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Switch-Disconnector-FuseSwitch-Disconnector
Type FN
About us
Larsen & Toubro infuses engineering with imagination. The Company offers a wide range ofadvanced solutions in the field of Engineering, Construction, Electrical &Automation, Machinery andInformation Technology.
L&T Switchgear, a part of the Electrical & Automation business, is India's largest manufacturer of lowvoltage switchgear, with the scale, sophistication and range to meet global benchmarks. With overfive decades of experience in this field, the Company today enjoys a leadership position in the Indianmarket with a growing international presence.
It offers a complete range of products including powergear, controlgear, industrial automation,building electricals & automation, reactive power management, energy meters, and protectiverelays. These products conform to Indian and International Standards.
Switchgear Factory, Ahmednagar
Switchgear Factory, Mumbai
12
Com
pact
con
stru
ctio
n:To
ens
ure
light
wei
ght
low
ope
ratin
g to
rque
sw
itch
whi
ch s
aves
pan
elsp
ace.
Easy
to m
aint
ain
cont
acts
.P
hase
barr
iers
:In
terfa
ce b
arrie
rsar
e pr
ovid
ed to
elim
inat
eth
e po
ssib
ility
of
inte
rface
sho
rt ci
rcui
t.
The
Sw
itch-
Dis
conn
ecto
r-Fu
seun
its c
an b
e m
ount
ed a
t an
y an
gle
in a
ver
tical
pla
ne.
Fuse
s ar
e is
olat
ed fr
om b
oth
side
s.Th
is o
ffers
saf
ety
to o
pera
ting
pers
onne
l whi
le re
plac
ing
fuse
s.
Fuse
s re
mai
n st
atio
nary
dur
ing
switc
hing
ope
ratio
n.
Larg
e gr
ound
cle
aran
ceto
elim
inat
e po
ssib
ility
of
phas
e-gr
ound
flas
h ov
er.
The
term
inal
s ca
n be
shr
oude
d fo
r pr
otec
tion
agai
nst p
hase
-pha
se s
hort
circ
uit t
hrou
gh a
n ex
tern
al c
ondu
ctin
gpa
th a
nd a
lso
for p
rote
ctio
n ag
ains
tac
cide
ntal
hum
an c
onta
ct w
ith li
ve
term
inal
s.
Term
inal
shro
uds:
Con
tact
Sys
tem
:C
onta
ct s
yste
m is
QU
AD
BR
EA
K.T
here
are
no
. of p
aral
lel m
ovin
g co
ntac
ts p
er p
ole
per b
reak
. H
ence
, bet
ter a
rc q
uenc
hing
& m
ore
elec
trica
l lif
e of
con
tact
s. E
ach
pole
has
sep
arat
e br
idge
ca
rryi
ng th
e m
ovin
g co
ntac
ts, a
chie
ving
a h
igh
orde
r of i
nter
phas
e se
para
tion
& a
void
ing
phas
e-ph
ase
flash
ove
r.
SD
F In
teri
or in
She
et S
teel
Enc
losu
re:
Com
plet
e ra
nge
of S
DF
is a
lso
avai
labl
ein
attra
ctiv
e po
wde
r coa
ted
shee
t ste
el e
nclo
sure
s.FN
32
/ 63
in s
heet
ste
el e
nclo
sure
com
esfit
ted
with
gla
nd p
late
.
Feat
ures
of F
N s
erie
s:�
Com
pact
des
ign
save
s sp
ace
�E
lect
rody
nam
ic c
ompe
nsat
ion
�Q
uad
brea
k co
ntac
t sys
tem
�Fu
llA
C -
23 A
ratin
g fo
r the
com
plet
e ra
nge
�H
ighe
st fu
sed
shor
t circ
uit c
apac
ity�
Qui
ck m
ake
/ Qui
ck b
reak
/ P
ositi
ve b
reak
�C
lear
ON
/ O
FF in
dica
tor
�S
epar
ate
arci
ng /
Cur
rent
car
ryin
g zo
ne�
Hig
h cl
eara
nce
& c
reep
ages
�S
epar
ate
brid
ge fo
r eac
h po
le�
Max
imum
gro
und
clea
ranc
e�
Pha
se b
arrie
r & T
erm
inal
Shr
oud
as a
st
anda
rd a
cces
sory
�Fu
se s
tatio
nary
& is
olat
ed fr
om b
oth
side
s�
Dire
ct a
cces
s to
mou
ntin
g &
term
inal
scr
ews
�G
ener
ous
term
inal
cap
acity
�
Rep
lace
able
con
tact
s fo
r enh
ance
d lif
e�
Sui
tabl
e fo
r ver
tical
& h
oriz
onta
l orie
ntat
ion
�W
ide
rang
e of
Spa
res
& A
cces
sorie
s�
Han
dle
coup
ling
as p
er IS
862
3
The
hand
le c
oupl
ing
has
the
follo
win
g us
er-fr
iend
ly fe
atur
es.
Eas
y fix
ing
of h
andl
e on
pan
el d
oor
by tw
o sc
rew
s.
Doo
r int
erlo
ckfo
r saf
ety
of o
pera
ting
pers
onne
l whe
n sw
itch
is ‘O
N’.
The
inte
rlock
can
be
defe
ated
if re
quire
d.
Bui
lt-in
pad
lock
ing
arra
ngem
ent t
o lo
ck th
e un
it in
eith
er ‘O
N’ o
r ‘O
FF’
posi
tion.
The
hand
le c
oupl
ing
can
take
a
mis
mat
ch o
r ± 3
mm
in a
ll di
rect
ions
.Hig
h m
akin
g &
bre
akin
g ca
paci
tydu
e to
qua
d br
eak
cons
truct
ion.
Hig
h E
lect
rical
& M
echa
nica
l life
.
Cle
ar O
N /
OFF
indi
catio
nis
prov
ided
on
the
switc
h(b
y a
red
poin
ter).
Bui
lt-in
neu
tral
: S
witc
h-D
isco
nnec
tor-
Fuse
cons
ists
of a
n in
tegr
al n
eutra
l, m
akin
g th
e un
its s
uita
ble
for
3 ph
ase,
4 -
wire
app
licat
ion.
FN
32
/ 63
has
switc
hed
neut
ral w
hile
hig
her r
atin
gs
have
isol
able
neu
tral.
Mec
hani
sm:
This
mec
hani
sm is
fron
top
erat
ed q
uick
-mak
e /
quic
k-br
eak
and
inde
pend
ent
of s
peed
of o
pera
tion.
Sal
ient
Fea
ture
s of
SD
F
Term
inal
s:To
acc
omm
odat
e A
lum
iniu
m b
us b
ars.
34
Tech
nica
l Dat
a
Sw
itch-
Dis
conn
ecto
r-Fu
se U
nits
- Ty
pe F
NC
onfo
rms
to IE
C 6
0947
-3, I
S /
IEC
609
47-3
*
----
----
Pow
er fa
ctor
= 0
.45
as re
quire
d in
IS 1
3947
- (p
art 3
). #
--
----
- For
FN
125
to F
N 8
00 S
witc
hed
- Neu
tral i
s av
aila
ble
as a
cces
sory
.--
----
-**
Sui
tabl
e fo
r cyl
indr
ical
fuse
s.
BSDIN
Ord
erin
g In
form
atio
nO
rder
ing
Suf
fix O
OO
O fo
r all
* E
xam
ple:
FN
32
Inte
rior w
ith h
andl
e *
Ord
erin
g In
form
atio
n - S
K95
518O
OO
O
FN 6
3
SK
9542
1
SK
9561
3
SK
9565
1
FN 1
00
SK
9556
8
SK
9556
9
ST3
0287
SK
9557
0
Des
crip
tion
SD
F su
itabl
e fo
r D
IN F
uses
Inte
rior w
ith h
andl
e TP
N
Inte
rior i
n sh
eet s
teel
enc
losu
re
Inte
rior w
ith h
andl
e TP
SD
F S
uita
ble
for
BS
Fus
es
Inte
rior w
ith h
andl
e TP
N
FN 2
50
SK
9564
2
SK
9568
1
ST3
1731
SK
9568
2
FN 3
15
SK
9546
1
SK
9551
4
ST2
7897
SK
9559
0
FN 4
00
SK
9548
1
SK
9551
5
ST2
7898
SK
9559
1
FN 6
30
SK
9552
1
SK
9554
7
ST2
7899
SK
9559
2
FN 8
00
SK
9567
9
SK
9570
5
ST3
1732
FN 2
00
SK
9541
8
SK
9551
1
ST2
7895
SK
9558
8
FN 1
60
SK
9571
3
SK
9571
5
SK
9599
8
SK
9571
4
FN 1
25
SK
9500
1
SK
9500
5
ST2
7894
SK
9500
9
FN 8
00
3+#
Neu
tral
Isol
able
-20
to 5
0
415
690 8
56-6
0
800
800
8000
6400
1000
0
2 X
625
400
M 1
6 x
50
270
2, D
C-2
3 A
100
800
/ HN
/ 3
FN 6
30
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
630
630
6300
5040
1000
0
2 X
625
400
M 1
6 x
50
270
2, D
C-2
3 A
100
630
/ HN
/ 3
80
630
/ HQ
/ C
2
FN 4
00
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
630
630
6300
5040
1000
0
2 x
400
240
M12
x 4
0
240
2, D
C-2
3 A
100
400
/ HN
/ 2
80
400
/ HQ
/ B
4
FN 3
15
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
315
315
3150
2520
1000
0
400
240
M 1
0 x
30
145
2, D
C-2
3 A
100
315
/ HN
/ 1
80
315
/ HQ
/ B
3
FN 2
50
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
250
250
2500
2000
1000
00
240
120
M 1
0 x
30
115
2, D
C-2
3 A
100
250
/ HN
/ 1
80
250
/ HQ
/ B
2 &
B3
FN 2
00
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
200
200
2000
1600
1000
0
240
120
M 1
0 x
30
92
2, D
C-2
3 A
100
200
/ HN
/ 0
80
200
/ HQ
/ B
2
FN 1
60
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
160
160
1600
1280
1500
0
185
50
M 8
X M
20
57
2, D
C-2
3 A
100
160
/ HN
/ 00
80
160
/ HQ
/ A
4
FN 1
25
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
125
125
1250
1000
1500
0
95 50
M 8
x 2
0
57
2, D
C-2
3 A
100
125
/ HN
/ 00
80
125
/ HQ
/A4
Type
Des
igna
tion
No.
of P
oles
Neu
tral #
Ser
vice
tem
pera
ture
Rat
ed o
pera
tiona
l vol
tage
(U) e
Rat
ed in
sula
tion
volta
ge (U
) i
Rat
ed im
puls
e w
ithst
and
volta
ge (U
)im
p
Rat
ed fr
eque
ncy
0C
onve
ntio
nal e
nclo
sed
ther
mal
cur
rent
at 4
0C
(I)
the
Rat
ed o
pera
tiona
l cur
rent
(l) a
t AC
- 23
Ae
Rat
ed m
akin
g ca
paci
ty (4
36 V
, cos
Ø =
0.3
5)
Rat
ed b
reak
ing
capa
city
(436
V, c
osØ
= 0
.35)
Mec
hani
cal l
ife (O
pera
ting
cycl
es)
Term
inal
cap
acity
(mai
n)
Term
inal
cap
acity
(neu
tral)
Term
inal
scr
ew
Cap
acito
r dut
y - 4
15 V
, 50
- 60
Hz
DC
Rat
ing
at 2
20 V
DC
No.
of p
oles
in s
erie
s, u
tiliz
atio
n ca
tego
ry a
t rat
ed c
urre
nt
Sui
tabl
e L&
T fu
se
Rat
ed fu
sed
shor
t circ
uit c
urre
nt
Rat
ing
Rat
ed fu
sed
shor
t circ
uit c
urre
nt
Rat
ing
FN 1
00
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
100
100
1000
800
1500
0
95 50
M 8
x 2
0
45
2, D
C-2
3 A
100
100
/ HN
/ 00
80
100
/ HQ
/ A
3 &
A4
FN 6
3
3+N
eutra
l
Sw
itche
d
-20
to 5
0
415
690 8
50 -
60
63 63 630
504
1500
0
35 35
M 6
x 1
2
29
3, D
C-2
3 A
80**
63 /
HF
/ 14
x 51
80
63 /
HQ
/ A
1L
FN 3
2
3+N
eutra
l
Sw
itche
d
-20
to 5
0
415
690 8
50 -
60
32 32 320
256
1500
0
35 35
M 6
x 1
2
14
3, D
C-2
3 A
80**
32 /
HF
/ 14
x 51
80
32 /
HQ
/ A
1L
0 C V V kV Hz A A A A 2
mm mm
kVA
r
kA
A / T
ype
/ Siz
e kA
A / T
ype
/ Siz
e
FN 3
2
SK
9551
8
SK
9561
2
SK
9565
3
Tech
nica
l Dat
a
Sw
itch-
Dis
conn
ecto
r- T
ype
FNC
onfo
rms
to IE
C 6
0947
-3, I
S /
IEC
609
47-3
Type
Des
igna
tion
No.
of P
oles
Neu
tral
Ser
vice
tem
pera
ture
Rat
ed o
pera
tiona
l vol
tage
(U) e
Rat
ed in
sula
tion
volta
ge (U
) i
Rat
ed im
puls
e w
ithst
and
volta
ge (U
)im
p
Rat
ed fr
eque
ncy
0C
onve
ntio
nal e
nclo
sed
ther
mal
cur
rent
at 4
0C
(I)
the
Rat
ed o
pera
tiona
l cur
rent
(l) e
AC
20
A ut
iliza
tion
cate
gory
AC
21
A ut
iliza
tion
cate
gory
AC
22
A ut
iliza
tion
cate
gory
AC
23
A ut
iliza
tion
cate
gory
Rat
ed m
akin
g ca
paci
ty (4
36 V
, cos
Ø =
0.3
5)
Rat
ed b
reak
ing
capa
city
(436
V, c
osØ
= 0
.35)
Cap
acito
r dut
y - 4
15 V
50
- 60
Hz
Mec
hani
cal l
ife (O
pera
ting
cycl
es)
Term
inal
cap
acity
(mai
n)
Term
inal
cap
acity
(neu
tral)
Term
inal
scr
ew
Sho
rt ci
rcui
t with
stan
d cu
rren
t (w
ithou
t fus
es) f
or 1
sec
DC
Rat
ing
at 2
20 V
DC
No.
of p
oles
in s
erie
s, u
tiliz
atio
n ca
tego
ry a
t rat
ed c
urre
nt0 C V V kV Hz
A A A A A A A kVA
r 2m
m2
mm
mm
kA
FN 1
00
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
100
100
100
100
100
1000
800
45
1500
0
95 50
M 8
x 2
0
4
2, D
C-2
3 A
FN 1
25
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
125
125
125
125
125
1250
1000 57
1500
0
95 50
M 8
x 3
0
4
2, D
C-2
3 A
FN 3
2
3+N
eutra
l
Sw
itche
d
-20
to 5
0
415
690 8
50 -
60
32 32 32 32 32 320
256
14
1500
0
35 35
M 6
x 1
2
1.5
3, D
C-2
3 A
FN 6
3
3+N
eutra
l
Sw
itche
d
-20
to 5
0
415
690 8
50 -
60
63 63 63 63 63 630
504
29
1500
0
35 35
M 6
x 1
2
1.5
3, D
C-2
3 A
Ord
erin
g In
form
atio
nO
rder
ing
Suf
fix O
OO
O fo
r all
* E
xam
ple:
FN
32
Inte
rior w
ith h
andl
e *
Ord
erin
g In
form
atio
n - S
K95
541O
OO
O
FN 1
00
SK
9557
1
FN 1
25
SK
9540
5
Des
crip
tion
Inte
rior w
ith h
andl
e TP
N
FN 3
2
SK
9554
1
FN 4
00
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
400
400
400
400
400
4000
3200
175
1000
0
2 x
400
240
M 1
2 x
40
14
2, D
C-2
2 A
FN 3
15
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
315
315
315
315
315
3150
2520
145
1000
0
400
120
M 1
0 x
30
14
2, D
C-2
2 A
FN 2
50
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
250
250
250
250
250
2500
2000
115
1000
0
400
120
M 1
0 x
30
10
2, D
C-2
3 A
FN 2
00
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
200
200
200
200
200
2000
1600 92
1000
0
240
120
M 1
0 x
30
6
2, D
C-2
3 A
FN 8
00
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
800
800
800
800
800
8000
6400
270
1000
0
2 x
625
400
M 1
6 x
50
20
2, D
C-2
2 A
FN 6
30
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
630
630
630
630
630
6300
5040
270
1000
0
2 x
625
400
M 1
6 x
50
20
2, D
C-2
2 A
FN 1
000
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
1000
1000
1000
1000
1000
1000
0
8000
270
6000
2 x
625
400
M 1
6 x
50
25
2, D
C-2
2 B
FN 2
00
SK
9560
7
FN 2
50
SK
9560
8
FN 3
15
SK
9560
9
FN 4
00
SK
9561
0
FN 6
30
SK
9561
1
FN 8
00
SK
9555
1
FN 1
000
SK
9571
0
FN 1
000H
SK
9599
2
FN 6
3
SK
9554
0
56
FN 1
000H
3+N
eutra
l
Isol
able
-20
to 5
0
415
690 8
50 -
60
1000
1000
1000
1000
1000
1000
0
8000
6000
2 x
625
400
M 1
6 x
50
50
Shaft Extension Kit:
Fuse Puller:
Handle Coupling (typeA& B):
Auxiliary Contacts:
Shaft length can be increased with shaftextension kit.
A fuse puller is provided to facilitate easy &safe removal of fuses.
Irrespective of the switch orientation(vertical or horizontal), operation in any ofthe four quadrants is possible by selectingright handle coupling (Refer table on nextpage).
1 NO + 1 NC auxiliary contact is available asan accessory. This can be suitably wired inthe control circuit.�Rated operational current l (AC - 15) - 4 A�Rated operational voltage U - 415 Ve
e
Switched Neutral:
Terminal Shroud:
Mechanical Interlock Kit:
Castell Interlock:
In FN 32 / 63 Switched-Neutral pole is anintegral part of the Switch-Disconnector-Fuse. For higher ratings, a double break,site-fitted switched neutral pole can beprovided. This is operated by the mainmechanism.
The terminals can be shrouded forprotection against phase-short circuitthrough an external conducting path andagainst accidental human contact with liveterminals.
Two Switch-Disconnector-Fuse units canbe interlocked by mechanical interlock kit. After interlocking, the following threepositions are possible:�SDFU 1 in ON position SDFU 2 in OFF
position�SDFU 2 in ON position SDFU 1 in OFF
position�Both SDFUs in OFF position hence two
mechanically interlocked SDFUs canbe used as a changeover switch
Switch-Disconnector-Fuse units can belocked on OFF position with help of castellinterlock. Castell interlock can also beused to interlock two SDF units. (Differentvariety of locks are available).
SparesMoving Contacts:
Front Housing assembly:
Moving contacts are available for rangesFN 100 to FN 800. One set of movingcontact spare contains, spring, guide &moving contact.
Complete front housing assembly isavailable from FN 100 to FN 800.
7
Wide range of spares & accessories are available for Switch-Disconnector-Fuse units type FN.
Accessories
Spares & Accessories
Ordering Suffix - 0000 for all.
SK91335
SK95516
SK91329
Moving Contact
Front Housing Assembly
Terminal Shroud Kit
Switched Neutral Kit
Aux. Contact (1 NO + 1 NC)
Handle Coupling (Type - A)
Handle Coupling (Type - B)
Handle Coupling (Type - CE)
Fuse Puller
Shaft Extension Kit
Mechanical Interlock Kit
Castell Lock (Type A-Type D)
Not Available
Not Available
SK91190
Built-in
SK91302
SK91257
SK91277
SK91337
SK91185
Not Available
Not Available
Not Available
SK91373
ST31677 ST31678
SK91258
SK91278
SK95600
SK95232
SK00333 - SK00336
SK91376
ST31681
SK91377
ST31682
SK91378
ST31683 ST31730
SK91330
SK91259
SK91279
SK91331
SK95545
SK00345 - SK00348
Versions FN 32 / 63 FN 125/160FN 100 FN 200 FN 250 FN 400 FN 630
SK91375
ST31729
SK91374
ST31679
Spares & Accessories for FN Range - Ordering Information
Acc
esso
ries
Spa
res
SK91347
SK95546
Not Available
SF90126
FN 315 FN 800 FN 1000/1000H
SK91379 Not Available
Not Available
SK91346
SK95517
SK91137
SK95233
SK91328
Seen from front of the door
Selection of Handle
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
OR
OR
OR
OR
OR
OR
OR
OR
A
B
B
A
A
B
B
A
Sr.No.
1
2
3
4
5
6
7
8
Handle(off)
Position
OperatingQuadrant
(hand)
SwitchOrientation
DoorCut-out
HandleCoupling
Type
Note : Arrow ( ) Type A : supplied as standard with all S-D-FsType B : supplied on request
indicates position of Interlock Defeat Key
8
Switch-Disconnector-Fuse (suitable for DIN type fuses)
Note : All dimensions are in mm.
SDF - FN 32 / 63
Drilling details FN 32 / 63
9
Assembly of Handle Coupling on Door - FN 32 / 63
Terminal Shroud(Optional Accessory)
A1
5
150
6 SQ
35
83.5
29.6
128
113.255
5
AuxiliaryContact Block(OptionalAccessory)
3195 75 79
15.1 27 27
2 Mounting HolesFor M4 Screws
16
29
N
N
Switch inOFF Position
CheeseHeadScrews
Door ThicknessMax. 2 mm
Hinge
Cle
arIn
side
ofth
eC
ubic
le
150
±3
100 MIN
47
40
SQ. 65
Drilling details on doorfor mounting handle couplingseen from front of the door
Drilling details on base platefor mounting switchseen from front of the door
40 ± 0.25
5
75
40±
0.25
2 Holes Ø4 ± 0.1
2 HolesSuitable For M4 Screws
For M3.5 Screws
Holes Ø32 ± 0.25
Operating Shaft Center
Mismatch ± 3 Permissible
55
Overall Dimensions
Switch-Disconnector-Fuse (suitable for DIN type fuses)
Note : All dimensions are in mm.
170
77.5
Terminal Shroud
216 (with Aux. Contact Block)
Aux. Contact Block(Optional Accessory)(Optional Accessory)
726
125
75
M5 ScrewEarthing 20
39.6 48 47 4712
2
6994
142 15
9
164
B Ø9
225
2041607
M 6 Screw
136
A
10
FN 200 / 250
Type
FN 100 / 125
FN 160
A
154
164
B
20
25
10
FN12
5
Phase Barrier
247 (with Aux. Contact Block)
B11
1.5
7
108.
521
019
018
017
0
5656553029
39
83.5
A 2.5
96
C D
12.5 24.7
43.2
109
238188
PhaseBarrier
(Optional Accessory)Aux. Contact Block
Terminal Shroud(Optional Accessory)
M8 Bolt
M5 ScrewEarthing
M10 Bolt
Ø12.5 Hole
Type
FN 200
FN 250
A
190
206
B
162.5
108.5
C
178
194.5
D
187.5
204
FN 100 / 125 / 160
Assembly of Handle Coupling on Door FN 100 / 125 / 160 / 200 / 250
Note : All dimensions are in mm.
Drilling details FN 100 / 125 / 160 / 200 / 250
B
A
D4 HolesSuitable For M6 Screws
C
2 Holes Ø4 ± 0.1For M3.5 Screws
Holes Ø50 ± 0.25
60 ± 0.25
60±
0.25
Operating Shaft CenterMismatch ±3 Permissible
Drilling details on doorfor mounting handle couplingseen from front of the door
Drilling details on base platefor mounting switchseen from front of the door
11
160
150 MIN.
SQ. 90
Push here to defeat interlock
Switch in off position
Padlock, Clamp Ø5 To Ø8.5 mm
Hinge
Cheese Head Screw
Door thicknessMax. 2 mm
Cle
arin
side
ofth
ecu
bicl
eA
±3
54.5 74
.4
Overall Dimensions
Dimension
A
FN 100 / 125 / 160
180
FN 200
200
FN 250
216
Type
FN 100 / 125 / 160
FN 200
FN 250
A
26
43.2
43.2
B
22
24.7
24.7
C
160
188
188
D
125
170
170
Note : All dimensions are in mm.
Switch-Disconnector-Fuse (suitable for DIN type fuses)
Phase Barrier
3
250
240
146
A 137
Aux. Contact Block
206
238
B
17.5
Type
FN 315
FN 400
A
103
102
B
220
228
C
M10
M12
FN 630 / 800
12
407060.5
M5 ScrewEarthing 43
M10 Bolt 70
17 24.5215280
5
9
113
200
195
175
174
291 (with Aux. Contact Block)
Bolt'c'Terminal Shroud
16.3
45.7
146
5
Aux. Contact Block
FUSE
24.5
147
260
270
4
8
137
105
261
250.
522
5.5
Phase Barrier
347 (with Aux. Contact Block)
Terminal Shroud
33627117 24.5
13.3 5 5
9
117.
5
45.7
182 21
819
518
217
5
M5 Screw-Earthing
M12 BoltM16 Bolt48 60
71 90
FN 315 / 400
Type
FN 630
FN 800
A
6
8
Note : All dimensions are in mm.
Assembly of Handle Coupling on Door FN 315 / 400 / 630 / 800
Drilling details on doorfor mounting handle couplingseen from front of the door
Drilling details on base platefor mounting switchseen from front of the door
Hole Ø50 ± 0.25
Operating Shaft CenterMismatch ± 3 Permissible
60 ± 0.25
60±
0.25 45
.7
175
24.5 A
4 Holes SuitableFor M8 Screws
2 Holes Ø4 ± 0.1For M3.5 Screws
230
250
±3
OSQ. 90
54.5 74
.4
Type
FN 315 / FN 400
FN 630 / FN 800
A
250
270
Type
FN 315 / FN 400
FN 630 / FN 800
A
215
271
Drilling details FN 315 / 400 / 630 / 800
13
Padlock Clamp F 5 To F 8.5 mm
Cheese head screw
Push here to defeat interlock
Switch In Off Position
Door ThicknessMax. 2 mm
Cle
arin
side
ofth
ecu
bicl
e
Hinge
150 min
Overall Dimensions
Note : All dimensions are in mm.
FN in Sheet Steel Enclosure
C
F
J H
G
A
O 4 Holes Ø 6.5
B E L
K
I
O
14
FN 32 / 63
FN 100 / 125 / 160
FN 200
FN 250
FN 315 / 400
FN 630 / 800
A
245
288
335
335
365
421
B
238
265
265
265
265
285
C
196
245
265
281
315
337
D
230
273
320
320
350
406
E
226
253
253
253
253
273
F
153
183
203
219
253
273
G
190
233
280
280
310
366
H
73
104
124
124
185
185
I
210
253
300
300
330
386
J
80
110
130
130
191
191
K
170
213
260
260
300
346
L
165
193
193
193
203
223
Extreme overalldimension
Basic enclosuredimension
Cutout forCables
Gl and Plate mountingdimension
Enclosuremountingdimension
Type
180
170
77.5
2
Ø 37 MaxFuse Size A4According toIS 13703
129
157.
569
3
Aux. Contact Block
1.2 227
526
125 75
M5 ScrewEarthing
M6 Screw20
M6 39.6
48 47 47
94 136
154
122
Terminal Shroud
12204160
20 9
Switch-Disconnector-Fuse (suitable for BS type fuses)
FN 100 / 125
Note : All dimensions are in mm.
6 SQ.
5
150
35
83.5
113.229.6 55
5 2 Mounting HolesFor M4 Screws
7955.5
27272915.116
31
Term
inal
Shr
oud
(opt
iona
lAcc
esso
ry)
95 75
111
Fuse Size B2According ToIS13703
M10 Bolt
DC
180210
Phase Barrier
%C42 Max.
A B96
2.5
111.
517
9(M
ax.)
E
Aux. Contact Block
247 (with Aux. Contact Block)238
18824.7
12.55M8 Bolt
43.2
109
M5 EarthingScrew
29
39 5530
56 56
170
190
108.
5
7
Terminal Shroud
DIM
FN 200
FN 250
A
200
216
B
190
206
C
4
5
D
83.5
84.5
E
187.5
204
Fuse
200 A
250 A
FN 200 / 250
FN 32 / 63
15
Overall Dimensions
16
Switch-Disconnector-Fuse (suitable for BS type fuses)
FN 630
Note : All dimensions are in mm.
250
240
146
3Phase Barrier
O66 Max.
137
B(m
ax.)
Ref
erTa
ble
238
Aux. Contact Block
291(with Aux. Contact Block)27521517 24.3
5 Terminal Shroud 5
45.7
16.3
146
9
113
175
195
707040
60.543
M10 Bolt
M5 ScrewEarthing
Fuse SizeAccording to Is 13703(refer Table)
Bolt-c(refer Table)
111
A(r
efer
Tabl
e)
174200
Phase Barrier
270
260
O77 Max.
M16 Bolt
249
(max
.)26
1
Aux. Contact Block
137
347 (with Aux. Contact Block)33027117 24.5
13.35
45.7
182
M5 ScrewEarthing
M12 Bolt
4971 90 60 90
175
195
117.
5
9
5Terminal Shroud
Fuse Size C2According To
Is 13703
21225.425.4 133
4
147
103
6
182218
FN 315 / 400
(Fuse links with cylindrical contact caps)�Conforms to IEC60269 / IS13703�Low watt loss - Saves power�Low let through energy�High breaking capacity - 80 kA�Rated voltage - 415 V�Immediate fault indication through red pop up indicator�Lower power loss in our fuses result in cooler running of
associated products
17
HRC Fuses - Cylindrical
Fuse Links Type HF
Ordering Details
Fuse-pulling handle should be used for safe and easy removal of fuse links
Suitable fuse - pulling handle for type HF : SK91185
Fuse Rating (A) Cat. Nos.
2
4
6
8
10
16
20
25
32
40
50
63
SF90144
SF90145
SF90146
SF90147
SF90148
SF90150
SF90151
SF90152
SF90142
SF90143
SF90158
SF90159
Size
14 x 51
Rated watt loss
0.6
0.6
1.1
1.2
1.0
2.4
2.4
3.2
5.0
5.0
5.0
7.4
(Fuse links with blade contacts)�
�Low watt loss - Saves power�Cooler running of associated products�Low let through energy�High breaking capacity - 100 kA�Immediate fault indication�Rated voltage - 415 V
Conforms to IEC60269 / IS13703
18
Fuse Links Type HN
Fuse-pulling handle should be used for safe and easy removal of fuse links Suitable fuse - pulling handle for type HN : SF90126
HRC Fuses - Blade / Knife type
wNe
63
80
100
125
63
80
100
125
160
80
100
125
160
200
125
160
200
250
315
200
250
315
400
315
400
500
630
800
SF94940
SF94941
SF94942
SF94946
SF94027
SF94028
SF94029
SF94030
SF94939
SF94128
SF94129
SF94130
SF94131
SF94132
SF94230
SF94231
SF94232
SF94233
SF94234
SF94332
SF94333
SF94334
SF94335
SF94434
SF94435
SF94436
SF94437
SF94938
5.3
6.2
7
9.5
5.7
6.9
7.5
9.8
12
8.3
9.1
11.3
12.7
14.5
10.3
12.3
14.3
17.3
25.5
14.1
16.9
20.2
24.9
20.5
26.7
36.1
42.2
48
Size 000
Size 00
Size 0
Size 1
Size 2
Size 3
100 Amp, Fuse-7.5 W
100 Amp, Fuse-7.5 W
160 Amp, Fuse-16 W
250 Amp, Fuse-23 W
400 Amp, Fuse-34 W
630 Amp, Fuse-48 W
Size of thefuse link
Rating(A)
Cat. Nos. Ratedwatt loss
Watt loss limitsas per IS 13703
Type HG
Type HQ
(Fuse links for bolted connections)�
�Low watt loss�Low let through energy�High breaking capacity - 80kA�Rated voltage - 415V
Conforms to IEC60269 / IS13703
19
HRC Fuses - Bolted
Fuse Links Type HG and HQ
246
1016202532202532506346
101620253235506380
100125 16080
100125125160200250315 355 400400500630630
Size of the fuse
Rating(A)
Cat. Nos.
0.30.51.21.41.82.22.93.02.43.13.44.04.70.81.41.52.02.83.84.44.56.26.89.19.514-
9.210.516.015.019.520.52832343838505558
Rated WattLoss
ST30736ST30737ST30738ST30739ST30740ST30741ST30742ST30743ST34527ST34528ST34529ST35827ST35828ST30747ST30748ST30749ST30750ST30751ST30752ST30753ST30759ST30760ST30761ST30767ST30768ST30769ST35829ST30774ST30775ST30776ST30777ST30778ST30779ST30781ST30782ST30783ST30784ST30785ST30786ST30787ST30788
A1
A1L
A2
A3
A4
B1
B2
B3
B4
C2
C3
ST30725ST30726ST30727ST30728ST30729ST30730ST30731ST30732
0.30.51.21.41.82.22.93.0
246
1016202532
Rating(A)
F1F1F1F1F1F1F1F1
Size Cat. Nos. RatedWatt Loss
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SP 50452 R1 100812
Larsen & Toubro Limited Electrical Standard ProductsPowai Campus, Mumbai 400 072Customer Interaction Center (CIC)BSNL / MTNL (toll free) : 1800 233 5858Reliance (toll free) : 1800 200 5858Tel : 022 6774 5858, Fax : 022 6774 5859E-mail : [email protected] : www.LNTEBG.com
