high speed fuses for product data sheets, visit www .cooperb ussmann.com/pr oducts/da tasheet.asp 95 high speed fuses north american fwx 250v: 35-2500a fwx specifications description: north american style stud-mount and flush-end fuses. dimensions: see dimensions illustrations. ratings: volts: 250vac amps: 35-2500a ir: 200ka rms sym. agency information: ce, ul recognized & csa component acceptance on 35-800a fuses (20ka ir @250vdc). electrical characteristics total clearing i 2 t the total clearing i 2 t at rated voltage and at power factor of 15% are given in the electrical characteristics. for other voltages, the clearing i 2 t is found by multi- plying by correction factor, k, given as a function of applied working voltage, e g , (rms). arc voltage this curve gives the peak arc voltage, u l , which may appear across the fuse dur- ing its operation as a func- tion of the applied working voltage, e g , (rms) at a power factor of 15%. power losses watts loss at rated current is given in the electrical char acteristics. the curve allows the calculation of the power losses at load currents lower than the rated current . the correction factor, k p , is given as a function of the rms load current, i b , in % of the rated current . catalog numbers electrical characteristics rated i 2 t (a 2 sec) catalog current clearing watts number rms-amps pre-arc at 250v loss fwx-35a 35 50 230 4.2 fwx-40a 40 60 310 5.2 fwx-45a 45 80 390 5.7 fwx-50a 50 100 520 6.0 fwx-60a 60 140 740 8.1 fwx-70a 70 330 1400 7.2 fwx-80a 80 430 1850 8.1 fwx-90a 90 570 2450 9.0 fwx-100a 100 740 3150 10.0 fwx-125a 125 1130 4850 12.5 fwx-150a 150 1620 6950 15.7 fwx-175a 175 2170 9300 18.5 fwx-200a 200 2790 12000 22 fwx-225a 225 3210 14700 24 fwx-250a 250 3960 18100 27 fwx-275a 275 4720 21600 31 fwx-300a 300 6000 27300 32 FWX-350A 350 10600 48600 39 fwx-400a 400 14500 66100 44 fwx-450a 450 22100 101000 49 fwx-500a 500 28000 128000 54 fwx-600a 600 41100 188000 62 fwx-700a 700 48800 190000 72 fwx-800a 800 59000 230000 84 fwx-1000ah 1000 44000 360000 100 fwx-1200ah 1200 92000 750000 103 fwx-1500ah 1500 120000 880000 140 fwx-1600ah 1600 160000 1200000 140 fwx-2000ah 2000 320000 2300000 151 fwx-2500ah 2500 670000 4700000 163 ? watts loss provided at rated current. ? see accessories on page 106. features and benefits ? excellent dc performance ? low arc voltage and low energy let-through (i 2 t) ? superior cycling capability k p 1.0 0.8 0.4 0.5 0.6 0.3 0.2 0.1 30 40 50 60 70 80 90 100% i b 1.5 1.0 0.5 0.3 0.2 0.15 75 125 300 200 250 e g k 1) 2) u l 1.4 1.2 10 3 800 600 500 400 300 200 50 100 150 200 250 e g 1) 2) 1) 35-800a range 2) 1000-2500a range 1) 35-800a range 2) 1000-2500a range a e dc f j g b h a b c a b c d fig. 1: 35-800a fig. 2: 1000-1200a fig. 3: 1500-2500a dimensions (in) tapped amp thread range fig. a b c d e f g h j depth 35-60 1 3.19 0.81 1.59 2.59 2.25 0.34 0.63 0.13 0.52 70-200 1 3.13 1.22 1.59 2.44 2.19 0.34 1.00 0.19 0.47 225-600 1 3.84 1.50 1.59 2.94 2.25 0.41 1.00 0.25 0.75 700-800 1 3.84 2.00 1.59 3.03 2.28 0.41 1.50 0.25 0.78 1000-1200 2 2.59 3.00 1.50 3 ? 8 -24 x 1 ? 2 1500-2500 3 2.59 3.50 1.50 1.50 3 ? 8 --24 x 1 ? 2 1mm = 0.0394 / 1 = 25.4mm typical applications ? dc common bus ? dc drives ? power converters/rectifiers ? reduced voltage starters
for product data sheets, visit www .cooperb ussmann.com/pr oducts/da tasheet.asp 96 high speed fuses north american fwx 250v: 35-2500a 10 4 10 3 10 2 10 2 10 3 10 4 10 1 10 0 10 ? 10 ? 10 ? 10 ? 2 prospective current in ampere rms virtual pre-arcing time in seconds fwx-800a fwx-600a fwx-500a fxw-400a FWX-350A fwx-200a fwx-150a fwx-70a fwx-60a fwx-40a fwx-35a fwx-100a 10 3 2 2468 2 10 4 2468 10 5 2 4 6 2 6 4 10 0 2 6 4 2 6 4 2 6 4 2 6 4 6 4 2 6 2 4 10 ? 10 ? 10 ? 10 ? 10 2 10 1 10 3 10 4 fwx-2500ah fwx-2000ah fwx-1600ah fwx-1500ah fwx-1200ah fwx-1000ah prospective current in amperes rms virtual pre-arcing time in seconds fwx 1000-2500a(h): 250v time-current curve fwx 35-800a: 250v time-current curve fwx-150a fwx-100a fwx-70a fwx-60a fwx-45a fwx-35a fwx-200a fwx-300a fwx-400a fwx-600a fwx-800a 10 2 10 3 10 4 10 5 10 2 10 3 10 4 10 5 prospective short-circuit current symmetrical rms peak let-through current a b prospective short-circuit current symmetrical rms peak let-through current 2 6 4 2 6 4 246 246 246 10 3 10 4 10 5 fwx-2000ah fwx-1600ah fwx-1500ah fwx-1200ah fwx-1000ah 10 3 10 4 10 5 fwx-2500ah peak let-through curve peak let-through curve data sheet: 359 data sheet: 35785299
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