500MMT - Cooper Industries - Datasheet.Directory

‘08 High Speed Fuses

British Style - BS 88

British Style - 240V

All Bussmann British style fuses are tested to IEC 60269 Part 4.

This standard requires a test voltage which is 5% higher than the

rated voltage. In the North America fuses are required to clear

only their rated voltage.

LCT, LET, LMT & LMMT

Voltage Rating: 240Vac/150Vdc

Current Rating: 6 - 900 Amps

Interrupting Rating: 200kA RMS Symmetrical

Agency Information

Designed & Tested to BS88: Part 4, IEC 60269 Part 4

UL Recognized, Std. 248-13,

Watt loss provided at rated current

Electrical Characteristics

6 2 6 9 1.0 6LCT 20 0.110

10 3.8 12 22 2.5 10LCT 20 0.110

LCT 12 7 22 32 2.5 12LCT 20 0.110

16 20 50 100 2.5 16LCT 20 0.110

20 25 80 160 4.0 20LCT 20 0.110

25 18 120 250 4.0 25LET 10 0.310

32 32 200 450 5.0 32LET 10 0.310

35 50 320 600 5.0 35LET 10 0.310

50 100 500 1400 7.0 50LET 10 0.310

LET 63 180 1100 2200 9.0 63LET 10 0.310

80 300 1900 3800 10.0 80LET 10 0.310

100 600 3800 7500 10.0 100LET 10 0.310

125 600 3800 7500 16.0 125LET 10 0.310

160 1100 7000 16000 20.0 160LET 10 0.310

180 1600 12000 29000 21.0 180LET 10 0.310

160 1100 7000 16000 17.0 160LMT 1 0.180

200 1500 10000 20000 28.0 200LMT 1 0.180

250 3200 20000 40000 28.0 250LMT 1 0.180

LMT 315 6000 35000 75000 35.0 315LMT 1 0.180

355 8000 50000 100000 35.0 355LMT 1 0.180

400 14000 70000 160000 40.0 400LMT 1 0.180

450 18000 100000 220000 42.0 450LMT 1 0.180

400 6000 35000 80000 60.0 400LMMT 1 0.370

500 14000 80000 170000 64.0 500LMMT 1 0.370

630 24000 150000 300000 75.0 630LMMT 1 0.370

LMMT 710 32000 200000 460000 77.0 710LMMT 1 0.370

800 52000 300000 600000 82.0 800LMMT 1 0.370

900 75000 400000 800000 97.0 900LMMT 1 0.370

Note: 7LET, 10LET, 12LET and 16LET are available for replacement purposes on existing equipment (not UL recognized) till stocks last

BIF Document : 720004

Fig 1

Fig 2

Fig 3

Fig 4

Rated Current Pre-arc Clearing Clearing Watts Part Number Carton Qty. Carton Weight Figure

Size RMS-Amps at 120V at 240V Loss

I2t (A2SEC)

CE logo denotes compliance with European Union Low Voltage

Directive (50-1000V AC, 75-1500V DC). Refer to BIF document #8002.

1For product data sheets, visit www.cooperbussmann.com/1/technicalinformation.html

High Speed Fuse - BS 88

CE logo denotes compliance with European Union Low Voltage

Directive (50-1000V AC, 75-1500V DC). Refer to BIF document #8002.

I2t (A2SEC)

Rated Current Pre-arc Clearing Clearing Watts Part Number Carton Qty. Carton Weight Figure

Size RMS-Amps at 415V at 660V Loss

Note: 8ET, 12ET, 15ET, 20ET, 65EET and 75EET are available for replacement purposes on existing equip-

ment (not UL recognized) till stocks last

† 350V DC (IEC) rating. No UL Recognition.

BIF Document : 720024

Electrical Characteristics

CT, ET, FE, EET, FEE, FM, FMM,

MT†, MMT†

Voltage Rating: 690Vac/500Vdc

Current Rating: 6 - 710 Amps

Interrupting Rating: 200kA RMS Symmetrical

Agency Information

Designed & Tested to BS88: Part 4, IEC 60269 Part 4

UL Recognized, Std. 248-13,

Watt loss provided at rated current

MT, MMT and additional ratings of ET and EET are available for replacement

purposes on existing equipment and are BS 88: Part 4 approved

British Style - 690V

6 1.8 8.5 12 2 6CT 20 0.16

10 7 30 48 3 10CT 20 0.160

CT 12 10 40 65 3 12CT 20 0.160

16 16 66 110 7 16CT 20 0.160

20 32 150 220 7 20CT 20 0.160

25 25 150 250 7 25ET 10 0.420

32 32 190 350 11 32ET 10 0.420

35 52 310 500 11 35ET 10 0.420

40 103 600 900 9 40ET 10 0.420

ET 45 103 680 1100 11 45ET 10 0.420

56 135 950 1500 14 56ET 10 0.420

63 171 1200 2000 16 63ET 10 0.420

80 360 2500 4000 18 80ET 10 0.420

35 33 130 200 9 35FE 10 0.420

40 52 180 300 9 40FE 10 0.420

45 76 270 450 11 45FE 10 0.420

50 103 380 600 11 50FE 10 0.420

FE 63 135 480 750 12 63FE 10 0.420

71 210 600 950 17 71FE 10 0.420

80 250 900 1500 20 80FE 10 0.420

90 360 1300 2100 20 90FE 10 0.420

100 470 1800 2800 23 100FE 10 0.420

90 490 3000 4500 19 90EET 5 0.450

110 600 4000 6500 27 110EET 5 0.450

EET 140 1050 7000 12000 35 140EET 5 0.450

160 1500 10000 17000 39 160EET 5 0.450

100 400 1600 2400 24 100FEE 5 0.450

120 540 1900 3100 32 120FEE 5 0.450

140 850 2500 3800 36 140FEE 5 0.450

FEE 160 1000 3700 5700 46 160FEE 5 0.450

180 1400 5300 8400 46 180FEE 5 0.450

200 1900 7100 11400 52 200FEE 5 0.450

180 1400 7500 13500 40 180FM 1 0.240

200 2600 10500 18500 40 200FM 1 0.240

225 3700 14500 26500 44 225FM 1 0.240

FM 250 5200 20500 37500 48 250FM 1 0.240

280 7000 30500 55000 48 280FM 1 0.240

315 10000 40000 77000 55 315FM 1 0.240

350 15000 60000 105000 55 350FM 1 0.240

400 10000 40000 72500 85 400FMM 1 0.450

450 15000 60000 105000 90 450FMM 1 0.450

500 20000 82000 150000 100 500FMM 1 0.450

FMM 550 30000 120000 215000 100 550FMM 1 0.450

630 45000 180000 310000 100 630FMM 1 0.450

700 60000 245000 420000 120 700FMM 1 0.450

160 2400 15000 25000 26 160MT 1 0.260

180 3800 25000 38000 26 180MT 1 0.260

200 6000 40000 58000 27 200MT 1 0.260

MT† 250 11500 80000 110000 32 250MT 1 0.260

280 16500 100000 150000 35 280MT 1 0.260

315 19000 125000 180000 42 315MT 1 0.260

355 22000 160000 200000 51 355MT 1 0.260

180 1650 12000 18000 42 180MMT 1 .0470

200 2200 16000 23000 42 200MMT 1 .0470

225 3700 26000 40000 42 225MMT 1 .0470

280 6600 47000 70000 47 280MMT 1 .0470

315 8600 62000 91000 51 315MMT 1 .0470

MMT† 355 13500 97000 140000 54 355MMT 1 .0470

400 21000 150000 220000 60 400MMT 1 .0470

450 30000 220000 320000 57 450MMT 1 .0470

500 42000 300000 450000 64 500MMT 1 .0470

560 60000 430000 640000 64 560MMT 1 .0470

630 68500 500000 720000 86 630MMT 1 .0470

710 78000 600000 850000 105 710MMT 1 .0470

Fig 5

Fig 6

Fig 7

Fig 8

Fig 9

Fig 8

Fig 9

For product data sheets, visit www.cooperbussmann.com/1/technicalinformation.html

High Speed Fuse - BS 88

Trip-indicator fuselinks are available for use in parallel

with the main fuselinks. They can either be attached to

the associated fuselink or mounted separately in panel mounted

fuse clips, Part No. CL1. A push-on adaptor

and microswitch attachment is available for use with the

trip indicator to give the facility of remote indication,

reference MAI or MBI.

Fuse ratings of 20A and below cannot usually accommodate a

trip fuselink in parallel.

621

A0.8

6.35

2.4 3.6

5.2

44 3.6

9.5

NC NC

NONO

Dimensions in mm.

1mm = 0.0394” 1” = 25.4mm

Dim. ‘A’ Voltage Dim. ‘A’ Voltage

Type Max. Rating Type Max. Rating

TI250 37.6 250 TI1100 98.4 1100

TI500 47.5 500 TI1500 120.8 1500

TI600 55.7 600 TI2000 147.5 2000

TI700 61.8 700 TI2500 198.3 2500

Trip-indicator Fuselink Data

Microswitch and Adaptor Type MAI

Current Rating:

AC 50/60Hz resistive load @ 250 VRMS 4A

AC 50/60Hz resistive load @ 127 VRMS 6A

DC, resistive load @ 110 Vdc 0.7

DC, resistive load @ 30 Vdc 2

Maximum Working Voltage:

Contact-to-contact (RMS) 1000V

Contact-to-contact (RMS) 1500V

Stud Fuseblocks

Modular Max. Max. Fuse BIF

Base Voltage Current Rating Document

1BS101 600V 100A 1206

1BS102 600V 400A 1207

1BS103 600V 400A 1208

1BS104 600V 600A 1209

Universal Fuseblocks

Part No. Stud Height Stud Dia & Threads

C5268-1 1.00”

C5268-2 1.75”

C5268-3 0.75”

C5268-4 1.00”

C5268-5 1.75”

Fuse Type Order Ref. Fuse Type Order Ref.

ET EC-600 FM MC-600

EET EC-600 FMM MC-600

FE EC-600 LMT MC-250

FEE EC-600 LMMT MC-250

LET EC-250

Where trip indicator fuselinks are to be attached to the main

fuselink, an accessory pack comprising a pair of mounting clips

and an appropriate trip indicator fuselink will be required.

The ordering code references for these packs are listed below:

3For product data sheets, visit www.cooperbussmann.com/1/technicalinformation.html

High Speed Fuse - Accessories

Fig 1 Fig 2 Fig 3 Fig 4

Fig 5 Fig 6 Fig 7 Fig 8 Fig 9

Dim. ‘A’ FM 80 - 85

MT 85

MMT/FMM 85

Total Clearing I2t

The total clearing I2t at rated voltage and at power

factor of 15% are given in the electrical characteris-

tics. For other voltages, the electrical I2t is found by

multiplying by correction factor K, given as a func-

tion of applied working voltage Eg(RMS).

Arc Voltage

This curve gives the peak arc voltage UL, which may

appear across the fuse during its operation as func-

tion of the applied working voltage Eg(RMS) at a

power factor of 15%.

Power Losses

Watts loss at rated current is given in the electrical

characteristics. The curve allows the calculation of

the power losses at load currents lower than the

rated current. The correction factor Kp, is given as a

function of the RMS load current lb, in % of the

rated current.

Electrical Characteristics

Curves below : 1) - LCT

2) - LET, LMT & LMMT

For product data sheets, visit www.cooperbussmann.com/1/technicalinformation.html

High Speed Fuse - Dimensions

Curves below : 1) - LCT

2) - LET, LMT & LMMT

Curves below : 1) - CT

2) - ET, EET, FE, FEE, MT, MMT, FM & FMM

Curves below : 1) - CT

2) - ET, EET, FE, FEE, MT, MMT, FM & FMM

British Style - 240 Volts

British Style - 690 Volts