Switch Disconnector Fuse
(Cubicle Fuse Switch Unit)
1
Wide Range of Choice : Switch Disconnector Fuse from 32A to 800A in Bolted/Din type. Switch
Disconnectors/Isolators from 100A to 800A
2
CPRI Tested/High Short Circuit Breaking Capacity : Tested at CPRI for 80KA, utilisation category
AC 23A and conforms to IS / IEC : 60947 (P3)
3
Two way Isolation : Fuselinks remain isolated from both incoming and outgoing circuits, when the
switch is in OFF position
4
The unique roller contact system and quick switching mechanism prevents contacts from welding
at extreme fault currents
Switch Disconnector Fuse (Cubicle Fuse Switch Unit)
STANDARD presents state-of-the-art designed Switch Disconnector
Fuse for various power distribution applications giving trouble free
reliable performance.
Features
•
•
•
Wide Range of Choice : Switch Disconnector Fuse from 32A to
800A in Bolted/Din type. Switch Disconnectors/Isolators from 100A
to 800A.
CPRI Tested/High Short Circuit Breaking Capacity : Tested at CPRI
for 80KA, utilisation category AC 23A and conforms to IS / IEC :
60947 -1 & 3.
Two way Isolation : Fuselinks remain isolated from both incoming
and outgoing circuits, when the switch is in OFF position.
•
•
•
•
•
Flexibility of Mounting : Can be mounted in Vertical or Horizontal
position.
The unique roller contact system and quick switching mechanism
prevents contacts from welding at extreme fault currents.
Available with Isolable Neutral and Switched Neutral.
Facility of auxiliary contacts 2NO+2NC on request.
Padlock, door interlock and defeat mechanism interlock provided.
Range
Specification
32A to 800A with Bolted / Din type fuse links
IS / IEC : 60947-1 & 3
Execution
Isolator Switch Range
TPN & TPSN
100A to 800A
124
Switch Disconnector Fuse (Cubicle Fuse Switch Unit)
Construction
The contact system has dual advantage of knife contacts & roller
contacts. The moving contact system consists of four spring loaded,
silver plated Cu. roller held in position by a steel retainer which allows
the rollers to rotate individually.
The snap action of the switch makes the contact movement independent
of the operating speed of the handle to prevent indefinite positioning.
The uniform contact pressure ensures excellent behavior of the switch
under overload & short circuit conditions.
The moulded parts of the switch are in accordance with existing
standards concerning creepage, inflammability and arc resistance.
Design
The compact design of the Switch Disconnector Fuse reduces space
requirement on panel boards. This also results in considerable economy
on bus bars, wiring and sheet steel fabrication.
High making & breaking capacity
High making and breaking capacity is achieved primarily
by dividing the make/break process between four
breaking points per phase. This results in distribution
of the breaking load to the effect that arcing time and
contact burning are reduced and the contact life is
increased.
Isolable neutral
125
Switched neutral
Auxiliary switch
Switch Disconnector Fuse (Cubicle Fuse Switch Unit)
Switch disconnector fuse TPN (Suitable for bolted fuses)
Cat No.
Rating (Amps.)
Open Execution
Open Execution with Fuse
With Sheet Steel Enclosure
With Fuse With Sheet Steel
Enclosure
32
ISFDTO4032
ISFDTF4032
ISFDTE4032
ISFDTW4032
63
ISFDTO4063
ISFDTF4063
ISFDTE4063
ISFDTW4063
100
ISFCTO4100
ISFCTF4100
ISFCTE4100
ISFCTW4100
125
ISFCTO4125
ISFCTF4125
ISFCTE4125
ISFCTW4125
160
ISFCTO4160
ISFCTF4160
ISFCTE4160
ISFCTW4160
200
ISFCTO4200
ISFCTF4200
ISFCTE4200
ISFCTW4200
250
ISFCTO4250
ISFCTF4250
ISFCTE4250
ISFCTW4250
320
ISFCTO4320
ISFCTF4320
ISFCTE4320
ISFCTW4320
400
ISFCTO4400
ISFCTF4400
ISFCTE4400
ISFCTW4400
630
ISFCTO4630
ISFCTF4630
ISFCTE4630
ISFCTW4630
800
ISFCTO4800
ISFCTF4800
ISFCTE4800
ISFCTW4800
Switch disconnector fuse TPN (Suitable for din fuses)
Rating (Amps.)
Cat No.
Open Execution
With Sheet Steel Enclosure
With Fuse With Sheet Steel Enclosure
32
ISFETO4032
ISFETE4032
ISFETW4032
63
ISFETO4063
ISFETE4063
ISFETW4063
100
ISFETO4100
ISFETE4100
ISFETW4100
125
ISFETO4125
ISFETE4125
ISFETW4125
160
ISFETO4160
ISFETE4160
ISFETW4160
200
ISFETO4200
ISFETE4200
ISFETW4200
250
ISFETO4250
ISFETE4250
ISFETW4250
320
ISFETO4320
ISFETE4320
ISFETW4320
400
ISFETO4400
ISFETE4400
ISFETW4400
630
ISFETO4630
ISFETE4630
ISFETW4630
800
ISFETO4800
ISFETE4800
ISFETW4800
126
Switch Disconnector Fuse (Cubicle Fuse Switch Unit)
Switch disconnector fuse three pole & switched neutral (Suitable for bolted fuses)
Rating (Amps.)
Cat No.
Open Execution
With Sheet Steel Enclosure
With Fuse With Sheet Steel Enclosure
32
ISFCNO4032
ISFCNE4032
ISFCNW4032
63
ISFCNO4063
ISFCNE4063
ISFCNW4063
100
ISFCNO4100
ISFCNE4100
ISFCNW4100
125
ISFCNO4125
ISFCNE4125
ISFCNW4125
160
ISFCNO4160
ISFCNE4160
ISFCNW4160
200
ISFCNO4200
ISFCNE4200
ISFCNW4200
250
ISFCNO4250
ISFCNE4250
ISFCNW4250
320
ISFCNO4320
ISFCNE4320
ISFCNW4320
400
ISFCNO4400
ISFCNE4400
ISFCNW4400
630
ISFCNO4630
ISFCNE4630
ISFCNW4630
800
ISFCNO4800
ISFCNE4800
ISFCNW4800
Switch disconnector fuse three pole & switched neutral (Suitable for din fuses)
Rating (Amps.)
Cat No.
Open Execution
With Sheet Steel Enclosure
With Fuse With Sheet Steel Enclosure
32
ISFENO4032
ISFENE4032
ISFENW4032
63
ISFENO4063
ISFENE4063
ISFENW4063
100
ISFENO4100
ISFENE4100
ISFENW4100
125
ISFENO4125
ISFENE4125
ISFENW4125
160
ISFENO4160
ISFENE4160
ISFENW4160
200
ISFENO4200
ISFENE4200
ISFENW4200
250
ISFENO4250
ISFENE4250
ISFENW4250
320
ISFENO4320
ISFENE4320
ISFENW4320
400
ISFENO4400
ISFENE4400
ISFENW4400
630
ISFENO4630
ISFENE4630
ISFENW4630
800
ISFENO4800
ISFENE4800
ISFENW4800
127
128
125
4.2
Nm
-
-
7.5
15x4
1000
10000
-
7.5
20x4
1000
10000
300
200
400
4
-
-
200
80
80
100
-
90
1200
1600
AC
23A
200
415
660
3
CISF
200
TPN
-
7.5
25x6
1000
10000
1000
400
400
30
-
-
400
80
80
198
-
200
2400
3200
AC
23A
400
415
660
3
CISF
400
TPN
-
7.5
30x6
1000
10000
1000
630
400
-
-
-
630
80
80
260
-
335
3780
5040
AC
23A
630
415
660
3
CISF
630
TPN
-
16
40x6
500
5000
2000
800
400
-
-
-
800
80
80
374
-
400
4800
6400
AC
23A
800
415
660
3
CISF
800
TPN
-
4.2
15x2
1500
10000
100
32
400
1
A2
0
32
80
80
15
-
17
256
320
AC
23A
32
415
660
3
FSHF
32
TPN
-
4.2
-
4.8
20x2.6
1000
10000
300
125
400
-
A4
0
125
80
80
58
-
59
1000
1250
AC
23A
125
415
660
3

7.5
20x4
1000
10000
300
125
400
5
B1
0
125
80
80
58
-
59
1000
1250
AC
23A
125
415
660
3
FSHF 125
TPN Compact
Regular
^ STF Fuse of 33f
15x2
1500
10000
150
63
400
2
A3
0
63
80
80
28
-
30
504
630
AC
23A
63
415
660
3
FSHF
63
TPN
* Use fuse of reputed make only + Category AC22 has Cos f-0.65 # For Category AC 22 Cos f-0.8
Our Switch Disconnector Fuse 32A to 800A can be used for 400 Cycles/Sec. Upto 500 Volts.
IS / IEC : 60947 (P3)
Ref. Specification IS :
60947(P3)/IEC : 947 (P3)
Operation Torque
15x2
mm
Terminal Size
1500
10000
Operation
300
100
150
Operation
AMP
Breaking
Mechanical Life
AMP
Rated Current
400
5
-
-
125
80
80
58
-
59
800
1000
400
2
-
Cos f-0.65 #
V
Rated Voltage
.(RMS)
KA
for 1 Sec
Withstand Capacity
-
Size
Size
Knife Type
Bolted Type
Amp.
80
100
(RMS)
Capacity at 415V
Rating
80
KA
Circuit with Stand
KA
Circuit Making
30
(RMS)
KVAR
Rating at 415V)
-
45
Capacity at 415V
KW
KW
415V, 50Hz
415V, 50Hz
800
1000
Amp.
Amp.
Category of Utilization
50Hz, COS f-0.35+
AC
23A
50Hz, COS f-0.35+
125
415
660
3
CISF
125
TPN
AC
23A
Amp.
415
660
3
CISF
100
TPN
100
Rated Current
V
V
Voltage, Ui
Voltage, Ue
Number of Pole with
Isolating/Switched Neutral
Ordering Code
Technical data
-
7.5
20x4
1000
10000
300
160
400
5
B1
0
160
80
80
75
-
80
1000
1600
AC
23A
160
415
660
3
FSHF
160
TPN
-
7.5
25x4
1000
10000
300
200
400
5
^B2
-
200
80
80
99
-
100
1600
2000
AC
23A
200
415
660
3
FSHF
200
TPN

7.5
25x4
1000
10000
1000
250
400
5
B3
1
250
80
80
124
-
132
2000
2500
AC
23A
250
415
660
3
FSHF
250
TPN

7.5
25x4
1000
10000
1000
320
400
10
B3
2
320
80
80
150
-
160
2560
3200
AC
23A
320
415
660
3
FSHF
320
TPN

7.5
25x6
1000
10000
1000
400
400
30
B4
2
400
80
80
198
-
200
3200
4000
AC
23A
400
415
660
3
FSHF
400
TPN

16
40x6
1000
5000
2000
630
400
-
C3
3
630
80
80
294
-
335
5040
6300
AC
23A
630
415
660
3
FSHF
630
TPN
-
16
40x8
500
5000
2000
800
400
-
*
*
800
80
80
374
-
400
6400
8000
AC
23A
800
415
660
3
FSHF
800
TPN
Switch Disconnector Fuse (Cubicle Fuse Switch Unit)
Switch Disconnector Fuse (Cubicle Fuse Switch Unit)
Selection of HBC fuse links
Rating of
Switch
Amps.
Size
as per
IS : 13703
HBC
Fuse
Type
6 10 16 20 25 32 50 63 80 100 125 160 200 250
32
A2
STIA
00
SB00 A2
STIA
A3
STIS
00
SB00 125
A4
STCP
(Compact)
00
SB00 125
B1
STC
00
SB00 00
SB00 B2
*STF
200
B2
*STF
250
B1
STC
B2
STF
B3
STKF
1
SB1
B1
STC
B2
STF
B3
STKF
1
SB1
2
SB2
B1
STC
B2
STF
B3
STKF
B4
STMF
1
SB1
2
SB2
63
160
320
400
630
800
C3
SB1
2
SB2
3
SB3
C3
STLM
300/
315
350 400 425 500 630 800A
129
Use fuse of Reputed make only
STLM/
STTM
1
* STF Fuse of 33
Range of HBC Fuses
Switch Disconnector Fuse (Cubicle Fuse Switch Unit)
Auxilary contact
Frame Size
Rating (Amps.)
Aux. Switch
(1 NO + 1 NC)
(2 NO + 2 NC)
125
125
Aux. Switch
(1 NO + 1 NC)
(2 NO + 2 NC)
250
250
Aux. Switch
(1 NO + 1 NC)
(2 NO + 2 NC)
400
400
Aux. Switch
(1 NO + 1 NC)
(2 NO + 2 NC)
630
630
Switch disconnector / Load break (Cubicle type)
Cat No.
Rating (Amps.)
Open Execution
With Sheet Steel Enclosure
100
ISICTO4100
–
125
ISICTO4125
ISICTW4125
200
ISICTO4200
ISICTW4200
250
ISICTO4250
–
400
ISICTO4400
ISICTW4400
630
ISICTO4630
ISICTW4630
Switch disconnector fuse (Compact design)
Rating Amps.
Type
A
B
C
D
E
160
32/63/125
FSHF 32/63/125 TPN
200
250
180
230
160/200
FSHF 125/160/200 TPN
305
335
365
210
220
250/320/400
FSHF 250/320/400 TPN
390
420
450
280
262
630/800
FSHF 630/800 TPN
420
450
480
375
290
100
CISF 100 TPN
158
230
115
175
195
125/200
CISF 125/200 TPN
305
335
365
210
220
400/630
CISF 400/630 TPN
390
420
450
280
262
800/1000
CISF 800/1000 TPN
420
450
480
375
290
[Fixing center]
D
C
General Tolerance ± 1.5
A
[Fixing center]
E
B
130
Switch Disconnector Fuse (Cubicle Fuse Switch Unit)
Dimensional details (in mm) - 32/63/100/125A Execution TPN/TPSN
Rating
Amps.
32A to
63A
Type
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
T
2
TPN
134
60
34
75
117
182
150-225 86.5 40
137
74
2
30
9
32
12
38
TPSN
168
60
34
75
117
216
150-225 86.5 40
137
74
2
30
9
32
12
38
2
100A to TPN
125A TPSN
134
60
34
107
156
182
150-225 86.5 40
137
74
2
30
9
32
20
38
2
168
60
34
107
156
216
150-225 86.5 40
137
74
2
30
9
32
20
38
2
Dimensional details (in mm) - Open execution TPN
S.
No.
Rating
Execution
Amps.
Type
A
B
C
D
E
F
G
H
K
M
N
O
P
S
T
Bolt
1
125
TPN
FSHF 125 TPN
244 242.5 131
162
157
26
39.5
-
44
43
222
20
4
125
50
M8
2
160
TPN
FSHF 160 TPN
244 242.5 131
162
157
26
39.5
-
44
43
222
20
4
125
50
M8
3
200
TPN
FSHF 200 TPN
244 242.5 131
162
157
26
39.5
-
44
43
222
25
4
125
50
M8
4
250
TPN
FSHF 250 TPN
311
250
183
224
212
26
65.5
15
70
32.5 264
25
4
170
50
M10
5
320
TPN
FSHF 320 TPN
311
250
183
224
212
26
65.5
15
70
32.5 264
25
6
170
50
M10
6
400
TPN
FSHF 400 TPN
311
250
183
224
212
26
65.5
15
70
32.5 264
25
6
170
50
M12
7
630
TPN
FSHF 630 TPN
340
315
210
358
240
26
78
-
87
32.5 285
40
6
170
50
M12
8
800
TPN
FSHF 800 TPN
340
315
210
358
240
26
78
-
87
32.5 285
40
8
170
50
M12
B
(FIXING CENTER)
O
C
I
O
G
F
D
(FIXING CENTER)
125
2.0
K
K
B (25O/32O/4OOA)
(FIXING CENTER)
50
H M
194.0
A
131
Switch Disconnector Fuse (Cubicle Fuse Switch Unit)
Dimensional details (in mm) - Open execution (Switched neutral pole)
S.
No.
Rating
Execution
Amps.
Type
A
B
C
D
E
F
G
H
K
M
N
O
P
S
T
Bolt
1
125
TPSN
FSHF 125 TPSN 283
221
131
162
157
26
39.5
-
44
43
222
20
4
125
50
M8
2
160
TPSN
FSHF 160 TPSN 283
221
131
162
157
26
39.5
-
44
43
222
20
4
125
50
M8
3
200
TPSN
FSHF 200 TPSN 283
221
131
162
157
26
39.5
-
44
43
222
25
4
125
50
M8
4
250
TPSN
FSHF 250 TPSN 372
250
183
224
212
26
65.5
15
70
32.5 264
25
4
170
50
M10
5
320
TPSN
FSHF 320 TPSN 372
250
183
224
212
26
65.5
15
70
32.5 264
25
6
170
50
M10
6
400
TPSN
FSHF 400 TPSN 372
250
183
224
212
26
65.5
15
70
32.5 264
25
6
170
50
M12
7
630
TPSN
FSHF 630 TPSN 401
315
210
358
240
26
78
-
87
32.5 285
40
6
170
50
M12
8
800
TPSN
FSHF 800 TPSN 401
315
210
358
240
26
78
-
87
32.5 285
40
8
170
50
M12
B
(FIXING CENTER)
O
C
I
G
F
D
(FIXING CENTER)
125
O
2.0
K
K
B (25O/32O/4OOA)
(FIXING CENTER)
50
H M
194.0
A
Dimensional details (in mm) - Of cover name plate fixing detail
S.
No.
Rating Amps.
A
B
C
D
E
F
1
160/200
104
6
38
16.6
26
12.5
2
250/320/400
104
7
44
22
26.5
16.5
3
630/800
104
7
44
22
26.5
16.5
General Tolerance ± 1.5
A
=
4-HOLES φ 2.O
E
=
A
F
=
HOLES φ 9.5
=
HOLES φ D
4-HOLES φ B
ON P.C.D (C)
132
Switch Disconnector Fuse (Cubicle Fuse Switch Unit)
Dimensional details (in mm) - Switch disconnector / Isolator open execution
S.
No.
Rating
Execution
Amps.
Type
A
B
C
D
F
G
K
M
N
O
P
S
T
Bolt
1
125
TPN
CISF 125 TPN
244
242.5
131
162
26
39.5
44
43
222
15
4
125
50
M8
2
200
TPN
CISF 200 TPN
244
242.5
131
162
26
39.5
44
43
222
20
4
125
50
M8
3
400
TPN
CISF 400 TPN
311
242.5
183
224
26
65.5
70
32.5
264
25
6
170
50
M12
4
630
TPN
CISF 630 TPN
311
250
183
224
26
65.5
70
32.5
264
30
6
170
50
M12
5
800
TPN
CISF 800 TPN
340
315
208
358
26
78
87
32.5
285
40
6
170
50
M12
6
1000
TPN
CISF 1000 TPN
340
315
208
358
26
78
87
32.5
285
40
6
170
50
M12
S
D
C
F
O
O
G
I
(FIXING CENTER)
STAGGERED CONTACT
K
K
B
(FIXING CENTER)
M
B (FOR 125/2OOA)
T
(FIXING CENTER)
A
133
N
E
P