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High Speed Fuses British Style - BS 88
High Speed Fuse - 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
Size
LCT
LET
LMT
LMMT
Rated Current RMS-Amps 6 10 12 16 20 25 32 35 50 63 80 100 125 160 180 160 200 250 315 355 400 450 400 500 630 710 800 900
Pre-arc
2 3.8 7 20 25 18 32 50 100 180 300 600 600 1100 1600 1100 1500 3200 6000 8000 14000 18000 6000 14000 24000 32000 52000 75000
I2t (A2 SEC) Clearing at 120V 6 12 22 50 80 120 200 320 500 1100 1900 3800 3800 7000 12000 7000 10000 20000 35000 50000 70000 100000 35000 80000 150000 200000 300000 400000
Clearing at 240V 9 22 32 100 160 250 450 600 1400 2200 3800 7500 7500 16000 29000 16000 20000 40000 75000 100000 160000 220000 80000 170000 300000 460000 600000 800000
Watts Loss
Part Number
1.0 2.5 2.5 2.5 4.0 4.0 5.0 5.0 7.0 9.0 10.0 10.0 16.0 20.0 21.0 17.0 28.0 28.0 35.0 35.0 40.0 42.0 60.0 64.0 75.0 77.0 82.0 97.0
6LCT 10LCT 12LCT 16LCT 20LCT 25LET 32LET 35LET 50LET 63LET 80LET 100LET 125LET 160LET 180LET 160LMT 200LMT 250LMT 315LMT 355LMT 400LMT 450LMT 400LMMT 500LMMT 630LMMT 710LMMT 800LMMT 900LMMT
Carton Qty.
20 20 20 20 20 10 10 10 10 10 10 10 10 10 10 1 1 1 1 1 1 1 1 1 1 1 1 1
Carton Weight
0.110 0.110 0.110 0.110 0.110 0.310 0.310 0.310 0.310 0.310 0.310 0.310 0.310 0.310 0.310 0.180 0.180 0.180 0.180 0.180 0.180 0.180 0.370 0.370 0.370 0.370 0.370 0.370
Figure
Fig 1
Fig 2
Fig 3
Fig 4
Note: 7LET, 10LET, 12LET and 16LET are available for replacement purposes on existing equipment (not UL recognized) till stocks last
BIF Document : 720004
CE logo denotes compliance with European Union Low Voltage Directive (50-1000V AC, 75-1500V DC). Refer to BIF document #8002.
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For product data sheets, visit www.cooperbussmann.com/1/technicalinformation.html
High Speed Fuse - BS 88 British Style - 690V 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 Electrical Characteristics
Size
CT
ET
FE
EET
FEE
FM
FMM
MT†
MMT†
Rated Current RMS-Amps 6 10 12 16 20 25 32 35 40 45 56 63 80 35 40 45 50 63 71 80 90 100 90 110 140 160 100 120 140 160 180 200 180 200 225 250 280 315 350 400 450 500 550 630 700 160 180 200 250 280 315 355 180 200 225 280 315 355 400 450 500 560 630 710
Pre-arc 1.8 7 10 16 32 25 32 52 103 103 135 171 360 33 52 76 103 135 210 250 360 470 490 600 1050 1500 400 540 850 1000 1400 1900 1400 2600 3700 5200 7000 10000 15000 10000 15000 20000 30000 45000 60000 2400 3800 6000 11500 16500 19000 22000 1650 2200 3700 6600 8600 13500 21000 30000 42000 60000 68500 78000
I2t (A2 SEC) Clearing at 415V 8.5 30 40 66 150 150 190 310 600 680 950 1200 2500 130 180 270 380 480 600 900 1300 1800 3000 4000 7000 10000 1600 1900 2500 3700 5300 7100 7500 10500 14500 20500 30500 40000 60000 40000 60000 82000 120000 180000 245000 15000 25000 40000 80000 100000 125000 160000 12000 16000 26000 47000 62000 97000 150000 220000 300000 430000 500000 600000
Clearing at 660V 12 48 65 110 220 250 350 500 900 1100 1500 2000 4000 200 300 450 600 750 950 1500 2100 2800 4500 6500 12000 17000 2400 3100 3800 5700 8400 11400 13500 18500 26500 37500 55000 77000 105000 72500 105000 150000 215000 310000 420000 25000 38000 58000 110000 150000 180000 200000 18000 23000 40000 70000 91000 140000 220000 320000 450000 640000 720000 850000
CE logo denotes compliance with European Union Low Voltage Directive (50-1000V AC, 75-1500V DC). Refer to BIF document #8002.
Watts Loss 2 3 3 7 7 7 11 11 9 11 14 16 18 9 9 11 11 12 17 20 20 23 19 27 35 39 24 32 36 46 46 52 40 40 44 48 48 55 55 85 90 100 100 100 120 26 26 27 32 35 42 51 42 42 42 47 51 54 60 57 64 64 86 105
Part Number 6CT 10CT 12CT 16CT 20CT 25ET 32ET 35ET 40ET 45ET 56ET 63ET 80ET 35FE 40FE 45FE 50FE 63FE 71FE 80FE 90FE 100FE 90EET 110EET 140EET 160EET 100FEE 120FEE 140FEE 160FEE 180FEE 200FEE 180FM 200FM 225FM 250FM 280FM 315FM 350FM 400FMM 450FMM 500FMM 550FMM 630FMM 700FMM 160MT 180MT 200MT 250MT 280MT 315MT 355MT 180MMT 200MMT 225MMT 280MMT 315MMT 355MMT 400MMT 450MMT 500MMT 560MMT 630MMT 710MMT
Carton Qty. 20 20 20 20 20 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 5 5 5 5 5 5 5 5 5 5 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Carton Weight 0.16 0.160 0.160 0.160 0.160 0.420 0.420 0.420 0.420 0.420 0.420 0.420 0.420 0.420 0.420 0.420 0.420 0.420 0.420 0.420 0.420 0.420 0.450 0.450 0.450 0.450 0.450 0.450 0.450 0.450 0.450 0.450 0.240 0.240 0.240 0.240 0.240 0.240 0.240 0.450 0.450 0.450 0.450 0.450 0.450 0.260 0.260 0.260 0.260 0.260 0.260 0.260 .0470 .0470 .0470 .0470 .0470 .0470 .0470 .0470 .0470 .0470 .0470 .0470
Figure
Fig 5
Fig 6
Fig 6
Fig 7
Fig 7
Fig 8
Fig 9
Fig 8
Fig 9
Note: 8ET, 12ET, 15ET, 20ET, 65EET and 75EET are available for replacement purposes on existing equipment (not UL recognized) till stocks last † 350V DC (IEC) rating. No UL Recognition.
For product data sheets, visit www.cooperbussmann.com/1/technicalinformation.html
BIF Document : 720024
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High Speed Fuse - Accessories 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.
Trip-indicator Fuselink Data Type
Dim. ‘A’ Max.
Voltage Rating
Type
Dim. ‘A’ Max.
Voltage Rating
TI250 TI500 TI600 TI700
37.6 47.5 55.7 61.8
250 500 600 700
TI1100 TI1500 TI2000 TI2500
98.4 120.8 147.5 198.3
1100 1500 2000 2500
A
0.8
6
21 6.35
Microswitch and Adaptor Type MAI Current Rating:
AC 50/60Hz resistive load @ 250 VRMS AC 50/60Hz resistive load @ 127 VRMS DC, resistive load @ 110 Vdc DC, resistive load @ 30 Vdc Maximum Working Voltage: Contact-to-contact (RMS) Contact-to-contact (RMS)
6
4A 6A 0.7 2
Dimensions in mm. 1mm = 0.0394” 1” = 25.4mm
1000V 1500V
2.4
3.6
5.2
5.2
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.
44 36
3.6
44 36
The ordering code references for these packs are listed below: 9.5 NO
Fuse Type ET EET FE FEE LET
Order Ref. EC-600 EC-600 EC-600 EC-600 EC-250
Fuse Type FM FMM LMT LMMT
NC NC
21
21
NO
Order Ref. MC-600 MC-600 MC-250 MC-250
Stud Fuseblocks Part No.
Stud Height
C5268-1 C5268-2 C5268-3 C5268-4 C5268-5
Stud Dia & Threads
1.00” 1.75” 0.75” 1.00” 1.75”
Universal Fuseblocks Modular Base 1BS101 1BS102 1BS103 1BS104
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Max. Voltage 600V 600V 600V 600V
Max. Fuse Current Rating 100A 400A 400A 600A
BIF Document 1206 1207 1208 1209
For product data sheets, visit www.cooperbussmann.com/1/technicalinformation.html
High Speed Fuse - Dimensions British Style - 240 Volts
Fig 1
Fig 3
Fig 2
Fig 4
British Style - 690 Volts
Fig 5
Fig 6
Fig 7
Fig 8 Dim. ‘A’ FM
Electrical Characteristics
80 - 85 Fig 9 MT 85 MMT/FMM 85
Total Clearing I2t
Arc Voltage
Power Losses
The total clearing I2t at rated voltage and at power factor of 15% are given in the electrical characteristics. For other voltages, the electrical I2t is found by
This curve gives the peak arc voltage UL, which may appear across the fuse during its operation as function of the applied working voltage Eg (RMS) at a
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
multiplying by correction factor K, given as a function of applied working voltage Eg (RMS). Curves below : 1) - LCT 2) - LET, LMT & LMMT
Curves below : 1) - CT 2) - ET, EET, FE, FEE, MT, MMT, FM & FMM
power factor of 15%.
function of the RMS load current lb, in % of the rated current.
Curves below : 1) - LCT 2) - LET, LMT & LMMT
Curves below : 1) - CT 2) - ET, EET, FE, FEE, MT, MMT, FM & FMM
For product data sheets, visit www.cooperbussmann.com/1/technicalinformation.html
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