Cascading technical information - Schneider · PDF fileversion: 1.1 557E4 00.indd Complementary technical information Cascading IEC 60947-2 IEC 60364 § 434.5.1 What is cascading?

�version: 1.1 557E4�00.indd

Complementary technical information

Cascading

IEC 60947-2 IEC 60364 § 434.5.1What is cascading?Cascading is the use of the current limiting capacity of circuit breakers at a given point to permit installation of lower-rated and therefore lower-cost circuit breakers downstream.The upstream Compact circuit breakers acts as a barrier against short-circuit currents. In this way, downstream circuit breakers with lower breaking capacities than the prospective short-circuit (at their point of installation) operate under their normal breaking conditions.Since the current is limited throughout the circuit controlled by the limiting circuit breaker, cascading applies to all switchgear downstream. It is not restricted to two consecutive devices.

General use of cascadingWith cascading, the devices can be installed in different switchboards. Thus, in general, cascading refers to any combination of circuit breakers where a circuit breaker with a breaking capacity less than the prospective Isc at its point of installation can be used. Of course, the breaking capacity of the upstream circuit breaker must be greater than or equal to the prospective short-circuit current at its point of installation.The combination of two circuit breakers in cascading configuration is covered by the following standards of:

design and manufacture of circuit breakers (IEC 60947-�),electrical distribution networks (IEC 60364 § 434.5.1).

Coordination between circuit breakersThe use of a protective device possessing a breaking capacity less than the prospective short-circuit current at its installation point is permitted as long as another device is installed upstream with at least the necessary breaking capacity.In this case, the characteristics of the two devices must be coordinated in such a way that the energy let through by the upstream device is not more than that which can be withstood by the downstream device and the cables protected by these devices without damage.Cascading can only be checked by laboratory tests and the possible combinations can be specified only by the circuit breaker manufacturer.

Cascading and protection discriminationIn cascading configurations, due to the Roto-active breaking technique, discrimination is maintained and, in some cases, even enhanced. Consult the enhanced discrimination tables on pages 557E4�00/�6 for data on discrimination limits.

Cascading tablesSchneider Electric cascading tables are:

drawn up on the basis of calculations (comparison between the energy limited by the upstream device and the maximum permissible thermal stress for the downstream device)

verified experimentally in accordance with IEC standard 60947-�.For distribution systems with ��0/�40 V, 400/415 V and 440 V between phases,the tables of the following pages indicate cascading possibilities between upstream Compact and downstream Multi 9 and Compact circuit breakers as well as between upstream Masterpact and downstream Compact circuit breakers.

bb

b

b

3version: 1.1 557E4�00.indd

Example of three level cascadingConsider three circuit breakers A, B and C connected in series. The criteria for cascading are fulfilled in the following two cases:

the upstream device A is coordinated for cascading with both devices B and C (even if the cascading criteria are not fulfilled between B and C). It is simply necessary to check that the combinations A + B and A + C have the required breaking capacity

each pair of successive devices is coordinated, i.e. A with B and B with C (even if the cascading criteria are not fulfilled between A and C). It is simply necessary to check that the combinations A + B and B + C have the required breaking capacity.The upstream breaker A is a NSX�50L (breaking capacity 150 kA) for a prospective lsc of 80 kA across its output terminals. A NSX100B (breaking capacity �5 kA) can be used for circuit breaker B for a prospective lsc of 40 kA across its output terminals, since the "reinforced" breaking capacity provided by cascading with the upstream NSX�50L is 50 kA. A C60H (breaking capacity 15 kA) can be used for circuit breaker C for a prospective lsc of �4 kA across its output terminals since the "reinforced" breaking capacity provided by cascading with the upstream NSX�50L is �5 kA. Note that the "reinforced" breaking capacity of the C60H with the NSX100B upstream is only �0 kA, but:

A + B = 50 kAA + C = �5 kA.

b

b

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Cascading (cont.)

220/240 V network downstream from a 380/415 V networkFor 1P + N or �P circuit breakers connected between the phase and neutral on a 380/415 V network, with a TT or TN-S neutral system, consult the ��0/�40 V cascading table to determinate cascading possibilities between upstream and downstream circuit breakers, for iC60 upstream and consult the 380/415 V cascading table for iDPN.

DB

1�06

07D

B1�

0606

DB

1�06

05D

B1�

0608

iC60H25 A

For 1P+N or �P circuit breakers connected to one phase of a 380/415 V network used together with the neutral to supply a single-phase circuit, consult the cascading tables for 380/415 V networks to determine the cascading possibilities between upstream and downstream circuit breakers.



Cascading (cont.)Contents

Downstream UpstreamType iDPN iC60 C120 NG125 NG160 NSC100 NSX100 NSX160 NSX250

220-240 ViDPN p. 6 p. 6 p. 6 p. 6 p. 6 p. 6 p. 7 p. 8 p. 9iC60 p. 6 p. 6 p. 6 p. 6 p. 6 p. 6 p. 7 p. 8 p. 9C1�0 p. 6 p. 6 p. 6 p. 6 p. 6 p. 6 p. 7 p. 8 p. 9NG1�5 - - - p. 6 p. 6 p. 6 p. 7 p. 8 p. 9NG160 - - - p. 6 p. 6 p. 6 p. 7 p. 8 p. 9NSC100 - - - - - - p. 7 p. 8 p. 9NSX100 - - - - - - p. 7 p. 8 p. 9NSX160 - - - - - - - p. 8 p. 9NSX�50 - - - - - - - - p. 9380-415 V

iDPN p. 13 p. 13 p. 13 p. 13 p. 13 p. 13 p. 14 p. 15 p. 16iC60 p. 13 p. 13 p. 13 p. 13 p. 13 p. 13 p. 14 p. 15 p. 16C1�0 p. 13 p. 13 p. 13 p. 13 p. 13 p. 13 p. 14 p. 15 p. 16NG1�5 - - - p. 13 p. 13 p. 13 p. 14 p. 15 p. 16NG160 - - - - - - p. 14 p. 15 p. 16NSC100 - - - - - - p. 14 p. 15 p. 16NSX100 - - - - - - p. 14 p. 15 p. 16NSX160 - - - - - - - p. 15 p. 16NSX�50 - - - - - - - - p. 16440 V

iC60 - - - - - - p. �1 p. �1 -NG160 - - - - - - p. �1 p. �1 p. ��NSC100 - - - - - - p. �1 p. �1 p. ��NSX100 - - - - - - p. �1 p. �1 p. ��NSX160 - - - - - - - p. �1 p. ��NSX�50 - - - - - - - - p. ��

Cascading and enhanced discriminationDownstream UpstreamType NG160 NSX100 NSX160 NSX250220-240 V

iC60 - p. �8 p. �7-�8 p. �7-�9C1�0 - - p. �7 p. �7-�9NG1�5 - - p. �7 p. �7-�9NG160 - - - p. 30NSC100 - - - p. 30NSX100 - - - p. 30380-415 V

iC60 p. 3� p. 34 p. 33-34 p. 33-35C1�0 - - p. 33 p. 33-35NG1�5 - - p. 33 p. 33-35NG160 - - - p. 35-37NSC100 - - - p. 35-37NSX100 - - - p. 35-37440 V

NSX100 - - - p. 39


Downstream UpstreamType NSX400 NSX630 NS630 NS800 NS1000 NS1250 NS2000 Masterpact

NS630b NS1600 NS2500N H/L N H NS3200

220-240 VNG160 p. 10 p. 11 - - - - - - - -NSC100 p. 10 p. 11 - - - - - - - -NSX100 p. 10 p. 11 p. 1� p. 1� - p. 1� - - - p. 1�NSX160 p. 10 p. 11 p. 1� p. 1� - p. 1� - - - p. 1�NSX�50 p. 10 p. 11 p. 1� p. 1� - p. 1� - - - p. 1�NSX400 p. 10 p. 11 p. 1� p. 1� - p. 1� - - - p. 1�NSX630 - p. 11 p. 1� p. 1� - p. 1� - - - p. 1�380-415 V

NG160 p. 17 p. 18 p. 19 - - - - - - -NSC100 p. 17 p. 18 p. 19 - - - - - - -NSX100 p. 17 p. 18 p. 19 p. 19 p. 19 p. �0 p. 19 p. �0 p. �0 p. �0NSX160 p. 17 p. 18 p. 19 p. 19 p. 19 p. �0 p. 19 p. �0 p. �0 p. �0NSX�50 p. 17 p. 18 p. 19 p. 19 p. 19 p. �0 p. 19 p. �0 p. �0 p. �0NSX400 p. 17 p. 18 p. 19 p. 19 p. 19 p. �0 p. 19 p. �0 p. �0 p. �0NSX630 - p. 18 p. 19 p. 19 p. 19 p. �0 p. 19 p. �0 p. �0 p. �0NS630b - - p. 19 p. 19 p. 19 p. �0 p. 19 p. �0 p. �0 p. �0NS800 - - p. 19 p. 19 p. 19 p. �0 p. 19 p. �0 p. �0 p. �0NS1000 - - p. 19 p. 19 p. 19 p. �0 p. 19 p. �0 p. �0 p. �0NS1�50 - - - - - p. �0 - p. �0 p. �0 p. �0NS1600 - - - - - p. �0 - p. �0 p. �0 p. �0440 V

NG160 p. �� p. �3 - - - - - - - -NSC100 p. �� p. �3 - - - - - - - -NSX100 p. �� p. �3 p. �4 p. �4 p. �4 p. �5 p. �4 p. �5 p. �5 p. �5NSX160 p. �� p. �3 p. �4 p. �4 p. �4 p. �5 p. �4 p. �5 p. �5 p. �5NSX�50 p. �� p. �3 p. �4 p. �4 p. �4 p. �5 p. �4 p. �5 p. �5 p. �5NSX400 p. �� p. �3 p. �4 p. �4 p. �4 p. �5 p. �4 p. �5 p. �5 p. �5NSX630 - p. �3 p. �4 p. �4 p. �4 p. �5 p. �4 p. �5 p. �5 p. �5NS630b - - p. �4 p. �4 p. �4 p. �5 p. �4 p. �5 p. �5 p. �5NS800 - - p. �4 p. �4 p. �4 p. �5 p. �4 p. �5 p. �5 p. �5NS1000 - - - - - p. �5 - p. �5 p. �5 p. �5NS1�50 - - - - - p. �5 - p. �5 p. �5 p. �5NS1600 - - - - - p. �5 - p. �5 p. �5 p. �5


Cascading (cont.)Contents

Cascading and enhanced discriminationDownstream UpstreamType NSX400 NSX630 NS800 NS1000 NS1250 NS1600220-240 V

NG160 p. 31 p. 31 p. 31 p. 31 - -NSC100 p. 31 p. 31 p. 31 p. 31 - -NSX100 p. 31 p. 31 p. 31 p. 31 - -NSX160 p. 31 p. 31 p. 31 p. 31 - -NSX�50 p. 31 p. 31 p. 31 p. 31 - -NSX400 p. 31 p. 31 p. 31 p. 31 - -NSX630 p. 31 p. 31 p. 31 p. 31 - -380-415 V

NG160 p. 36 p. 36 - - - -NSC100 p. 36 p. 36 - - - -NSX100 p. 36 p. 36 p. 38 p. 38 p. 38 p. 38NSX160 p. 36 p. 36 p. 38 p. 38 p. 38 p. 38NSX�50 p. 36 p. 36 p. 38 p. 38 p. 38 p. 38NSX400 - - p. 38 p. 38 p. 38 p. 38NSX630 - - p. 38 p. 38 p. 38 p. 38440 V

NSX100 p. 40 p. 40 p. 41 p. 41 p. 41 p. 41NSX160 p. 40 p. 40 p. 41 p. 41 p. 41 p. 41NSX�50 p. 40 p. 40 p. 41 p. 41 p. 41 p. 41NSX400 - - p. 41 p. 41 p. 41 p. 41NSX630 - - p. 41 p. 41 p. 41 p. 41



Cascading (cont.) Upstream: iDPN, iC60, C120, NG125, NG160, NSC100Downstream: iDPN, iC60, C120, NG125, NG160220-240 V

UpstreamiDPN N iC60 C120

iC60N iC60H iC60L C120N C120H1P+N 3P+N y 25 32-40 50-63

Breaking capacity (kA)

10 15 20 30 50 36 30 20 30

DownstreamReinforced Breaking capacity (kA)

iDPN y 16 A 6 10 15 15 �0 30 �5 �0 15 �0�0 to 40 A 6 10 15 15 �0 30 �5 �0 15 �0

iDPN N y 16 A 10 15 �0 30 50 36 30 �0 30�0 to 40 A 10 15 �0 30 50 36 30 �0 30

iC60a 10 �0 30 50 36 30 �0 30iC60N y �5 A �0 30 50 36 30 �0 30

3�-40 A �0 30 36 30 �0 3050-63 A �0 30 30 �0 30

iC60H y �5 30 50 363�-40 A 30 3650-63 A 30

iC60L y �5 503�-40 A 3650-63 A 30

C120N �0 30C120H 30

UpstreamNG125 NG160 NSC100NG125N NG125H NG125L NG160E NG160N NG160H NSC100N


50 70 100 25 40 50 42


iDPN y 16 A 6 �0 40 50 �0 �0 �0 �0�0 to 40 A 6 �0 40 50 10 10 10 10

iDPN N y 16 A 10 30 40 50 30 30 30 30�0 to 40 A 10 30 40 50 15 15 15 15

iC60a 10 30 40 50 30 30 30 30iC60N �0 50 50 50 �5 40 50 4�iC60H 30 50 70 70 40 50 4�iC60L y �5 A 50 50 70 100 40 50

3�-40 A 36 50 70 100 40 50 4�50-63 A 30 50 70 70 40 50 4�

C120N �0 50 70 70 �5 40 50 4�C120H 30 50 70 70 40 50 4�NG125N 50 70 70NG125H 70 100NG125L 100NG160E �5 50NG160N 40NG160H 50


UpstreamNSX100NSX100B NSX100F NSX100N NSX100H NSX100S NSX100L


40 85 90 100 120 150


iDPN y 16 A 6 �0 �0 �0 �0 �0 �0�0 to 40 A 6 10 10 10 10 10 10

iDPN N y 16 A 10 30 30 30 30 30 30�0 to 40 A 10 15 15 15 15 15 15

iC60a 10 30 30 30 30 30 30iC60N �0 30 40 60 60 60 60iC60H 30 30 40 60 60 60 60iC60L y �5 A 50 40 65 80 80 80 80

3�-40 A 36 40 65 80 80 80 8050-63 A 30 40 65 80 80 80 80

C120N �0 40 40 50 50 70 70C120H 30 40 40 50 50 70 70NG125N 50 60 70 70 85 85NG125H 70 85 85 85 100 100NG125L 100 1�0 150NG160E �5NG160N 40NG160H 50NSC100N 4� 85 90 100 100 100NSX100B 40 85 90 90 100 100NSX100F 85 90 100 1�0 150NSX100N 90 100 1�0 150NSX100H 100 1�0 150NSX100S 1�0 150


220-240 V

Cascading (cont.) Upstream: NSX100Downstream: iDPN, iC60, C120, NG125, NG160, NSC100, NSX100




40 85 90 100 120 150


iDPN y 16 A 6 �0 �0 �0 �0 �0 �0�0 to 40 A 6 10 10 10 10 10 10

iDPN N y 16 A 10 30 30 30 30 30 30�0 to 40 A 10 15 15 15 15 15 15

iC60a 10 30 30 30 30 30 30iC60N �0 30 40 60 60 60 60iC60H 30 40 50 80 80 80 80iC60L y �5 A 50 65 80 80 80 80

3�-40 A 36 40 65 80 80 80 8050-63 A 30 40 65 80 80 80 80

C120N �0 40 40 50 50 70 70C120H 30 40 40 50 50 70 70NG125N 50 60 70 70 85 85NG125H 70 85 85 85 100 100NG125L 100 1�0 150NG160E �5 40 50 50 50 60 60NG160N 40 85 90 100 100 100NG160H 50 85 90 100 100 100NSC100N 4� 85 90 100 100 100NSX100B 40 85 90 90 100 100NSX100F 85 90 100 1�0 150NSX100N 90 100 1�0 150NSX100H 100 1�0 150NSX100S 1�0 150NSX160B 40 85 90 90 100 100NSX160F 85 90 100 1�0 150NSX160N 90 100 1�0 150NSX160H 100 1�0 150NSX160S 1�0 150


220-240 V

Cascading (cont.) Upstream: NSX160Downstream: iDPN, iC60, C120, NG125, NG160, NSC100, NSX100, NSX160



Cascading (cont.) Upstream: NSX250Downstream: iDPN, iC60, C120, NG125, NG160, NSC100, NSX100, NSX160, NSX250220-240 V



40 85 90 100 120 150


iDPN y 16 A 6 �0 �0 �0 �0 �0 �0�0 to 40 A 6 10 10 10 10 10 10

iDPN N y 16 A 10 30 30 30 30 30 30�0 to 40 A 10 15 15 15 15 15 15

iC60a 10 30 30 30 30 30 30iC60N �0 30 40 60 60 60 60iC60H 30 40 50 65 65 65 65iC60L y �5 A 50 65 80 80 80 80

3�-40 A 36 40 65 80 80 80 8050-63 A 30 40 40 65 65 65 65

C120N �0 40 40 50 50 70 70C120H 30 40 40 50 50 70 70NG125N 50 60 70 70 85 85NG125H 70 85 85 85 100 100NG125L 100 1�0 150NG160E �5 40 50 50 50 60 60NG160N 40 85 90 100 100 100NG160H 50 85 90 100 100 100NSC100N 4� 85 90 100 100 100NSX100B 40 85 90 90 100 100NSX100F 85 90 100 1�0 150NSX100N 90 100 1�0 150NSX100H 100 1�0 150NSX100S 1�0 150NSX160B 40 85 90 90 100 100NSX160F 85 90 100 1�0 150NSX160N 90 100 1�0 150NSX160H 100 1�0 150NSX160S 1�0 150NSX250B 40 85 90 90 100 100NSX250F 85 90 100 1�0 150NSX250N 90 100 1�0 150NSX250H 100 1�0 150NSX250S 1�0 150



Cascading (cont.) Upstream: NSX400Downstream: NG160, NSC100, NSX100, NSX160, NSX250, NSX400220-240 V

UpstreamNSX400NSX400F NSX400N NSX400H NSX400S NSX400L


40 85 100 120 150


NG160E �5 40 50 50 60 60NG160N 40 85 90 100 100NG160H 50 85 90 100 100NSC100N 4� 85 90 100 100NSX100B 40 85 90 100 100NSX100F 85 100 1�0 150NSX100N 90 100 1�0 150NSX100H 100 1�0 150NSX100S 1�0 150NSX160B 40 85 90 100 100NSX160F 85 100 1�0 150NSX160N 90 100 1�0 150NSX160H 100 1�0 150NSX160S 1�0 150NSX250B 40 85 90 100 100NSX250F 85 100 1�0 150NSX250N 90 100 1�0 150NSX250H 100 1�0 150NSX250S 1�0 150NSX400F 40 85 100 1�0 150NSX400N 85 100 1�0 150NSX400H 100 1�0 150NSX400S 1�0 150



Cascading (cont.) Upstream: NSX630Downstream: NG160, NSC100, NSX100, NSX160, NSX250, NSX400, NSX630220-240 V



40 85 100 120 150


NG160E �5 40 50 50 60 60NG160N 40 40 85 90 100 100NG160H 50 40 85 90 100 100NSC100N 4� 40 85 90 100 100NSX100B 40 85 90 100 100NSX100F 85 100 1�0 150NSX100N 90 100 1�0 150NSX100H 100 1�0 150NSX100S 1�0 150NSX160B 40 85 90 100 100NSX160F 85 100 1�0 150NSX160N 90 100 1�0 150NSX160H 100 1�0 150NSX160S 1�0 150NSX250B 40 85 90 100 100NSX250F 85 100 1�0 150NSX250N 90 100 1�0 150NSX250H 100 1�0 150NSX250S 1�0 150NSX400F 40 85 100 1�0 150NSX400N 85 100 1�0 150NSX400H 100 100 1�0 150NSX400S 1�0 1�0 150NSX630F 40 85 100 1�0 150NSX630N 85 100 1�0 150NSX630H 100 100 1�0 150NSX630S 1�0 1�0 150

1�version: 1.1 557E4�00.indd


Cascading (cont.) Upstream: NS630, NS800, NS1000, MasterpactDownstream: NSX100-160-250-400-630220-240 V

UpstreamNS630 NS800 NS1000 MasterpactNS630bL NS630LB NS800L NS800LB NS1000L NT L1 NW L1


150 200 150 200 150 150 150


NSX100B 40 50 50 50 50 50 50NSX100F 85 150 150 150 150 150 150NSX100N 90 150 150 150 150 150 150NSX100H 100 150 150 150 150 150 150NSX100S 1�0 150 �00 150 �00 150 150NSX100L 150 �00 �00NSX160B 40 50 50 50 50 50 50NSX160F 85 150 150 150 150 150 150NSX160N 90 150 150 150 150 150 150NSX160H 100 150 150 150 150 150 150NSX160S 1�0 150 �00 150 �00 150 150NSX160L 150 �00 �00NSX250B 40 50 50 50 50 50 50NSX250F 85 150 150 150 150 150 150NSX250N 90 150 150 150 150 150 150NSX250H 100 150 150 150 150 150 150NSX250S 1�0 150 �00 150 �00 150 150NSX250L �00 �00NSX400F 40 150 150 150 150 150 150NSX400N 85 150 150 150 150 150 150 100NSX400H 100 150 150 150 150 150 150NSX400S 1�0 150 �00 150 �00 150 150NSX400L 150 �00 �00NSX630F 40 150 150 150 150 150 150NSX630N 85 150 150 150 150 150 150 100NSX630H 100 150 150 150 150 150 150NSX630S 1�0 150 �00 150 �00 150 150NSX630L 150 �00 �00



Cascading (cont.) Upstream: iDPN, iC60, C120, NG125, NG160, NSC100Downstream: iDPN, iC60, C120, NG125380-415 V

UpstreamiDPN N iC60 C120

iC60N iC60H iC60L C120N C120Hy 25 32-40 50-63


10 10 15 25 20 15 10 15


iDPN 3P+N

y 16 A 6 10 10 10 �0 15 10 10 10�0 to 40 A 6 10 10 15 10 10 10 10

iDPN3P

6 10 10 10 �0 15 10 10 10

iDPN N 3P+N

y 16 A 10 15 �5 �0 15 10 15�0 to 40 A 10 15 �0 15 15 15 15

iDPN N3P

10 15 �5 �0 15 15

iC60a 6 10 10 �0 15 10 10 15iC60N y �5 A 10 15 �5 �0 15 15

3�-40 A 10 15 �0 15 1550-63 A 10 15 15 15

iC60H y �5 A 15 �5 �03�-40 A 15 �050-63 A 15

iC60L y �5 A �53�-40 A �050-63 A 15

C120N 10 15C120H 15

UpstreamNG125 NG160 NSC100NG125N NG125H NG125L NG160E NG160N NG160H NSC100N


25 36 50 16 25 36 18


iDPN 3P+N

y 16 A 6 10 15 �0 10 10 10 10�0 to 40 A 6 10 10 15 10 10 10 10

iDPN3P

6 �0 �0 �0 15 �0 �0 18

iDPN N 3P+N

y 16 A 10 15 �0 �5 15 15 15 15�0 to 40 A 10 15 15 �0 15 15 15 15

iDPN N3P

10 �5 �5 �5 15 �0 �0 18

iC60a 6 �0 �0 �0 15 �0 �0 18iC60N 10 �5 �5 �5 15 �0 �0 18iC60H 15 �5 36 36 15 �5 �5 18iC60L y �5 A �5 36 50 �5

3�-40 A �0 �5 36 50 �5 �550-63 A 15 �5 36 36 �5 �5 18

C120N 10 �5 �5 36 �5 �5 18C120H 15 �5 �5 36 �5 �5 18NG125N �5 36 36NG125H 36 50NG125L 50



Cascading (cont.) Upstream: NSX100Downstream: iDPN, iC60, C120, NG125, NG160, NSC100, NSX100380-415 V



25 36 50 70 100 150


iDPN 3P+N

y 16 A 6 10 10 10 10 10 10�0 to 40 A 6 10 10 10 10 10 10

iDPN3P

6 15 15 15 �0 �0 �0

iDPN N 3P+N

y 16 A 10 15 15 15 15 15 15�0 to 40 A 10 15 15 15 15 15 15

iDPN N3P

10 �0 �0 �0 �0 �0 �0

iC60a y �5 A 6 15 15 15 �0 �0 �03� to 63 A 6 10 10 10 15 15 15

iC60N 10 �0 �5 30 30 30 30iC60H y 40 A 15 �5 36 40 40 40 40

50-63 A 15 �5 36 36 36 36 36iC60L y �5 A �5 36 40 40 40 40

3�-40 A �0 �5 36 40 40 40 4050-63 A 15 �5 36 36 36 36 36

C120N 10 �5 �5 �5 �5 �5 �5C120H 15 �5 �5 �5 �5 �5 �5NG125N �5 36 36 36 50 70NG125H 36 40 50 70 100NG125L 50 70 100 150NSC100N 18 �5 36 50 50 50 50NSX100B �5 36 36 50 50 50NSX100F 36 50 70 100 150NSX100N 50 70 100 150NSX100H 70 100 150NSX100S 100 150



Cascading (cont.) Upstream: NSX160Downstream: iDPN, iC60, C120, NG125, NG160, NSC100, NSX100, NSX160380-415 V



25 36 50 70 100 150


iDPN 3P+N

y 16 A 6 10 10 10 10 10 10�0 to 40 A 6 10 10 10 10 10 10

iDPN3P

6 �0 �0 �0 �0 �0 �0

iDPN N 3P+N

y 16 A 10 15 15 15 15 15 15�0 to 40 A 10 15 15 15 15 15 15

iDPN N3P

10 �0 �0 �0 �0 �0 �0

iC60a y �5 A 6 15 15 15 �0 �0 �03� to 63 A 6 10 10 10 15 15 15

iC60N 10 �0 �5 30 30 30 30iC60H y 40 A 15 �5 36 40 40 40 40

50-63 A 15 �5 30 30 30 30 30iC60L y �5 A �5 36 40 40 40 40

3�-40 A �0 �5 36 40 40 40 4050-63 A 15 �5 30 30 30 30 30

C120N 10 �5 �5 �5 �5 �5 �5C120H 15 �5 �5 �5 �5 �5 �5NG125N �5 36 36 36 50 70NG125H 36 40 50 70 100NG125L 50 70 100 150NG160E 16 �5 �5 30 30 30 30NG160N �5 36 36 50 50 50NG160H 36 50 50 50 50NSC100N 18 �5 36 50 50 50 50NSX100B �5 36 36 50 50 50NSX100F 36 50 70 100 150NSX100N 50 70 100 150NSX100H 70 100 150NSX100S 100 150NSX160B �5 36 36 50 50 50NSX160F 36 50 70 100 150NSX160N 50 70 100 150NSX160H 70 100 150NSX160S 100 150



Cascading (cont.) Upstream: NSX250Downstream: iDPN, iC60, C120, NG125, NG160, NSC100, NSX100, NSX160, NSX250380-415 V



25 36 50 70 100 150


iDPN 3P+N

y 16 A 6 10 10 10 10 10 10�0 to 40 A 6 10 10 10 10 10 10

iDPN3P

6 �0 �0 �0 �0 �0 �0

iDPN N3P+N

y 16 A 10 15 15 15 15 15 15�0 to 40 A 10 15 15 15 15 15 15

iDPN N3P

10 �0 �0 �0 �0 �0 �0

iC60a y �5 A 6 15 15 15 �0 �0 �03� to 63 A 6 10 10 10 15 15 15

iC60N y 40 A 10 �0 �5 30 30 30 3050-63 A 10 �0 �5 �5 �5 �5 �5

iC60H y 40 A 15 �5 30 30 30 30 3050-63 A 15 �5 �5 �5 �5 �5 �5

iC60L y �5 A �5 30 30 30 30 303�-40 A �0 �5 30 30 30 30 3050-63 A 15 �5 �5 �5 �5 �5 �5

C120N 10 �5 �5 �5 �5 �5 �5C120H 15 �5 �5 �5 �5 �5 �5NG125N �5 36 36 36 50 70NG125H 36 40 50 70 100NG125L 50 70 100 150NG160E 16 �5 �5 30 30 30 30NG160N �5 36 36 50 50 50NG160H 36 50 50 50 50NSC100N 18 �5 36 50 50 50 50NSX100B �5 36 36 50 50 50NSX100F 36 50 70 100 150NSX100N 50 70 100 150NSX100H 70 100 150NSX100S 100 150NSX160B �5 36 36 50 50 50NSX160F 36 50 70 100 150NSX160N 50 70 100 150NSX160H 70 100 150NSX160S 100 150NSX250B �5 36 36 50 50 50NSX250F 36 50 70 100 150NSX250N 50 70 100 150NSX250H 70 100 150NSX250S 100 150



Cascading (cont.) Upstream: NSX400Downstream: NG160, NSC100, NSX100, NSX160, NSX250, NSX400



36 50 70 100 150


NG160E 16 �5 �5 30 30 30NG160N �5 36 50 50 50NG160H 36 50 50 50 50NSC100N 18 50 50 50 50NSX100B �5 36 36 50 50 50NSX100F 36 50 70 100 150NSX100N 50 70 100 150NSX100H 70 100 150NSX100S 100 150NSX160B �5 36 36 50 50 50NSX160F 36 50 70 100 150NSX160N 50 70 100 150NSX160H 70 100 150NSX160S 100 150NSX250B �5 36 36 50 50 50NSX250F 36 50 70 100 150NSX250N 50 70 100 150NSX250H 70 100 150NSX250S 100 150NSX400F 36 50 70 100 150NSX400N 50 70 100 150NSX400H 70 100 150NSX400S 100 150

380-415 V



Cascading (cont.) Upstream: NSX630Downstream: NG160, NSC100, NSX100, NSX160, NSX250, NSX400, NSX630380-415 V



36 50 70 100 150


NG160E 16 �5 �5 30 30 30NG160N �5 36 50 50 50NG160H 36 50 50 50 50NSC100N 18 50 50 50 50NSX100B �5 36 36 50 50 50NSX100F 36 50 70 100 150NSX100N 50 70 100 150NSX100H 70 100 150NSX100S 100 150NSX160B �5 36 36 50 50 50NSX160F 36 50 70 100 150NSX160N 50 70 100 150NSX160H 70 100 150NSX160S 100 150NSX250B �5 36 36 50 50 50NSX250F 36 50 70 100 150NSX250N 50 70 100 150NSX250H 70 100 150NSX250S 100 150NSX400F 36 50 70 100 150NSX400N 50 70 100 150NSX400H 70 100 150NSX400S 100 150NSX630F 36 50 70 100 150NSX630N 50 70 100 150NSX630H 70 100 150NSX630S 100 150



Cascading (cont.) Upstream: NS630bN to NS1600N, NS630b, NS800Downstream: NSX100, NSX160, NSX250, NSX400, NSX630, NS630b, NS800, NS1000380-415 V

UpstreamNS630bN NS630b NS800to NS1600N

H L LB H L LB


50 70 150 200 70 150 200


NSX100B �5 50 50 50 50 50 50 50NSX100F 36 50 70 150 150 70 150 150NSX100N 50 70 150 150 70 150 150NSX100H 70 150 150 150 150NSX100S 100 150 �00 150 �00NSX100L 150 �00 �00NSX160B �5 50 50 50 50 50 50 50NSX160F 36 50 70 150 150 70 150 150NSX160N 50 70 150 150 70 150 150NSX160H 70 150 150 150 150NSX160S 100 150 �00 150 �00NSX160L 150 �00 �00NSX250B �5 50 50 50 50 50 50 50NSX250F 36 50 70 150 150 70 150 150NSX250N 50 70 150 150 70 150 150NSX250H 70 150 150 150 150NSX250S 100 150 �00 150 �00NSX250L 150 �00 �00NSX400F 36 50 70 150 150 70 150 150NSX400N 50 70 150 150 70 150 150NSX400H 70 150 150 150 150NSX400S 100 150 �00 150 �00NSX400L 150 �00 �00NSX630F 36 50 70 150 150 70 150 150NSX630N 50 70 150 150 70 150 150NSX630H 70 150 150 150 150NSX630S 100 150 �00 150 �00NSX630L 150 �00 �00NS630bN 50 70 150 �00 70 150 �00NS630bH 70 150 �00 150 �00NS800N 50 70 150 �00NS800H 70 150 �00NS1000N 50 �00NS1000H 70 �00

�0version: 1.1 557E4�00.indd


Cascading (cont.) Upstream: NS1000, NS1250, NS1600, NS2000, NS2500, NS3200, MasterpactDownstream: NSX100-160-250-400-630, NS630b, NS800-1000-1250-1600380-415 V

UpstreamNS1000 NS1250H NS2000N Masterpact

NS1600H NS2500NH L NS3200N NT L1 NW L1


70 150 70 70 150 150


NSX100B �5 50 50 50 50NSX100F 36 70 150 70 150NSX100N 50 70 150 70 150NSX100H 70 150 150NSX100S 100 150 150NSX100L 150NSX160B �5 50 50 50 50NSX160F 36 70 150 70 150NSX160N 50 70 150 70 150NSX160H 70 150 150NSX160S 100 150 150NSX160L 150NSX250B �5 50 50 50 50NSX250F 36 70 150 70 150NSX250N 50 70 150 70 150NSX250H 70 150 150NSX250S 100 150 150NSX250L 150NSX400F 36 70 150 70 150NSX400N 50 70 150 70 150NSX400H 70 150 150NSX400S 100 150 150NSX400L 150NSX630F 36 70 150 70 150NSX630N 50 70 150 70 150NSX630H 70 150 150NSX630S 100 150 150NSX630L 150NS630bN 50 70 150 70 70 150 65NS630bH 70 150 150NS800N 50 150 70 70 150 65NS800H 70 150 150NS1000N 50 150 70 70 150 65NS1000H 70 150 150NS1250N 50 70 70 65NS1600N 50 70 65



Cascading (cont.) Upstream: NSX100, NSX160Downstream: iC60, C120, NG125, NSC100, NSX100, NSX160440 V



20 35 50 65 90 130


iC60N 6 15 15 �0 �0 �0 �0iC60H 10 �0 �0 �5 �5 �5 �5iC60L y �5 A �0 �5 �5 �5 �5

3�-40 A 15 �0 �0 �5 �5 �5 �550-63 A 10

NSC100N 18 �0 35 50 50 50 50 NSX100B �0 35 35 50 50 50 NSX100F 35 50 65 90 130 NSX100N 50 65 90 130 NSX100H 65 90 130 NSX100S 90 130



20 35 50 65 90 130


iC60N 6 15 15 �0 �0 �0 �0iC60H 10 �0 �0 �5 �5 �5 �5iC60L y �5 A �0 �5 �5 �5 �5

3�-40 A 15 �0 �0 �5 �5 �5 �550-63 A 10

NG160E 16 �0 �0 30 30 30 30 NG160N �5 35 35 50 50 50 NG160H 30 50 50 50 50 NSC100N 18 �0 35 50 50 50 50 NSX100B �0 35 35 50 50 50 NSX100F 35 50 65 90 130 NSX100N 50 65 90 130 NSX100H 65 90 130 NSX100S 90 130 NSX160B �0 35 35 50 50 50 NSX160F 35 50 65 90 130 NSX160N 50 65 90 130 NSX160H 65 90 130 NSX160S 90 130

��version: 1.1 557E4�00.indd


Cascading (cont.) Upstream: NSX250, NSX400Downstream: NG160, NSC100, NSX100, NSX160, NSX250, NSX400440 V



20 35 50 65 90 130


NG160E 16 �0 �0 30 30 30 30 NG160N �5 35 35 50 50 50 NG160H 30 50 50 50 50 NSC100N 18 �0 35 50 50 50 50 NSX100B �0 35 35 50 50 50 NSX100F 35 50 65 90 130 NSX100N 50 65 90 130 NSX100H 65 90 130 NSX100S 90 130 NSX160B �0 35 35 50 50 50 NSX160F 35 50 65 90 130 NSX160N 50 65 90 130 NSX160H 65 90 130 NSX160S 90 130 NSX250B �0 35 35 50 50 50 NSX250F 35 50 65 90 130 NSX250N 50 65 90 130 NSX250H 65 90 130 NSX250S 90 130



30 42 65 90 130


NG160E 16 �0 30 30 30 30 NG160N �5 30 30 50 50 50 NG160H 30 4� 50 50 50 NSC100N 18 30 4� 50 50 50 NSX100B �0 30 30 50 50 50 NSX100F 35 4� 65 90 130 NSX100N 50 65 90 130 NSX100H 65 90 130 NSX100S 90 130 NSX160B �0 30 30 50 50 50 NSX160F 35 4� 65 90 130 NSX160N 50 65 90 130 NSX160H 65 90 130 NSX160S 90 130 NSX250B �0 30 30 50 50 50 NSX250F 35 4� 65 90 130 NSX250N 50 65 90 130 NSX250H 65 90 130 NSX250S 90 130 NSX400F 30 4� 65 90 130 NSX400N 4� 65 90 130 NSX400H 65 90 130 NSX400S 90 130



Cascading (cont.) Upstream: NSX630Downstream: NG160, NSC100, NSX100, NSX160, NSX250, NSX400, NSX630440 V



30 42 65 90 130


NG160E 16 �0 30 30 30 30 NG160N �5 30 30 50 50 50 NG160H 30 4� 50 50 50 NSC100N 18 30 4� 50 50 50 NSX100B �0 30 30 50 50 50 NSX100F 35 4� 65 90 130 NSX100N 50 65 90 130 NSX100H 65 90 130 NSX100S 90 130 NSX160B �0 35 30 50 50 50 NSX160F 35 4� 65 90 130 NSX160N 50 65 90 130 NSX160H 65 90 130 NSX160S 90 130 NSX250B �0 35 30 50 50 50 NSX250F 35 4� 65 90 130 NSX250N 50 65 90 130 NSX250H 65 90 130 NSX250S 90 130 NSX400F 30 4� 65 90 130 NSX400N 4� 65 90 130 NSX400H 65 90 130 NSX400S 90 130 NSX630F 30 4� 65 90 130 NSX630N 4� 65 90 130 NSX630H 65 90 130 NSX630S 90 130



Cascading (cont.) Upstream: NS630bN to NS1600N, NS630b, NS800Downstream: NSX100, NSX160, NSX250, NSX400, NSX630, NS630b, NS800440 V

UpstreamNS630bN NS630b NS800to NS1600N

H L LB H L LB


50 65 130 200 65 130 200


NSX100B �0 50 50 50 50 50 50 50 NSX100F 35 50 65 130 130 65 130 130 NSX100N 50 65 130 130 65 130 130 NSX100H 65 130 130 130 130 NSX100S 90 130 �00 130 �00NSX100L 130 �00 �00NSX160B �0 50 50 50 50 50 50 50NSX160F 35 50 65 130 130 65 130 130 NSX160N 50 65 130 130 65 130 130 NSX160H 65 130 130 130 130 NSX160S 90 130 �00 130 �00NSX160L 130 �00 �00NSX250B �0 50 50 50 50 50 50 50NSX250F 35 50 65 130 130 65 130 130 NSX250N 50 65 130 130 65 130 130 NSX250H 65 130 130 130 130 NSX250S 90 130 �00 130 �00NSX250L 130 �00 �00NSX400F 30 50 65 130 130 65 130 130 NSX400N 4� 65 130 130 65 130 130 NSX400H 65 130 130 130 130 NSX400S 90 130 �00 130 �00NSX400L 130 �00 �00NSX630F 30 50 65 130 130 65 130 130 NSX630N 4� 65 130 130 65 130 130 NSX630H 65 130 130 130 130 NSX630S 90 130 �00 130 �00NSX630L 130 �00 �00NS630bN 50 65 130 �00 65 130 �00NS630bH 65 130 �00 130 �00NS800N 50 65 130 �00NS800H 65 130 �00



Cascading (cont.) Upstream: NS1000, NS1250, NS1600, NS2000, NS2500, NS3200, MasterpactDownstream: NSX100, NSX160, NSX250, NSX400, NSX630, NS630b, NS800-1000-1250-1600440 V

UpstreamNS1000 NS1250H NS2000N Masterpact

NS1600H NS2500NH L NS3200N NT L1 NW L1


65 130 65 65 130 150


NSX100B �0 50 50 50 50 NSX100F 35 65 130 65 130 NSX100N 50 65 130 65 130 NSX100H 65 130 130 NSX100S 90 130 130 NSX100L 130NSX160B �0 50 50 50 50 NSX160F 35 65 130 65 130 NSX160N 50 65 130 65 130 NSX160H 65 130 130 NSX160S 90 130 130 NSX160L 130NSX250B �0 50 50 50 50 NSX250F 35 65 130 65 130 NSX250N 50 65 130 65 130 NSX250H 65 130 130 NSX250S 90 130 130 NSX250L 130NSX400F 30 65 130 65 130 NSX400N 4� 65 130 65 130 NSX400H 65 130 130 NSX400S 90 130 130 NSX400L 130NSX630F 30 65 130 65 130 NSX630N 4� 65 130 65 130 NSX630H 65 130 130 NSX630S 90 130 130 NSX630L 130NS630bN 50 65 130 65 65 130 65 NS630bH 65 130 130 NS800N 50 65 130 65 65 130 65 NS800H 65 130 130 NS1000N 50 65 130 65 65 130 65 NS1000H 65 130 130 NS1250N 50 65 65 65 NS1600N 50 65


Note: respect the basic rules of discrimination, in terms of overload, short-circuit, see page 557E4300 et 557E4305.


Cascading and enhanced discrimination

With traditional circuit breakers, cascading between two devices generally results in the look of discrimination.With Compact circuit breakers, the discrimination characteristics in the tables remain applicable and are in some cases even enhanced. Protection discrimination is ensured for short-circuit currents greater than the rated breaking capacity of the circuit breaker and even, in some cases, for its enhanced breaking capacity. In the later case, protection discrimination is total, i.e. only the downstream device trips for any and all possible faults at its point in the installation.ExampleConsider a combination between:

a Compact NSX�50H with trip unit TM�50Da Compact NSX100F with trip unit TM�5D.

The discrimination tables indicate total discrimination. Protection discrimination is therefore ensured up to the breaking capacity of the NSX100F, i.e. 36 kA.The cascading tables indicate an enhanced breaking capacity of 70 kA.The enhanced discrimination tables indicate that in a cascading configuration, discrimination is ensured up to 70 kA, i.e. for any and all possible faults at that point in the installation.

Enhanced discrimination tables - 380/415 VFor each combination of two circuit breakers, the tables indicate the:

Selectivity limit enhanced by cascading (in kA)

Downstream device breaking capacity enhanced by cascading (in kA)

15 / 25

In a table, a box containing two equal values indicates that discrimination is provided up to the reinforced breaking capacity of the downstream device.These tables apply only to cases with combined discrimination and cascading between two devices. For all other cases, refer to the normal cascading and discrimination tables.

Technical principleEnhanced discrimination is the result of the exclusive Compact NSX Roto-active breaking technique which operates as follows:

due to the short-circuit current (electrodynamic forces), the contacts in both devices simultaneously separate. The result is major limitation of the short-circuit current

the dissipated energy provokes the reflex tripping of the downstream device, but is insufficient to trip the upstream device.

bb

b

b

DB

1�56

77

iC60N63 A



Cascading and enhanced discrimination Upstream: NSX160, NSX250, TM-DDownstream: iC60, C120, NG125220-240 V



40 85 90 100 120 150

Trip unit TM-D TM-D TM-D TM-D TM-D TM-DRating (A) 80-

100125-160

80-100

125-160

80-100

125-160

80-100

125-160

80-100

125-160

80-100

125-160

Downstream Breaking capacity (kA)

Reinforced Breaking capacity (kA)iC60a 10 30/30 30/30 30/30 30/30 30/30 30/30iC60N �0 30/30 40/40 60/60 60/60 60/60 60/60iC60H 30 40/40 50/50 80/80 80/80 80/80 80/80iC60L y �5 A 50 65/65 80/80 80/80 80/80 80/80

3�-40 A 36 40/40 65/65 80/80 80/80 80/80 80/8050-63 A 30 40/40 65/65 80/80 80/80 80/80 80/80

C120N/H y 40 A �0/30 40/40 40/40 50/50 50/50 70/70 70/7050 to1�5 A �0/30

NG125N y 40 A 50 60/60 70/70 70/70 85/85 85/8550 to 1�5 A 50

NG125H y 40A 70 85/85 85/85 85/85 100/100 100/10050 to 80 A 70



40 85 90 100 120 150

Trip unit TM-D TM-D TM-D TM-D TM-D TM-DRating (A) 200-250 200-250 200-250 200-250 200-250 200-250



3�-40 A 36 40/40 65/65 80/80 80/80 80/80 80/8050-63 A 30 40/40 40/40 65/65 65/65 65/65 65/65

C120N/H y 100 A �0/30 40/40 40/40 50/50 50/50 70/70 70/701�5 A �0/30

NG125N y 100 A 50 60/60 70/70 70/70 85/85 85/851�5 A 50

NG125H 70 85/85 85/85 85/85 100/100 100/100




Cascading and enhanced discrimination Upstream: NSX100, NSX160, MicrologicDownstream: iC60220-240 V



40 85 90 100 120 150

Trip unit Micrologic Micrologic Micrologic Micrologic Micrologic MicrologicRating (A) 40 100 40 100 40 100 40 100 40 100 40 100


Reinforced Breaking capacity (kA)iC60a y �5 A 10 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30

3� to 63 A 10 30/30 30/30 30/30 30/30 30/30 30/30iC60N y �5 A �0 40/40 40/40 40/40 40/40 60/60 60/60 60/60 60/60 60/60 60/60 60/60 60/60

3�-40 A �0 40/40 40/40 60/60 60/60 60/60 60/6050-63 A �0

iC60H y �5 A 30 40/40 40/40 50/50 50/50 80/80 80/80 80/80 80/80 80/80 80/80 80/80 80/803�-40 A 30 40/40 50/50 80/80 80/80 80/80 80/8050-63 A 30

iC60L y �5 A 50 65/65 65/65 80/80 80/80 80/80 80/80 80/80 80/80 80/80 80/803�-40 A 36 65/65 80/80 80/80 80/80 80/8050-63 A 30



40 85 90 100 120 150



Reinforced Breaking capacity (kA)iC60a y 50 A 10 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30

63 A 10 30/30 30/30 30/30 30/30 30/30 30/30iC60N y 50 A �0 40/40 40/40 40/40 40/40 60/60 60/60 60/60 60/60 60/60 60/60 60/60 60/60

63 A �0 40/40 40/40 60/60 60/60 60/60 60/60iC60H y 50 A 30 40/40 40/40 50/50 50/50 80/80 80/80 80/80 80/80 80/80 80/80 80/80 80/80

50 A 30 40/40 40/40 50/50 50/50 80/80 80/80 80/80 80/80 80/80 80/80 80/80 80/8063 A 30 40/40 50/50 80/80 80/80 80/80 80/80

iC60L y �5 A 50 65/65 65/65 80/80 80/80 80/80 80/80 80/80 80/80 80/80 80/803�-40 A 36 65/65 65/65 80/80 80/80 80/80 80/80 80/80 80/80 80/80 80/8050 A 30 40/40 40/40 65/65 65/65 80/80 80/80 80/80 80/80 80/80 80/80 80/80 80/8063 A 30 40/40 65/65 80/80 80/80 80/80 80/80





40 85 90 100 120 150

Trip unit Micrologic Micrologic Micrologic Micrologic Micrologic MicrologicRating (A) 250 250 250 250 250 250



3�-40 A 36 65/65 80/80 80/80 80/80 80/8050-63 A 30 40/40 65/65 65/65 65/65 65/65 65/65

C120N/H �0/30 40/40 40/40 50/50 50/50 70/70 70/70NG125N 50 60/60 70/70 70/70 85/85 85/85NG125H 70 85/85 85/85 85/85 100/100 100/100


Cascading and enhanced discrimination Upstream: NSX250, MicrologicDownstream: iC60, C120, NG125220-240 V




Cascading and enhanced discrimination Upstream: NSX250, TM-D, MicrologicDownstream: NG160, NSC100, NSX100220-240 V



85 90 100 120 150

Trip unit TM-D TM-D TM-D TM-D TM-DRating (A) 160 200-

250160 200-

250160 200-

250160 200-

250160 200-250


Reinforced Breaking capacity (kA)NG160E �5 40/40 50/50 50/50 60/60 60/60NG160N/H 50 85/85 90/90 100/100 100/100 100/100NSC100N 4� 85/85 90/90 100/100 100/100 100/100NSX100B, TM-D

y �5 A 40 85/85 90/90 100/100 100/100 100/10040-100 A 40 36/85 36/90 36/100 36/1�0 36/150

NSX100F, TM-D

y �5 A 85 90/90 100/100 1�0/1�0 150/15040-100 A 85 36/90 36/100 36/1�0 36/150

NSX100N, TM-D

y �5 A 90 100/100 1�0/1�0 150/15040-100 A 90 36/100 36/1�0 36/150

NSX100H, TM-D

y �5 A 100 1�0/1�0 150/15040-100 A 100 36/1�0 36/150

NSX100S, TM-D

y �5 A 1�0 150/15040-100 A 1�0 36/150

NSX100B Micrologic 40 36/85 36/90 36/100 36/1�0 36/100NSX100F Micrologic 85 36/90 36/100 36/1�0 36/150NSX100N Micrologic 90 36/100 36/1�0 36/150NSX100H Micrologic 100 36/1�0 36/150NSX100S Micrologic 1�0 36/150



85 90 100 120 150

Trip unit Micrologic Micrologic Micrologic Micrologic MicrologicRating (A) 160 200-

250160 200-

250160 200-

250160 200-

250160 200-250


Reinforced Breaking capacity (kA)NG160E �5 40/40 40/40 50/50 50/50 50/50 50/50 60/60 60/60 60/60 60/60NG160N/H 50 85/85 85/85 90/90 90/90 100/100 100/100 100/100 100/100 100/100 100/100NSC100N 4� 85/85 85/85 90/90 90/90 100/100 100/100 100/100 100/100 100/100 100/100NSX100B, TM-D

y �5 A 40 85/85 85/85 90/90 90/90 100/100 100/100 100/100 100/100 100/100 100/10040-100 A 40 36/85 36/85 36/90 36/90 36/100 36/100 36/1�0 36/1�0 36/150 36/150

NSX100F, TM-D

y �5 A 85 90/90 90/90 100/100 100/100 1�0/1�0 1�0/1�0 150/150 150/15040-100 A 85 36/90 36/90 36/100 36/100 36/1�0 36/1�0 36/150 36/150

NSX100N, TM-D

y �5 A 90 100/100 100/100 1�0/1�0 1�0/1�0 150/150 150/15040-100 A 90 36/100 36/100 36/1�0 36/1�0 36/150 36/150

NSX100H, TM-D

y �5 A 100 1�0/1�0 1�0/1�0 150/150 150/15040-100 A 100 36/1�0 36/1�0 36/150 36/150

NSX100S, TM-D

y �5 A 1�0 150/150 150/15040-100 A 1�0 36/150 36/150

NSX100B Micrologic 40 36/85 36/85 36/90 36/90 36/100 36/100 36/100 36/100 36/100 36/100NSX100F Micrologic 85 36/90 36/90 36/100 36/100 36/1�0 36/1�0 36/150 36/150NSX100N Micrologic 90 36/100 36/100 36/1�0 36/1�0 36/150 36/150NSX100H Micrologic 100 36/1�0 36/1�0 36/150 36/150NSX100S Micrologic 1�0 36/150 36/150




Cascading and enhanced discrimination Upstream: NSX400-630, NS800-1000, MicrologicDownstream: NG160, NSC100, NSX100-630220-240 V

UpstreamNSX400 NSX630 NS800 NS1000N H S L N H S L L LB L


85 100 120 150 85 100 120 150 150 200 150

Trip unit Micrologic Micrologic Micrologic MicrologicRating (A) 400 400 400 400 630 630 630 630 800 1000


Reinforced Breaking capacity (kA)NG160E �5 50/50 50/50 60/60 60/60 50/50 50/50 60/60 60/60NG160N/H 50 85/85 90/90 100/100 100/100 85/85 90/90 100/100 100/100NSC100N 4� 85/85 90/90 100/100 100/100 85/85 90/90 100/100 100/100NSX100B, TM-D 40 85/85 90/90 100/100 100/100 85/85 90/90 100/100 100/100 50/50 50/50 50/50NSX100F, TM-D 85 90/90 1�0/1�0 150/150 90/90 1�0/1�0 150/150 150/150 150/150 150/150NSX100N, TM-D 90 100/100 1�0/1�0 150/150 100/100 1�0/1�0 150/150 150/150 150/150 150/150NSX100H, TM-D 100 1�0/1�0 150/150 1�0/1�0 150/150 150/150 150/150 150/150NSX100S, TM-D 1�0 150/150 150/150 150/150 �00/�00 150/150NSX100L, TM-D 150 �00/�00NSX160B, TM-D 40 85/85 90/90 100/100 100/100 85/85 90/90 100/100 100/100 50/50 50/50 50/50NSX160F, TM-D 85 90/90 1�0/1�0 150/150 90/90 1�0/1�0 150/150 150/150 150/150 150/150NSX160N, TM-D 90 100/100 1�0/1�0 150/150 100/100 1�0/1�0 150/150 150/150 150/150 150/150NSX160H, TM-D 100 1�0/1�0 150/150 1�0/1�0 150/150 150/150 150/150 150/150NSX160S, TM-D 1�0 150/150 150/150 150/150 �00/�00 150/150NSX160L, TM-D 150 �00/�00NSX250B, TM-D 40 85/85 90/90 100/100 100/100 50/50 50/50 50/50NSX250F, TM-D 85 90/90 1�0/1�0 150/150 150/150 150/150 150/150NSX250N, TM-D 90 100/100 1�0/1�0 150/150 150/150 150/150 150/150NSX250H, TM-D 100 1�0/1�0 150/150 150/150 150/150 150/150NSX250S, TM-D 1�0 150/150 150/150 �00/�00 150/150NSX250L, TM-D 150 �00/�00NSX100B Micrologic 40 85/85 90/90 100/100 100/100 85/85 90/90 100/100 100/100 50/50 50/50 50/50NSX100F Micrologic 85 90/90 1�0/1�0 150/150 90/90 1�0/1�0 150/150 150/150 150/150 150/150NSX100N Micrologic 90 100/100 1�0/1�0 150/150 100/100 1�0/1�0 150/150 150/150 150/150 150/150NSX100H Micrologic 100 1�0/1�0 150/150 1�0/1�0 150/150 150/150 150/150 150/150NSX100S Micrologic 1�0 150/150 150/150 150/150 �00/�00 150/150NSX100L Micrologic 150 �00/�00NSX160B Micrologic 40 85/85 90/90 100/100 100/100 85/85 90/90 100/100 100/100 50/50 50/50 50/50NSX160F Micrologic 85 90/90 1�0/1�0 150/150 90/90 1�0/1�0 150/150 150/150 150/150 150/150NSX160N Micrologic 90 100/100 1�0/1�0 150/150 100/100 1�0/1�0 150/150 150/150 150/150 150/150NSX160H Micrologic 100 1�0/1�0 150/150 1�0/1�0 150/150 150/150 150/150 150/150NSX160S Micrologic 1�0 150/150 150/150 150/150 �00/�00 150/150NSX160L Micrologic 150 �00/�00NSX250B Micrologic 40 85/85 90/90 100/100 100/100 50/50 50/50 50/50NSX250F Micrologic 85 90/90 1�0/1�0 150/150 150/150 150/150 150/150NSX250N Micrologic 90 100/100 1�0/1�0 150/150 150/150 150/150 150/150NSX250H Micrologic 100 1�0/1�0 150/150 150/150 150/150 150/150NSX250S Micrologic 1�0 150/150 150/150 �00/�00 150/150NSX250L Micrologic 150 �00/�00NSX400F Micrologic 40 10/150 10/150 15/150NSX400N Micrologic 85 10/150 10/150 15/150NSX400H Micrologic 100 10/150 10/150 15/150NSX400S Micrologic 1�0 10/150 10/�00 15/150NSX400L Micrologic 150 10/�00NSX630F Micrologic 40 10/150NSX630N Micrologic 85 10/150NSX630H Micrologic 100 10/150NSX630S Micrologic 1�0 10/150




Cascading and enhanced discrimination Upstream: NG160, TM-DDownstream: iC60380-415 V


UpstreamNG160NG160E NG160N


16 25

Trip unit TM-D TM-DRating (A) 63 80 100 125 160 63 80 100 125 160


Reinforced Breaking capacity (kA)iC60a y �0 A 6 10/15 15/15 15/15 15/15 15/15 10/�0 15/�0 �0/�0 �0/�0 �0/�0

�5 A 6 6/15 6/15 15/15 15/15 15/15 6/�0 6/�0 �0/�0 �0/�0 �0/�0iC60N y �0 A 10 10/15 15/15 15/15 15/15 15/15 10/�0 15/�0 �0/�0 �0/�0 �0/�0

�5 A 10 6/15 6/15 15/15 15/15 15/15 6/�0 6/�0 �0/�0 �0/�0 �0/�03� A 10 4/15 4/15 7/15 15/15 15/15 4/�0 4/�0 7/�0 �0/�0 �0/�040 A 10 4/15 7/15 8/15 8/15 4/�0 7/�0 8/�0 8/�050 A 10 5/15 8/15 8/15 5/�0 8/�0 8/�063 A 10 6/15 6/15 6/�0 6/�0

iC60H y �0 A 15 10/�5 15/�5 �5/�5 �5/�5 �5/�5�5 A 15 6/�5 6/�5 �5/�5 �5/�5 �5/�53� A 15 4/�5 4/�5 7/�5 �5/�5 �5/�540 A 15 4/�5 7/�5 8/�5 8/�550 A 15 5/�5 8/�5 8/�563 A 15 6/�5 6/�5

iC60L y �0 A �5 10/�5 15/�5 �5/�5 �5/�5 �5/�5�5 A �5 6/�5 6/�5 �5/�5 �5/�5 �5/�53� A �0 4/�5 4/�5 7/�5 �5/�5 �5/�540 A �0 4/�5 7/�5 8/�5 8/�550 A 15 5/�5 8/�5 8/�563 A 15 6/�5 6/�5

UpstreamNG160NG160H


36

Trip unit TM-DRating (A) 63 80 100 125 160


Reinforced Breaking capacity (kA)iC60a y �0 A 6 10/�0 15/�0 �0/�0 �0/�0 �0/�0

�5 A 6 6/�0 6/�0 �0/�0 �0/�0 �0/�0iC60N y �0 A 10 10/�0 15/�0 �0/�0 �0/�0 �0/�0

�5 A 10 6/�0 6/�0 �0/�0 �0/�0 �0/�03� A 10 4/�0 4/�0 7/�0 �0/�0 �0/�040 A 10 4/�0 7/�0 8/�0 8/�050 A 10 5/�0 8/�0 8/�063 A 10 6/�0 6/�0

iC60H y �0 A 15 10/�5 15/�5 �5/�5 �5/�5 �5/�5�5 A 15 6/�5 6/�5 �5/�5 �5/�5 �5/�53� A 15 4/�5 4/�5 7/�5 �5/�5 �5/�540 A 15 4/�5 7/�5 8/�5 8/�550 A 15 5/�5 8/�5 8/�563 A 15 6/�5 6/�5

iC60L y �0 A �5 10/�5 15/�5 �5/�5 �5/�5 �5/�5�5 A �5 6/�5 6/�5 �5/�5 �5/�5 �5/�53� A �0 4/�5 4/�5 7/�5 �5/�5 �5/�540 A �0 4/�5 7/�5 8/�5 8/�550 A 15 5/�5 8/�5 8/�563 A 15 6/�5 6/�5



Cascading and enhanced discrimination Upstream: NSX160, NSX250, TM-DDownstream: iC60, C120, NG125380-415 V



25 36 50 70 100 150

Trip unit TM-D TM-D TM-D TM-D TM-D TM-DRating (A) 80-

100125-160

80-100

125-160

80-100

125-160

80-100

125-160

80-100

125-160

80-100

125-160


Reinforced Breaking capacity (kA)iC60a y �5 A 6 15/15 15/15 15/15 15/15 15/15 15/15

3� to 63 A 6 10/10 10/10 10/10 10/10 10/10 10/10iC60N 10 �0/�0 �5/�5 30/30 30/30 30/30 30/30iC60H y 40 A 15 �5/�5 36/36 40/40 40/40 40/40 40/40

50-63 A 15 �5/�5 30/30 30/30 30/30 30/30 30/30iC60L y �5 A �5 36/36 40/40 40/40 40/40 40/40

3�-40 A �0 �5/�5 36/36 40/40 40/40 40/40 40/4050-63 A 15 �5/�5 30/30 30/30 30/30 30/30 30/30

C120N/H y 40 A 10/15 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�550 to 1�5 A 10/15

NG125N y 40 A �5 36/36 36/36 36/36 36/36 70/7050 to 1�5 A �5

NG125H y 40 A 36 50/50 50/50 50/50 100/10050 to 80 A 36

NG125L y 40 A 50 70/70 100/100 150/15050 to 80 A 50



25 36 50 70 100 150

Trip unit TM-D TM-D TM-D TM-D TM-D TM-DRating (A) 200-250 200-250 200-250 200-250 200-250 200-250



3� to 63 A 6 10/10 10/10 10/10 10/10 10/10 10/10iC60N y 40 A 10 �0/�0 �5/�5 30/30 30/30 30/30 30/30

50-63 A 10 �0/�0 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5iC60H y 40 A 15 �5/�5 30/30 30/30 30/30 30/30 30/30

50-63 A 15 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5iC60L y �5 A �5 30/30 30/30 30/30 30/30 30/30

3�-40 A �0 �5/�5 30/30 30/30 30/30 30/30 30/3050-63 A 15 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5

C120N/H 10/15 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5NG125N �5 36/36 36/36 36/36 50/50 70/70NG125H 36 50/50 50/50 70/70 100/100NG125L 50 70/70 100/100 150/150




Cascading and enhanced discrimination Upstream: NSX100, NSX160, MicrologicDownstream: iC60, C120, NG125380-415 V



25 36 50 70 100 150



Reinforced Breaking capacity (kA)iC60a y �5 A 6 15/15 15/15 15/15 15/15 15/15 15/15 �0/�0 �0/�0 �0/�0 �0/�0 �0/�0 �0/�0

3� to 63 A 6 10/10 10/10 10/10 15/15 15/15 15/15iC60N y �5 A 10 �0/�0 �0/�0 �5/�5 �5/�5 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30

3�-40 A 10 �0/�0 �5/�5 30/30 30/30 30/30 30/3050-63 A 10

iC60H y �5 A 15 �5/�5 �5/�5 36/36 36/36 40/40 40/40 40/40 40/40 40/40 40/40 40/40 40/403�-40 A 15 �5/�5 36/36 40/40 40/40 40/40 40/4050-63 A 15

iC60L y �5 A �5 36/36 36/36 40/40 40/40 40/40 40/40 40/40 40/40 40/40 40/403�-40 A �0 �5/�5 36/36 40/40 40/40 40/40 40/4050-63 A 15



25 36 50 70 100 150



Reinforced Breaking capacity (kA)iC60a y �5 A 6 15/15 15/15 15/15 15/15 15/15 15/15 �0/�0 �0/�0 �0/�0 �0/�0 �0/�0 �0/�0

3� to 50 A 6 10/10 10/10 10/10 10/10 10/10 10/10 15/15 15/15 15/15 15/15 15/15 15/1563 A 6 10/10 10/10 10/10 15/15 15/15 15/15

iC60N y 50 A 10 �0/�0 �0/�0 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�563 A 10 �0/�0 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5

iC60H y 40 A 15 �5/�5 �5/�5 36/36 36/36 40/40 40/40 40/40 40/40 40/40 40/40 40/40 40/4050 A 15 �5/�5 �5/�5 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/3063 A 15 �5/�5 30/30 30/30 30/30 30/30 30/30

iC60L y �5 A �5 36/36 36/36 40/40 40/40 40/40 40/40 40/40 40/40 40/40 40/403�-40 A �0 �5/�5 �5/�5 36/36 36/36 40/40 40/40 40/40 40/40 40/40 40/40 40/40 40/4050 A 15 �5/�5 �5/�5 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/30 30/3063 A 15 �5/�5 30/30 30/30 30/30 30/30 30/30




Cascading and enhanced discrimination Upstream: NSX250, Micrologic, TM-DDownstream: iC60, C120, NG125, NG160, NSC100, NSX100380-415 V



25 36 50 70 100 150

Trip unit Micrologic Micrologic Micrologic Micrologic Micrologic MicrologicRating (A) 250 250 250 250 250 250



3� to 63 A 6 10/10 10/10 10/10 10/10 10/10 10/10iC60N y 40 A 10 �0/�0 �5/�5 30/30 30/30 30/30 30/30

50-63 A 10 �0/�0 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5iC60H y 40 A 15 �5/�5 30/30 30/30 30/30 30/30 30/30

50-63 A 15 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5iC60L y �5 A �5 30/30 30/30 30/30 30/30 30/30

3�-40 A �0 �5/�5 30/30 30/30 30/30 30/30 30/3050-63 A 15 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5

C120N/H 10/15 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5 �5/�5NG125N �5 36/36 36/36 36/36 36/36 70/70NG125H 36 50/50 50/50 50/50 100/100NG125LNG125LMA

50 70/70 100/100 150/150



36 50 70 100 150

Trip unit TM-D TM-D TM-D TM-D TM-DRating (A) 160 200-

250160 200-

250160 200-

250160 200-

250160 200-250


Reinforced Breaking capacity (kA)NG160E 16 �5/�5 30/30 30/30 30/30 30/30NG160N �5 36/36 36/36 50/50 50/50 50/50NG160H 36 50/50 50/50 50/50 50/50NSC100N 16-100 A 18 36/36 50/50 50/50 50/50 50/50NSX100B, TM-D

y �5 A �5 36/36 36/36 50/50 50/50 50/5040-100 A �5 36/36 36/36 36/50 36/50 36/50

NSX100F, TM-D

y �5 A 36 50/50 70/70 100/100 150/15040-100 A 36 36/50 36/70 36/100 36/150

NSX100N, TM-D

y �5 A 50 70/70 100/100 150/15040-100 A 50 36/70 36/100 36/150

NSX100H, TM-D

y �5 A 70 100/100 150/15040-100 A 70 36/100 36/150

NSX100S, TM-D

y �5 A 100 150/15040-100 A 100 36/150

NSX100B Micrologic �5 36/36 36/36 36/50 36/50 36/50NSX100F Micrologic 36 36/50 36/70 36/100 36/150NSX100N Micrologic 50 36/70 36/100 36/150NSX100H Micrologic 70 36/100 36/150NSX100S Micrologic 100 36/150




Cascading and enhanced discrimination Upstream: NSX400-630, MicrologicDownstream: NG160, NSC100, NSX100-250380-415 V

UpstreamNSX400 NSX630F N H S L F N H S L


36 50 70 100 150 36 50 70 100 150

Trip unit Micrologic MicrologicRating (A) 400 400 400 400 400 630 630 630 630 630


Reinforced Breaking capacity (kA)NG160E 16 �5/�5 30/30 30/30 30/30 30/30 �5/�5 30/30 30/30 30/30 30/30NG160N �5 36/36 36/36 50/50 50/50 50/50 36/36 36/36 50/50 50/50 50/50NG160H 36 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50NSC100N 16-100 A 18 36/36 36/36 50/50 50/50 50/50 36/36 36/36 50/50 50/50 50/50NSX100B, TM-D

�5 36/36 36/36 50/50 50/50 50/50 36/36 36/36 50/50 50/50 50/50

NSX100F, TM-D

36 50/50 70/70 100/100 150/150 50/50 70/70 100/100 150/150

NSX100N, TM-D

50 70/70 100/100 150/150 70/70 100/100 150/150

NSX100H, TM-D

70 100/100 150/150 100/100 150/150

NSX100S, TM-D

100 150/150 150/150

NSX160B, TM-D

�5 36/36 36/36 50/50 50/50 50/50 36/36 36/36 50/50 50/50 50/50

NSX160F, TM-D

36 50/50 70/70 100/100 150/150 50/50 70/70 100/100 150/150

NSX160N, TM-D

50 70/70 100/100 150/150 70/70 100/100 150/150

NSX160H, TM-D

70 100/100 150/150 100/100 150/150

NSX160S, TM-D

100 150/150 150/150

NSX250B, TM-D

�5 36/36 36/36 50/50 50/50 50/50

NSX250F, TM-D

36 50/50 70/70 100/100 150/150

NSX250N, TM-D

50 70/70 100/100 150/150

NSX250H, TM-D

70 100/100 150/150

NSX250S, TM-D

100 150/150

NSX100B Micrologic �5 36/36 50/50 50/50 50/50 50/50 36/36 50/50 50/50 50/50 50/50NSX100F Micrologic 36 50/50 70/70 100/100 150/150 50/50 70/70 100/100 150/150NSX100N Micrologic 50 70/70 100/100 150/150 70/70 100/100 150/150NSX100H Micrologic 70 100/100 150/150 100/100 150/150NSX100S Micrologic 100 150/150 150/150NSX160B Micrologic �5 36/36 50/50 50/50 50/50 50/50 36/36 50/50 50/50 50/50 50/50NSX160F Micrologic 36 50/50 70/70 100/100 150/150 50/50 70/70 100/100 150/150NSX160N Micrologic 50 70/70 100/100 150/150 70/70 100/100 150/150NSX160H Micrologic 70 100/100 150/150 100/100 150/150NSX160S Micrologic 100 150/150 150/150NSX250B Micrologic �5 36/36 50/50 50/50 50/50 50/50NSX250F Micrologic 36 50/50 70/70 100/100 150/150NSX250N Micrologic 50 70/70 100/100 150/150NSX250H Micrologic 70 100/100 150/150NSX250S Micrologic 100 150/150




Cascading and enhanced discrimination Upstream: NSX250, MicrologicDownstream: NG160, NSC100, NSX100380-415 V



36 50 70 100 150

Trip unit Micrologic Micrologic Micrologic Micrologic MicrologicRating (A) 250 250 250 250 250


Reinforced Breaking capacity (kA)NG160E 16 �5/�5 30/30 30/30 30/30 30/30NG160N �5 36/36 36/36 50/50 50/50 50/50NG160H 36 50/50 50/50 50/50 50/50NSC100N 16-100 A 18 36/36 50/50 50/50 50/50 50/50NSX100B, TM-D

y �5 A �5 36/36 36/36 50/50 50/50 50/5040-100 A �5 36/36 36/36 36/50 36/50 36/50

NSX100F, TM-D

y �5 A 36 50/50 70/70 100/100 150/15040-100 A 36 36/50 36/70 36/100 36/150

NSX100N, TM-D

y �5 A 50 70/70 100/100 150/15040-100 A 50 36/70 36/100 36/150

NSX100H, TM-D

y �5 A 70 100/100 150/15040-100 A 70 36/100 36/150

NSX100S, TM-D

y �5 A 100 150/15040-100 A 100 36/150





Cascading and enhanced discrimination Upstream: NS800-1000-1600, MicrologicDownstream: NSX100-630380-415 V

UpstreamNS800 NS1000 NS1250 NS1600N H L LB N H L N H N H


50 70 150 200 50 70 150 50 70 50 70

Trip unit Micrologic Micrologic Micrologic MicrologicRating (A) 800 800 800 800 1000 1000 1000 1250 1250 1600 1600


Reinforced Breaking capacity (kA)NSX100B, TM-D/Micrologic

�5 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50

NSX100F, TM-D/Micrologic

36 50/50 70/70 150/150 150/150 50/50 70/70 150/150 50/50 70/70 50/50 70/70

NSX100N, TM-D/Micrologic

50 70/70 150/150 150/150 70/70 150/150 70/70 70/70

NSX100H, TM-D/Micrologic

70 150/150 150/150 150/150

NSX100S, TM-D/Micrologic

100 150/150 �00/�00 150/150

NSX100L, TM-D/ Micrologic

150 �00/�00

NSX160B, TM-D/ Micrologic

�5 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50


36 50/50 70/70 150/150 150/150 50/50 70/70 150/150 50/50 70/70 50/50 70/70


50 70/70 150/150 150/150 70/70 150/150 70/70 70/70


70 150/150 150/150 150/150


100 150/150 �00/�00 150/150

NSX160L, TM-D/Micrologic

150 �00/�00

NSX250B, TM-D/Micrologic

�5 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50

NSX250F, TM-D/ Micrologic

36 50/50 70/70 150/150 150/150 50/50 70/70 150/150 50/50 70/70 50/50 70/70


50 70/70 150/150 150/150 70/70 150/150 70/70 70/70

NSX250H, TM-D/ Micrologic

70 150/150 150/150 150/150


100 150/150 �00/�00 150/150


150 �00/�00

NSX400F Micrologic 36 50/50 70/70 10/150 10/150 50/50 70/70 15/150 50/50 70/70 50/50 70/70NSX400N Micrologic 50 70/70 10/150 10/150 70/70 15/150 70/70 70/70NSX400H Micrologic 70 10/150 10/150 15/150NSX400S Micrologic 100 10/150 10/�00 15/150NSX400L Micrologic 150 10/�00NSX630F Micrologic 36 50/50 65/70 10/150 50/50 65/70 50/50 65/70NSX630N Micrologic 50 65/70 10/150 65/70 65/70NSX630H Micrologic 70 10/150NSX630S Micrologic 100 10/150




Cascading and enhanced discrimination Upstream: NSX250, TM-D, MicrologicDownstream: NSX100440 V



35 50 65 90 130

Trip unit TM-D TM-D TM-D TM-D TM-DRating (A) 200 250 200 250 200 250 200 250 200 250


Reinforced Breaking capacity (kA)NSX100B, TM-D

y �5 A �0 35/35 35/35 35/35 35/35 50/50 50/50 50/50 50/50 50/50 50/5040-100 A �0 35/35 35/35 35/35 35/35 35/50 35/50 35/50 35/50 35/50 35/50

NSX100F, TM-D

y �5 A 35 35/35 35/35 65/65 65/65 90/90 90/90 130/130 130/13040-100 A 35 35/35 35/35 35/65 35/65 35/90 35/90 35/130 35/130

NSX100N, TM-D

y �5 A 50 65/65 65/65 90/90 90/90 130/130 130/13040-100 A 50 35/65 35/65 35/90 35/90 35/130 35/130

NSX100H, TM-D

y �5 A 65 90/90 90/90 130/130 130/13040-100 A 65 35/90 35/90 35/130 35/130

NSX100S, TM-D

y �5 A 90 130/130 130/13040-100 A 90 35/130 35/130

NSX100B Micrologic �0 35/35 35/35 35/35 35/35 35/50 35/50 35/50 35/50 35/50 35/50NSX100F Micrologic 35 35/50 35/50 35/50 35/50 35/50 35/50 35/50 35/50NSX100N Micrologic 50 35/65 35/65 35/90 35/90 35/130 35/130NSX100H Micrologic 65 35/90 35/90 35/130 35/130NSX100S Micrologic 90 35/130 35/130



35 50 65 90 130

Trip unit Micrologic Micrologic Micrologic Micrologic MicrologicRating (A) 250 250 250 250 250


Reinforced Breaking capacity (kA)NSX100B, TM-D

y �5 A �0 35/35 50/50 50/50 50/50 50/5040-100 A �0 35/35 35/50 35/50 35/50 35/50

NSX100F, TM-D

y �5 A 35 50/50 65/65 90/90 130/13040-100 A 35 35/50 35/65 35/90 35/130

NSX100N, TM-D

y �5 A 50 50/50 65/65 90/90 130/13040-100 A 50 35/50 35/65 35/90 35/130

NSX100H, TM-D

y �5 A 65 90/90 130/13040-100 A 65 35/90 35/130

NSX100S, TM-D

y �5 A 90 130/13040-100 A 90 35/130





Cascading and enhanced discrimination Upstream: NSX400-630, MicrologicDownstream: NSX100-250440 V

UpstreamNSX400 NSX630F N H S L F N H S L


30 42 65 90 130 30 42 65 90 130

Trip unit Micrologic MicrologicRating (A) 400 400 400 400 400 630 630 630 630 630


Reinforced Breaking capacity (kA)NSX100B Micrologic �0 30/30 30/30 50/50 50/50 50/50 30/30 30/30 50/50 50/50 50/50NSX100F Micrologic 35 4�/4� 65/65 90/90 130/130 4�/4� 65/65 90/90 130/130NSX100N Micrologic 50 65/65 90/90 130/130 65/65 90/90 130/130NSX100H Micrologic 65 90/90 130/130 90/90 130/130NSX100S Micrologic 90 130/130 130/130NSX160B Micrologic �0 30/30 30/30 50/50 50/50 50/50 30/30 30/30 50/50 50/50 50/50NSX160F Micrologic 35 4�/4� 65/65 90/90 130/130 4�/4� 65/65 90/90 130/130NSX160N Micrologic 50 65/65 90/90 130/130 65/65 90/90 130/130NSX160H Micrologic 65 90/90 130/130 90/90 130/130NSX160S Micrologic 90 130/130 130/130NSX250B Micrologic �0 35/35 30/30 50/50 50/50 50/50NSX250F Micrologic 35 4�/4� 65/65 90/90 130/130NSX250N Micrologic 50 65/65 90/90 130/130NSX250H Micrologic 65 90/90 130/130NSX250S Micrologic 90 130/130




Cascading and enhanced discrimination Upstream: NS800-1000-1600, MicrologicDownstream: NSX100-630440 V

UpstreamNS800 NS1000 NS1250 NS1600N H L LB N H L N H N H


50 65 130 200 50 65 130 50 65 50 65

Trip unit Micrologic Micrologic Micrologic MicrologicRating (A) 800 800 800 800 1000 1000 1000 1250 1250 1600 1600


Reinforced Breaking capacity (kA)NSX100B, TM-D/Micrologic

�0 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50


35 50/50 65/65 130/130 130/130 50/50 65/65 130/130 50/50 65/65 50/50 65/65


50 65/65 130/130 130/130 65/65 130/130 65/65 65/65


65 130/130 130/130 130/130


90 130/130 �00/�00 130/130


130 �00/�00


�0 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50


35 50/50 65/65 130/130 130/130 50/50 65/65 130/130 50/50 65/65 50/50 65/65


50 65/65 130/130 130/130 65/65 130/130 65/65 65/65


65 130/130 130/130 130/130


90 130/130 �00/�00 130/130


130 �00/�00


�0 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50 50/50


35 50/50 65/65 130/130 130/130 50/50 65/65 130/130 50/50 65/65 50/50 65/65


50 65/65 130/130 130/130 65/65 130/130 65/65 65/65


65 130/130 130/130 130/130


90 130/130 �00/�00 130/130


130 �00/�00

NSX400F Micrologic 30 50/50 65/65 10/130 10/�00 50/50 65/65 15/130 50/50 65/65 50/50 65/65NSX400N Micrologic 4� 65/65 10/130 10/�00 65/65 15/130 65/65 65/65NSX400H Micrologic 65 10/130 10/�00 15/130NSX400S Micrologic 90 10/130 10/�00 15/130NSX400L Micrologic 130 10/�00NSX630F Micrologic 30 50/50 65/65 10/130 50/50 65/65 50/50 65/65NSX630N Micrologic 4� 65/65 10/130 65/65 65/65NSX630H Micrologic 65 10/130NSX630S Micrologic 90 10/130



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