High Speed Fuses High Speed Fuses British BS 88 690V: 6-710A Arc Voltage CT, ET, FE, EET, FEE, FM, FMM, MT, MMT U L 1500 This curve gives the Specifications 1) peak arc voltage, U , L Description: BS 88 style which may appear stud-mount fuses. 1000 across the fuse during its 2) Dimensions: See dimensions operation as a function illustrations. of the applied working 500 Ratings: voltage, E , (rms) at a g Volts: 690Vac/500Vdc power factor of 15%. E g Amps: 6-710A Power Losses 200 400 600 660 IR: 200kA RMS Sym. 1) CT Watts loss at rated 2) ET, FE, EET, FEE, FM, FMM Agency Information: CE, Designed and tested to: BS 88 current is given in the 1.0 Part 4, IEC 269 Part 4, UL Recognized. MT and MMT Kp electrical characteristics. 0.8 350Vdc (IEC) rating. Consult Cooper Bussmann for UL The curve allows the 0.6 Recognition status. 0.5 calculation of the power 0.4 losses at load currents Electrical Characteristics lower than the rated 0.3 2 Total Clearing I t current. The correction 0.2 1.6 2 factor, K , is given as a The total clearing I t at rated K p 1.4 function of the RMS load voltage and at power factor current, Ib, in % of the I of 15% are given in the 1.2 b 0.1 rated current. 30 40 50 60 80 90 100% electrical characteristics. For 70 1.0 other voltages, the clearing 0.8 Features and Benefits 2 I t is found by multiplying by 0.6 Excellent cycling capability correction factor, K, given as Excellent DC performance 0.4 a function of applied working 2 1) Low arc voltage and low energy let-through (I t) 2) voltage, E , (rms). 0.2 g Low watts loss E g 200 300 400 500 600 690 Typical Applications 1) CT, ET, EET, FE, FEE, MT, MMT DC common bus 2) FM, FMM DC drives Power converters/rectifiers Reduced voltage starters Dimensions (mm) Fig. 2: ET, FE Fig. 3: EET, FEE Fig. 4: FM, MT Fig. 5: FMM, MMT Fig. 1: CT 8.7 7.1 25.4 25.4 4 5.5 50 A 113 46 70 94 48 63.5 77 50 A 113 54.8 64.3 74.6 14 11.9 9.7 13.5 10.3 31.8 12.7 10.3 17.1 37 6.4 83 19 8.7 8.7 41 19.1 38.1 38 1mm = 0.0394 / 1 = 25.4mm Figs. 4 & 5 A Dimensions Type A FM 80-85mm FMM 80-85mm MT 85mm MMT 85mm Data Sheet: 720024 For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 191High Speed Fuses British BS 88 690V: 6-710A Catalog Numbers CT 6-20, ET 25-80A: 690V EElleeccttrriiccaall CChhaarraacctteerriissttiiccss 22 22 RRaatteedd II tt ((AA SSeecc)) Time-Current Curve CCaattaalloogg CCuurrrreenntt CClleeaarriinngg CClleeaarriinngg WWaattttss NNuummbbeerrss TTyyppee RRMMSS--AAmmppss PPrree--aarrcc aatt 441155VV aatt 666600VV LLoossss 4 10 6CT 6 1.8 8.5 12 2 6 4 10CT 10 7 30 48 3 12CT CT 12 10 40 65 3 2 16CT 16 16 66 110 7 3 10 20CT 20 32 150 220 7 6 25ET 25 25 150 250 7 4 25ET 32ET 32 32 190 350 11 2 32ET 35ET 35 52 310 500 11 35ET 2 10 40ET 40ET 40 103 600 900 9 6 45ET ET 45ET 45 103 680 1100 11 4 56ET 56ET 56 135 950 1500 14 63ET 2 80ET 63ET 63 171 1200 2000 16 1 10 80ET 80 360 2500 4000 18 6CT 6 10CT 35FE 35 33 130 200 9 4 12CT 40FE 40 52 180 300 9 2 16CT 45FE 45 76 270 450 11 20CT 0 10 50FE 50 103 380 600 11 6 63FE FE 63 135 480 750 12 4 71FE 71 210 600 950 17 2 80FE 80 250 900 1500 20 1 10 90FE 90 360 1300 2100 20 6 100FE 100 470 1800 2800 23 4 90EET 90 490 3000 4500 19 2 110EET 110 600 4000 6500 27 EET 2 10 140EET 140 1050 7000 12000 35 6 160EET 160 1500 10000 17000 39 4 100FEE 100 400 1600 2400 24 2 120FEE 120 540 1900 3100 32 3 140FEE 140 850 2500 3800 36 10 FEE 160FEE 160 1000 3700 5700 46 6 4 180FEE 180 1400 5300 8400 46 2 200FEE 200 1900 7100 11400 52 180FM 180 1400 7500 13500 40 4 10 24 68 22468 22468 1 2 3 10 10 10 200FM 200 2600 10500 18500 40 Prospective Current In Amps RMS 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 Peak Let-Through Curve 400FMM 400 10000 40000 72500 85 450FMM 450 15000 60000 105000 90 6 500FMM 500 20000 82000 150000 100 710MMT FMM 4 630MMT 550FMM 550 30000 120000 215000 100 560MMT 500MMT 630FMM 630 45000 180000 310000 100 2 450MMT 315MT 355MT 400MMT 700FMM 700 60000 245000 420000 120 280MT 355MMT 5 10 250MT 315MMT 160MT 160 2400 15000 25000 26 280MMT 200MT 6 180MT 180 3800 25000 38000 26 180MT 225MMT 160MT 200MMT 4 200MT 200 6000 40000 58000 27 180MMT 250MT MT 250 11500 80000 110000 32 2 280MT 280 16500 100000 150000 35 4 10 315MT 315 19000 125000 180000 42 355MT 355 22000 160000 200000 51 6 180MMT 180 1650 12000 18000 42 4 200MMT 200 2200 16000 23000 42 2 225MMT 225 3700 26000 40000 42 3 280MMT 280 6600 47000 70000 47 10 315MMT 315 8600 62000 91000 51 6 160EET 355MMT 355 13500 97000 140000 54 4 140EET MMT 110EET 400MMT 400 21000 150000 220000 60 80ET 90EET 2 63ET 450MMT 450 30000 220000 320000 57 56ET 45ET 20CT 500MMT 500 42000 300000 450000 64 2 40ET 10 16CT 35ET 12CT 560MMT 560 60000 430000 640000 64 32ET 10CT 6 25ET 6CT 630MMT 630 68500 500000 720000 86 4 710MMT 710 78000 600000 850000 105 2 Watts loss provided at rated current. Note: FC, 8ET, 12ET, 15ET, 20ET, 65EET and 75EET are available for replacement 1 10 purposes on existing equipment. 2 462 46 2 462 46 2 1 2 3 4 5 10 10 10 10 10 See accessories on page 195. Prospective Short-Circuit Current Symmetrical RMS Data Sheet: 35785312 For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 192 Virtual Pre-Arcing Time In Seconds Peak Let-Through Current