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Switch-Disconnector-Fuse Switch-Disconnector

Type FN

Larsen & Toubro is a technology-driven USD 7 billion company that infuses engineering with imagination. The Company offers a wide range of advanced solutions in the field of Engineering, Construction, Electrical & Electronics, Machinery and Information Technology.

L&T Switchgear, which forms part of the Electrical & Electronics business, is India's largest manufacturer of low voltage switchgear, with the scale, sophistication and range to meet global benchmarks. With over four decades of experience in this field, the Company today enjoys a leadership position in the Indian market with growing presence in international markets.

It offers a complete range of products including controlgear, powergear, motor starters, energy meters, wires and host of other accessories. The products conform to international standards, carry CE markings and are KEMA certified.

L&T offers wide range of switch disconector fuse for manual operation. The range of switch disconector fuse conforms to the latest IEC/IS standards. The products are in line with design and quality standard associated with all L&T switchgear products.

Switchgear Factory, Mumbai

About us

Features of FN series :• Compact design saves space• Electrodynamic Compensation• Quad break Contact System• Full AC - 23 A rating for the complete range• Highest fused Short Circuit Capacity• Quick make / Quick break / Positive break• Clear ON / OFF indicator• Separate arcing / Current carrying zone• High clearance & Cree pages• Separate bridge for each pole• Maximum ground clearance• Phase barrier & Terminal Shroud as a

standard accessory• Fuse stationary & Isolated from both sides• Direct access to mounting & terminal screws• Generous terminal capacity • Replaceable contacts for enhanced life• Suitable for vertical & horizontal orientation• Wide range of Spares & Accessories• Handle coupling as per IS 8623

The handle coupling has the

following user-friendly features.

Easy fixing of handle on panel door

by two screws.

Door interlock for safety of operating

personnel when switch is ‘ON’. The

interlock can be defeated if required.

Built-in padlocking arrangement to

lock the unit in either ‘ON’ or ‘OFF’

position.

The handle coupling can take a

mismatch or ±3mm in all directions.

High making & breaking capacity

Due to Quad break construction.

High Electrical & Mechanical life.

Clear ON / OFF indication is

provided on the switch

(by a red pointer)

Built-in neutral :

Switch-Disconnector-Fuse

consist of an integral neutral,

making the units suitable for

3 phase, 4 - wire application.

FN 32 / 63 has switched

neutral while higher ratings

have isolable neutral.

Mechanism :

This mechanism is front

operated quick-make /

quick-break and independent

of speed of operation.

Salient Features of SDF

1

Compact construction :

To ensure light weight

low operating torque

switch which saves panel

space.

Easy to maintain contacts.Phase barriers :

Interphase barriers

are provided to eliminate

the possibility of

interphase short circuit.

The Switch-Disconnector-Fuse

units can be mounted at

any angle in a vertical plane.

Fuses are isolated from both

sides. This offers safety to operating

personnel while replacing fuses.

Fuses remain

stationery during

switching operation.

Large Ground Clearance

to eliminate possibility of

phase-ground flash over.

Large terminals to accommodate

Aluminium bus bars.

The terminals can be shrouded for

protection against phase-phase short

circuit through an external conducting

path and also for protection against

accidental human contact to live

terminals.

Terminal shrouds, to protect against

phase-phase short circuit

Contact System :

Contact system is QUAD BREAK. There are

no. of parallel moving contacts per pole per break.

Hence, better Arc Quenching & more electrical

life of contacts. Each pole has separate bridge,

carrying the moving contacts, achieving a high

order of interphase separation & avoiding

phase-phase flash over.

SDF Interior in Sheet Steel Enclosure :

Complete range of S-D-F is also available in

attractive powder coated sheet steel enclosures.

FN 32 / 63 in sheet steel enclosure comes

fitted with gland plate.

32

Technical Data

Switch-Disconnector-fuse Units. Type FNConforms to IS13947 (part-3) / IEC60947-3

No. of poles in series, utilization categoryat rated current 3, DC-23 A 3, DC-23 A 2, DC-23 A 2, DC-23 A 2, DC-23 A 2, DC-23 A 2, DC-23 A 2, DC-22 A 2, DC-22 A 2, DC-22 A 2, DC-22 B

No. of Poles

Neutral #

0Service temperature C

Rated operational voltage (U ) Ve

Rated insulation voltage (U ) Vi

Rated impulse withstand voltage (U ) kVimp

Rated Frequency Hz

Conventional enclosed thermal0current at 40 C (I ) Athe

Rated operational current (l )e

AC - 23 A utilization category A

Rated making capacity (436 V, cosO=0.35) A

Rated breaking capacity (436 V, cosO=0.35) A

Rated fused short circuit current kAwith L&T fuses, rating A / Type / Size

Capacitor duty - Connected-415 V, 50 - 60 Hz kVAr

Mechanical life (Operating cycles)

2Terminal capacity (main) mm

2Terminal capacity (neutral) mm

Terminal screw mm

Type Designation

* -------- Power factor = 0.45 as required in IS 13947 - (part 3).

# ------- For FN 125 to FN 800 Switched - Neutral is available as accessory.

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

125

125

1250

1000

100125 /HN / 00

57

15000

95

50

M 8 x 20

3+Neutral

Switched

-20 to 50

415

690

8

50 - 60

32

32

320*

256*

8032 / HF / 14x51

14

15000

35

35

M 6 x 12

3+Neutral

Switched

-20 to 50

415

690

8

50 - 60

63

63

630*

504*

8063 / HF / 14x51

29

15000

35

35

M 6 x 12

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

100

100

1000

800

100100 / HN / 00

45

15000

95

50

M 8 x 20

FN 32 FN 63 FN 100 FN 125

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

160

160

1600

1280

100160 / HN / 00

57

15000

185

50

M 8 x 20

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

200

200

2000

1600

100200 / HN / 0

92

10000

240

120

M 10 x 30

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

250

250

2500

2000

100250 / HN / 1

115

10000

240

120

M 10 x 30

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

315

315

3150

2520

100315 / HN / 1

145

10000

400

240

M 10 x 30

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

400

400

4000

3200

100400 / HN / 2

175

10000

2 x 400

240

M 12 x 40

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

630

630

6300

5040

100630 / HN / 3

270

10000

2 x 625

400

M 16 x 50

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

800

800

8000

6400

100800 / HN / 3

270

10000

2 x 625

400

M 16 x 50

FN 160 FN 200 FN 250 FN 315 FN 400 FN 630 FN 800

DC Rating at 220 V DC

FUSE

8

13

7

10

5

4 5

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

200

200

200

200

200

2, DC-23 A

2000

1600

92

10000

240

120

M 10 x 30

6

FN 200

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

250

250

250

250

250

2, DC-23 A

2500

2000

115

10000

400

120

M 10 x 30

10

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

315

315

315

315

315

2, DC-22 A

3150

2520

145

10000

400

120

M 10 x 30

14

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

400

400

400

400

400

2, DC-22 A

4000

3200

175

10000

2 x 400

240

M 12 x 40

14

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

630

630

630

630

630

2, DC-22 A

6300

5040

270

10000

2 x 625

400

M 16 x 50

20

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

800

800

800

800

800

2, DC-22 A

8000

6400

270

10000

2 x 625

400

M 16 x 50

20

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

1000

1000

1000

1000

1000

2, DC-22 B

10000

8000

270

10000

2 x 625

400

M 16 x 50

25

FN 250 FN 315 FN 400 FN 630 FN 800 FN 1000

No. of poles

Neutral

Service temperature

Rated operational voltage (U )e

Rated insulation voltage (U )i

Rated impulse withstand voltage (U )imp

Rated frequency Hz

0Conventional Enclosed thermal current at 40 C

Rated operational current le

AC 20 A utilization category




DC rating at 220 V DC

No. of poles in series, utilization category

at rated current

Rated making capacity (436 V, cosO-0.35)

Rated breaking capacity (436 V, cosO-0.35)

Capacitor duty - 415 V 50 - 60 Hz

Mechanical life (operating cycles)

Terminal capacity (main)

Terminal capacity (neutral)

Terminal screw

Short circuit withstand current kA

(duration 1 secs)

3+Neutral

Switched

-20 to 50

415

690

8

50 - 60

32

32

32

32

32

3, DC-23 A

320

256

14

15000

35

35

M 6 x 12

1.5

3+Neutral

Switched

-20 to 50

415

690

8

50 - 60

63

63

63

63

63

3, DC-23 A

630

504

29

15000

35

35

M 6 x 12

1.5

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

100

100

100

100

100

2, DC-23 A

1000

800

45

15000

95

50

M 8 x 20

4

3+Neutral

Isolable

-20 to 50

415

690

8

50 - 60

125

125

125

125

125

2, DC-23 A

1250

1000

57

15000

95

50

M 8 x 30

4

FN 32 FN 63 FN 100 FN 125

Switch Disconnector - Type FNConformance to IS13947 (part-3) / IEC60947-3

Technical Data

0C

V

V

kV

A

A

A

kVAR

2mm

2mm

mm

Type Designation

Shaft Extension Kit :

Fuse Puller :

Handle Coupling (type A & B) :

Auxiliary Contacts :

Spares

Moving Contact :

Front Housing assembly :

Shaft length can be increased with shaft

extension kit.

A fuse puller is provided which facilitate easy &

safe removal of fuses.

lrrespective of the switch orientation (vertical or

horizontal), operation in any of the four

quadrants is possible by selecting right handle

coupling (Refer table on next page)

1 NO + 1 NC auxiliary contact is available as an

accessory. This can be suitably wired in the

control circuit. Rated operational current l (AC - 15) - 4 Ae

Rated operational voltage U - 415 e

Moving contacts are available for rangesFN 100 to FN 800. One set of moving contact

spare contains, spring, guide & moving contact.

Complete front housing assembly is available

from FN 100 to FN 800.

Accessories

Switched Neutral :

Terminal Shroud :

Mechanical Interlock Kit :

Castell Interlock :

In FN 32 / 63 Switched-Neutral pole is an

integral part of the Switch-Disconnector-Fuse.

For higher ratings, a double break, site-fitted

switched neutral pole can be provided. This is

operated by the main mechanism.

The terminals can be shrouded for protection

against phase-short circuit through an external

conducting path and against accidental human

contact with live terminals.

Two Switch-Disconnector-Fuse units can be

interlocked by mechanical interlock kit. After

interlocking, the following three positions are

possible.

- Both SDFUs in OFF position Hence two

mechanically interlocked SDFUs can be

used as a change over switch

Switch-Disconnector-Fuse units can be locked

on OFF position with help of castell interlock.

Castell interlock can also be used to interlock

two S-D-F units. (Different variety of locks are

available)

Spares & Accessories for FN Range - Ordering Information

Ordering Suffix - 0000 for all.

Ac

ce

ss

ori

es

Sp

are

s

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 M)

Not Available

Not Available

SK91190

Built-in

SK91302

SK91257

SK91277

SK91337

SK91185

Not Available

Not Available

Not Available

SK91373

ST31677 ST31678

SK91137

SK95233

SK91328

SK91374 SK91375

ST31679 ST31729

SK91335

SK95516

SK91329

SK91258

SK91278

SK95600

SK95232

SK00333 - SK00344

SK91376 SK91377 SK91378 SK91379

ST31730

SK91347

SK95546

ST31681

SK91346

SK95517

SK91330

SK91259

SK91279

Not Available

SF90126

SK91331

SK95545

SK00345 - SK00356

Versions FN 32 FN 63 FN 125 / 160FN 100 FN 200 FN 250 FN 315 FN 400 FN 630 FN 800

ST31683 ST31682

Spares & Accessories

6

Wide range of spares & accessories are available for Switch-Disconnector-Fuse units type FN.

- SDFU 1 in ON position SDFU 2 in OFF position

- SDFU 2 in ON position SDFU 1 in OFF position

1

0

1

0

1

0

1

0

1

0

1

0

1

0

10

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

Operating Quadrant

(hand)

SwitchOrientation

DoorCut-out

HandleCoupling

Type

Seen From Front of the Door

Selection of Handle

Note : Arrow ( ) indicates position of Interlock Defeat Key

Type A : supplied as standard with all S-D-Fs

Type B : supplied on request

7

Switch-disconnector-fuse Type DIN FN 32 / 63

Note: All dimensions are in mm.

Overall Dimensions

Overall Dimensions - FN 32 / 63

Drilling Details on DoorFor Mounting Handle CouplingSeen From Front of The Door

Drilling Details on Base PlateFor Mounting SwitchSeen From Front of The Door

Drilling Details FN 32 / 63

A1

5

15

0

6 SQ.

35

83

.5

29.6

128

113.2

55

5

Au

xilia

ry

Co

nta

ct B

lock

(op

tion

al

Acc

ess

ory

)

Terminal Shroud(Optional Accessory)

31

95

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

ar

Insi

de

of th

e C

ub

icle

15

0 ±

3

100 MIN

47

40

SQ. 65

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

8

Assembly of Handle Coupling on Door - FN 32 / 63

Switch-disconnector-fuse FN 100 / 125 / 160Type DIN


17

0

77

.5

Terminal Shroud

216 (with Aux. Contact Block)


Aux. Contact Block

(Optional Accessory)(Optional Accessory)

7

26

12

5

75

M5 ScrewEarthing 20

39.6 48 47 471

22

69

94

14

2

15

9

16

4

B Ø9

225

2041607

M 6 Screw

13

6A

10

Switch-disconnector-fuse Type DIN FN 200 / 250

B

111

.5

7

10

8.5

21

0

19

0

18

0

17

0

5656553029

39

83

.5

A 2.5

96

C D

12.5 24.7

43

.21

09

238

188

TYPE

FN 100 / 125

FN 160

A

154

164

B

20

25

TYPE

FN 200

FN 250

A

190

206

B

162.5

108.5

C

178

194.5

D

187.5

204

9

FN

12

5

PhaseBarrier

(Optional Accessory)

Aux. Contact Block

Terminal Shroud

Phase Barrier

(Optional Accessory)

M8 Bolt

M5 ScrewEarthing

M10 Bolt

Ø12.5 Hole

Assembly of Handle Coupling on Door FN 100 / 125 / 160 / 200 / 250


Drilling Details FN 100 / 125 / 160 / 200 / 250

B

A

D

4 Holes

Suitable For M6 Screws

C

2 Holes Ø4 ± 0.1For M3.5 Screws

Holes Ø50 ± 0.25

60 ± 0.25

60

± 0

.25

Operating Shaft Center

Mismatch ±3 Permissible

Drilling Details on DoorFor Mounting Handle CouplingSeen From Front of The Door

Drilling Details on Base PlateFor Mounting Switch

Seen From Front of The Door

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

ar

Insi

de

Of T

he

Cu

bic

le

A ±

3

54

.5 74

.4

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

Dimension

A

FN 100 / 125 / 160

180

FN 200

200

FN 250

216

Overall Dimensions

10


Switch-disconnector-fuse FN 315 / 400Type DINPhase Barrier

3

25

0

24

0

14

6

A 13

7

Aux. Contact Block

20

6

23

8B

17

.5

407060.5

M5 ScrewEarthing 43

M10 Bolt 70

17 24.5215

280

5

9

113

20

01

95

17

51

74


Bolt'c'Terminal Shroud

16.3

45

.7

14

6

5

Type

FN 315

FN 400

A

103

102

B

220

228

C

M10

M12

Aux. Contact Block


Terminal Shroud

336

27117 24.5

13.3 55

9

117

.5

45

.7

18

2 21

81

95

18

21

75

FUSE

24

.5

14

7

26

0

27

0 4

8

13

71

05

26

1

25

0.5

22

5.5

Phase Barrier

M5 Screw-Earthing

M12 BoltM16 Bolt48 60

71 90

Switch-disconnector-fuse FN 630 / 800Type DIN

11


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 Switch

Seen From Front of the Door

Hole Ø50 ± 0.25

Operating Shaft CenterMismatch ± 3 Permissible

60 ± 0.25

60

± 0

.25

45

.7

17

5

24.5 A

4 Holes SuitableFor M8 Screws

2 Holes Ø4 ± 0.1For M3.5 Screws

230

25

0 ±

3

O

SQ. 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

Overall Dimensions

12

Padlock Clamp F 5 To F 8.5 mm

Cheese Head Screw

Push Here To Defeat Interlock

Switch In Off Position

Door Thickness

Max. 2 mm

Cle

ar

Insi

de

of T

he

Cu

bic

le

Hinge

150 min


FN In Sheet Steel Enclosure

C

F

J

H

G

A

O 4 Holes Ø 6.5

B E L

K

I

O

FN 32 / 63

FN 100 / 125 / 160

FN 200

FN 250 / 315 / 400

FN 630 / 800

A

245

288

335

365

421

B

238

265

265

265

285

C

196

245

265

315

337

D

230

273

320

350

406

E

226

253

253

253

273

F

153

183

203

253

273

G

190

233

280

310

366

H

73

104

124

185

185

I

210

253

300

330

386

J

80

110

130

191

191

K

170

213

260

300

346

L

165

193

193

203

223

Extreme Overalldimension

Basic Enclosuredimension

Cutout forCables

Gl and Plate mountingdimension

Enclosuremountingdimension

Type

13

18

0

17

0

77

.5

2

O 37 MaxFuse Size A4According toIS 13703

12

9

15

7.5

69

3

Aux. Contact Block

1.2 227

5

26

12

5

75

M5 ScrewEarthing

M6 Screw

20

M6 39.6

48 47 47

94

13

6

15

4

12

2

Terminal Shroud

12204

160

20 9

Switch-Disconnector-Fuse Type Bolted

FN 100 / 125


6 SQ.

5

15

0

35

83

.5

113.229.6 55

5 2 Mounting HolesFor M4 Screws

79

44

.5

27272915.1

16

31

Te

rmin

al S

hro

ud

(op

tion

al A

cce

sso

ry)

95

75

111

Fuse Size B2According ToIs13703

M10 Bolt

D

C

180

210

Phase Barrier

%%C42 MAX.

A B

96

2.5

111

.5

17

9 (

MA

X.)

E

Aux. Contact Block


238

18824.7

12.5

5M8 Bolt

43

.21

09

M5 EarthingScrew

29

39 5530

56 56

17

01

90

10

8.5

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

Overall Dimensions

14

15

Switch-Disconnector-Fuse Type Bolted FN 315 / 400

Switch-Disconnector-Fuse Type Bolted FN 630


25

0

24

01

46

3

Phase Barrier

O66 Max.

13

7

B (

ma

x.)

Re

fer

Tab

le

23

8

Aux. Contact Block

291(with Aux. Contact Block)

275

21517 24.3

5 Terminal Shroud 5

45

.7

16.3

14

6

9

113

17

5

19

5

707040

60.543

M10 Bolt

M5 ScrewEarthing

Fuse SizeAccording to Is 13703(refer Table)

Bolt-c(refer Table)

111

A (

refe

r Ta

ble

)

174

200

Phase Barrier

27

0

26

0

O77 Max.

M16 Bolt

24

9 (

ma

x.)

26

1

Aux. Contact Block

13

7


33027117 24.5

13.35

45

.7

18

2

M5 ScrewEarthing

M12 Bolt

4971 90

6090

17

5

19

5

117

.5

9

5Terminal Shroud

Fuse Size C2According To

Is 13703

21225.425.4 133

4

14

7

10

3 6

182218

Fuse Links Type HF(Fuse links with cylindrical contact caps)• Conform to IEC60269 / IS13703• Low watt loss - Saving in 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

Fuse Rating (A)

Ordering Details

Suitable for S-D-F type FNCat. 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 *51 MM

32, 63

32, 63

32, 63

32, 63

32, 63

32, 63

32, 63

32, 63

32, 63

63

63

63

Cylindrical HRC Fuses

16

Fuse-pulling handle should be used for safe and easy removal of fuse links (for HF : SK91185 & for HN : SF90126)

Fuse Links Type HN(Fuse links with blade contacts)• Conforms to IEC60269 / IS13703• Low watt loss - Saving in power• Cooler running of associated products• Low let through energy• High breaking capacity - 100 kA • Immediate fault indication• Rated voltage - 415 V

63

80

100

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

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

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

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

100, 125, 160

100, 125, 160

100, 125, 160

100, 125, 160

100, 125, 160

100, 125, 160

125, 160

160

200

200

200

200

200

250, 315

250, 315

250, 315

250, 315

250, 315

400

400

400

400

630, 800

630, 800

630, 800

630, 800

800

Size 000

Size 00

Size 0

Size 1

Size 2

Size 3

Size of thefuse link

Rating(A) Cat. Nos.

Rated watt loss

Watt loss limitsas per IS 13703

Suitable for S-D-Funits type FN or equivalent

100 Amp, Fuse-7.5 W

17

Type HG

Type HQ

Fuse Links Type HG and HQ(Fuse-links for bolted connections)• Conforms to IEC60269 / IS13703• Low watt loss• Low let through energy• High breaking capacity - 80 kA• Rated voltage - 415 V

A1

A1L

A2

A3

A4

B1

B2

B3

B4

C2

C3

2 4 6

10 16 20 25 32 20 25 32 50 63

4 6

10 16 20 25 32 35 50 63 80

100 125

80 100 125 125 160 200 250 315 315 355 400 400 500 630 630

ST30736ST30737ST30738ST30739ST30740ST30741ST30742ST30743ST34527ST34528ST34529ST35827ST35828ST30747ST30748ST30749ST30750ST30752ST30753ST30753ST30759ST30760ST30761ST30767ST30768ST30769ST30774ST30775ST30776ST30777ST30778ST30779ST30781ST30782ST30782ST30783ST30784ST30785ST30786ST30787ST30788

32, 6332, 6332, 6332, 6332, 6332, 6332, 6332, 63

------------

100, 125, 160100, 125, 160100, 125, 160100, 125, 160100, 125, 160100, 125, 160

---

200200200

250, 315315400400400630630630

-

0.30.51.21.41.82.22.93.02.43.13.44.04.70.81.41.50.22.83.84.44.56.26.89.16.26.89.2

10.516.015.019.520.5283232343838505558

2

4

6

10

16

20

25

32

F1

F1

F1

F1

F1

F1

F1

F1

ST30725

ST30726

ST30727

ST30728

ST30729

ST30730

ST30731

ST30732

0.3

0.5

1.2

1.4

1.8

2.2

2.9

3.0

Rating (A)

Size Cat. Nos. PowerLoss

Size of the fuse

Rating(A)

Cat. Nos.Suitable forS-D-F unitstype FN orequivalent

PowerLoss

18

Switch-disconnector-fuse and Type FNSwitch-disconnector

Ordering Information

Ordering Information: Orderig Suffix OOOO for all * Example: FN 32 Interior with handle * Ordering Information - SK95518OOOO

Type Designation

S-D-F Suitable for DIN Fuses

Interior with handle TPN

Interior in sheet steel enclosure

Interior with handle TP


FN 32(4 Pole)

FN 63(4 Pole) FN 100 FN 125 FN 160 FN 200Description

S-D-F Suitable for BS Fuses

SK95518

SK95612

SK95653

SK95421

SK95613

SK95651

SK95568

SK95569

ST30287

SK95570

SK95001

SK95005

ST27894

SK95009

SK95713

SK95714

SK95715

SK95998

SK95418

SK95511

ST27895

SK95588

Switch-Disconnector



SK95541 SK95540 SK95571

Description


Interior in sheet steel enclosure

Interior with handle TP

S-D-F Suitable for BS Fuses

S-D-F Suitable for DIN Fuses

SK95642

SK95681

ST31731

SK95682

SK95461

SK95514

ST27897

SK95590

SK95481

SK95515

ST27898

SK95591

SK95521

SK95547

ST27899

SK95592

SK95679

SK95705

ST31732

FN 250 FN 315 FN 400 FN 630 FN 800

Switch-Disconnector



SK95608 SK95609 SK95610 SK95551SK95611

FN 1000

SK95710

SK95405 SK95607

19

Type Designation

REGISTERED OFFICE AND HEAD OFFICEL&T House, Ballard EstateP. O. Box 278Mumbai 400 001Tel: 022-6752 5656Fax: 022-6752 5858Website: www.Larsentoubro.com

ELECTRICAL STANDARD PRODUCTS (ESP)501, Sakar Complex I Opp. Gandhigram Rly. Station Ashram RoadAhmedabad 380 009Tel: 079-66304007-11Fax: 079-26580491e-mail: [email protected]

38, Cubbon Road, Post Box 5098Bangalore 560 001Tel: 080-25020100, 25593613Fax: 080-25580525e-mail: [email protected]

131/1, Zone IIMaharana Pratap NagarBhopal 462 011Tel: 0755-4233906, 4233907Fax: 0755-2769264e-mail: [email protected]

Plot No. 559, Annapurna ComplexLewis RoadBhubaneswar 751 014Tel: 0674-6451342, 2436696Fax: 0674-2537309e-mail: [email protected]

SCO 32, Sector 26-D Madhya Marg, P. O. Box 14Chandigarh 160 026Tel: 0172-4646841 to 7Fax: 0172-4646802e-mail: [email protected]

10, Club House RoadChennai 600 002Tel: 044-28462072 / 4 / 5Fax: 044-28462102e-mail: [email protected]

67, Appuswamy RoadPost Bag 7156 Opp. Nirmala CollegeCoimbatore 641 045Tel: 0422-2588120 / 1 / 5Fax: 0422-2588148e-mail: [email protected]

Product improvement is a continuous process. For the latest information and special applications, please contact any of our offices listed here.

Electrical Standard Products (ESP) Branch Offices:

L&T House, Group MIG - 5 PadmanabhpurDurg 491 001Tel: 0788-2213833 / 14 / 28 / 29Fax: 0788-2213820

A1/11, Astronauts Avenue Bidhan NagarDurgapur 713 212Tel: 0343-2536891 / 8952 / 7844Fax: 0343-2536493 e-mail: [email protected]

Milanpur Road, Bamuni MaidanGuwahati 781 021Tel: 0361-2651297Fax: 0361-2551308e-mail: [email protected]

II Floor, Vasantha Chambers5-10- 173, Fateh Maidan RoadHyderabad 500004Tel: 040-66720250Fax: 040-23296468e-mail: [email protected]

D-24, Prithvi Raj Road, C-SchemeJaipur 302 001Tel: 0141-2385913 / 19Fax: 0141-2373280e-mail: [email protected]

Akashdeep Plaza, 2nd Floor P. O. GolmuriJamshedpur 831 003JharkhandTel: 0657-2340864Fax: 0657-2341250e-mail: [email protected]

Skybright Bldg. M. G. RoadRavipuram Junction, ErnakulamKochi 682 016Tel: 0484-4409420 / 427Fax: 0484-4409426e-mail: [email protected]

3-B, Shakespeare SaraniKolkata 700 071Tel: 033-44002572 / 3 / 4 Fax: 033-22822589e-mail: [email protected]

A28,Indira Nagar, Faizabad Road Uttar Pradesh, Lucknow 226 016Tel: 0522-2312904 / 5 / 6Fax: 0522-2311671e-mail: [email protected]

Plot No. 518 4th Main Road K. K. NagarMadurai 625 020Tel: 0452-2537404, 2521068Fax: 0452-2537552e-mail: [email protected]

EBG North Wing Office - 2 Powai CampusMumbai 400 072Tel: 022-67052874 / 2737 / 1156Fax: 022-67051112e-mail: [email protected]

8B, FarmlandRamdaspeth Behind Hotel RadhikaNagpur 440 010Tel: 0712-2420641 / 24Fax: 0712-2420619e-mail: [email protected]

32, Shivaji Marg P. O. Box 6223New Delhi 110 015Tel: 011-41419500 / 1, 41419515Fax: 011-41419600e-mail: [email protected]

L&T House P. O. Box 119 191/1, Dhole Patil RoadPune 411 001Tel: 020-26135048, 26135611Fax: 020-26129586, 26124910e-mail: [email protected]

3rd Floor Vishwakarma ChambersMajura Gate, Ring RoadSurat 395 002Tel: 0261-2473726Fax: 0261-2477078e-mail: [email protected]

Radhadaya ComplexOld Padra RoadNear Charotar SocietyVadodara 390 015Tel: 0265-6613610 / 11 / 12Fax: 0265-2336184e-mail: [email protected]

48-8-16, DwarakanagarVisakhapatnam 530 016Tel: 0891-6620411-4Fax: 0891-6620416e-mail: [email protected]

190908

Electrical Standard Products

Larsen & Toubro Limited

Powai Campus, Mumbai 400 072

Tel: 022-6705 0505

Fax: 022-6705 1746

E-mail: [email protected]

Website: www.LNTEBG.com

SP 50452 INT

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