Cooper Bussmann High Speed Fuses Data Sheet
192
High Speed Fuses
British BS 88 — 690V: 6-710A
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
2
4
2
6
6
4
2
4
6
4
2
6
4
2
6
246246246246
10
1
10
2
10
3
10
4
10
5
10
1
10
2
10
3
10
4
10
5
2
20CT
16CT
12CT
10CT
6CT
80ET
63ET
56ET
45ET
40ET
35ET
32ET
25ET
710MMT
630MMT
560MMT
500MMT
450MMT
315MT 355MT 400MMT
280MT 355MMT
250MT 315MMT
280MMT
200MT
180MT 225MMT
160MT 200MMT
180MMT
160EET
140EET
110EET
90EET
Peak Let-Through Curve
CT 6-20, ET 25-80A: 690V
Time-Current Curve
EElleeccttrriiccaall CChhaarraacctteerriissttiiccss
RRaatteedd II22tt ((AA22SSeecc))
CCaattaalloogg CCuurrrreenntt CClleeaarriinngg CClleeaarriinngg WWaattttss
NNuummbbeerrss TTyyppee RRMMSS--AAmmppss PPrree--aarrcc aatt 441155VV aatt 666600VV LLoossss
6CT 6 1.8 8.5 12 2
10CT 10 7 30 48 3
12CT CT 12 10 40 65 3
16CT 16 16 66 110 7
20CT 20 32 150 220 7
25ET 25 25 150 250 7
32ET 32 32 190 350 11
35ET 35 52 310 500 11
40ET
ET
40 103 600 900 9
45ET 45 103 680 1100 11
56ET 56 135 950 1500 14
63ET 63 171 1200 2000 16
80ET 80 360 2500 4000 18
35FE 35 33 130 200 9
40FE 40 52 180 300 9
45FE 45 76 270 450 11
50FE 50 103 380 600 11
63FE FE 63 135 480 750 12
71FE 71 210 600 950 17
80FE 80 250 900 1500 20
90FE 90 360 1300 2100 20
100FE 100 470 1800 2800 23
90EET 90 490 3000 4500 19
110EET
EET
110 600 4000 6500 27
140EET 140 1050 7000 12000 35
160EET 160 1500 10000 17000 39
100FEE 100 400 1600 2400 24
120FEE 120 540 1900 3100 32
140FEE
FEE
140 850 2500 3800 36
160FEE 160 1000 3700 5700 46
180FEE 180 1400 5300 8400 46
200FEE 200 1900 7100 11400 52
180FM 180 1400 7500 13500 40
200FM 200 2600 10500 18500 40
225FM 225 3700 14500 26500 44
250FM FM 250 5200 20500 37500 48
280FM 280 7000 30500 55000 48
315FM 315 10000 40000 77000 55
350FM 350 15000 60000 105000 55
400FMM 400 10000 40000 72500 85
450FMM 450 15000 60000 105000 90
500FMM
FMM
500 20000 82000 150000 100
550FMM 550 30000 120000 215000 100
630FMM 630 45000 180000 310000 100
700FMM 700 60000 245000 420000 120
160MT 160 2400 15000 25000 26
180MT 180 3800 25000 38000 26
200MT 200 6000 40000 58000 27
250MT MT 250 11500 80000 110000 32
280MT 280 16500 100000 150000 35
315MT 315 19000 125000 180000 42
355MT 355 22000 160000 200000 51
180MMT 180 1650 12000 18000 42
200MMT 200 2200 16000 23000 42
225MMT 225 3700 26000 40000 42
280MMT 280 6600 47000 70000 47
315MMT 315 8600 62000 91000 51
355MMT
MMT
355 13500 97000 140000 54
400MMT 400 21000 150000 220000 60
450MMT 450 30000 220000 320000 57
500MMT 500 42000 300000 450000 64
560MMT 560 60000 430000 640000 64
630MMT 630 68500 500000 720000 86
710MMT 710 78000 600000 850000 105
• Watts loss provided at rated current.
• Note: FC, 8ET, 12ET, 15ET, 20ET, 65EET and 75EET are available for replacement
purposes on existing equipment.
• See accessories on page 195.
Data Sheet: 35785312
Catalog Numbers
4
10
6
4
2
3
10
6
4
2
2
10
6
4
2
1
10
6
4
2
0
10
6
4
2
Virtual Pre-Arcing Time In Seconds
–1
10
6
4
2
–2
10
6
4
2
–3
10
6
4
2
–4
10
2468
6CT
10CT
12CT
16CT
20CT
22468 2
1
10
Prospective Current In Amps RMS
10
25ET
32ET
35ET
40ET
45ET
56ET
63ET
80ET
2468
2
3
10
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