG, KS Trip Units for use with Circuit Breaker Type KDC, 400A . max

Short Delay

Engaged

Remove

Cat.

In Push to Trip

Pickup

Trip Unit - Cat. KS3400T - 40 C Ambiento

5

73

2 8

4 6TEST

Fixed Short Delay Time Typical Trip Unit Nameplate

400 Fixed 4KS 400T 800 - 3200350 Fixed 4KS 350T 700 - 2800300 Fixed 4KS 300T 600 - 2400250 Fixed 4KS 250T 500 - 2000225 Fixed 4KS 225T 450 - 2000200 Fixed 4KS 200T 400 - 1600200, 250, 300, 400 Adjustable A4KS 400T1 400 - 3200200, 300, 350, 400 Adjustable A4KS 400T3 500 - 3200

Ampere Rating(In)

Available Rating Plugs

TypeCatalogNumber

Short DelayPickup RangeAmperes

UL/CSA rms Sym . kA, 50/60 Hz

KDC 200 100 50

240V 480V 600VBreaker Type

IEC 60947-2 rms Sym . kA, 50/60 Hz

KDC 200 100 100

240V 380V 415VBreaker Type

Interrupting Rating

1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .

2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 KS trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .

Figure 41 . KS Electronic Trip Unit Type KDC - Curve Number SC-4156-87A,1987

– Legacy Product –

Page 47: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

47

Time Current Curves TD012034ENEffective September 2015

Series CK-Frame

EATON www.eaton.com

Page 48: Time Current Curves TD012034EN Series C K-Frame · 6 Time Current Curves TD012034EN Effective September 2015 Series C K-Frame EATON E G F H A B D C IR∑ 6 8 7 10 2 3 5 4 12 Ii Isd

Eaton1000 Eaton BoulevardCleveland, OH 44122United StatesEaton .com

© 2014 EatonAll Rights ReservedPrinted in USAPublication No . TD012034EN / KDCApril 2014

Eaton is a registered trademark .

All other trademarks are property of their respective owners .

Series CK-Frame

Time Current Curves TD012034ENEffective September 2015