arc voltage this curve gives the peak arc voltage, u l , which may appear across the fuse during its operation as a function 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 characteristics. 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 i 2 t (a 2 sec) rated catalog current clearing watts numbers size rms-amps pre-arc at 150v loss fwa-5a10f 5 1.6 8 1 fwa-10a10f 10 3.6 16 2.7 fwa-15a10f 10 x 38mm 15 14 55 3.3 fwa-20a10f ( 13 ? 32 x 1 1 ? 2 ) 20 33 130 3.8 fwa-25a10f 25 58 220 4.9 fwa-30a10f 30 100 400 4.9 fwa-35a21f 35 75 800 4.5 fwa-40a21f 21 x 51mm 40 100 1000 5.1 fwa-45a21f ( 13 ? 16 x 2) 45 130 1300 6 FWA-50A21F 50 170 1600 7.3 fwa-60a21f 60 250 2400 8.0 ? watts loss provided at rated current. ? see accessories on page 216. features and benefits ? excellent cycling capability and dc performance ? low arc voltage and low energy let-through (i 2 t) ? low watts loss in a compact size ? used with finger-safe holders/blocks typical applications ? dc common bus ? dc drives ? power converters/rectifiers ? reduced voltage starters ferrule ?fwa 150v: 5-60a dimensions - in (mm) amp dimensions range a b c 5-30 1.5 (38.1) 0.375 (9.5) 0.406 (10.3) 35-60 2.0 (50.8) 0.625 (15.9) 0.811 (20.6) u l e g 200 100 100 150 50 300 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 a b c fwa 5-30a (10 x 38mm) 35-60a (21 x 51mm) specifications description: ferrule style high speed fuses. dimensions: see dimensions illustration. ratings: volts: 150vac/dc amps: 5-60a ir: 100ka sym. agency information: ce, ul recognition 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 multiplying by correction factor, k, given as a function of applied working voltage, e g , (rms). 150 102 70 22 1.5 1.0 0.5 0.3 0.2 0.15 eg k 1) 2) 1) 5-30a range 2) 35-60a range data sheet: 720003 for product data sheets, visit www .cooperb ussmann.com/da tasheets/ulcsa 197 high speed fuses high speed fuses
for product data sheets, visit www .cooperb ussmann.com/da tasheets/ulcsa 198 high speed fuses ferrule ?fwa 150v: 5-60a 10 ? 2 4 6 8 10 1 2 2 4 6 8 2 10 2 2 4 6 8 10 3 2 4 6 2 6 4 10 0 2 6 4 10 1 2 6 4 2 6 4 2 6 4 6 4 2 6 2 4 10 ? 10 ? 10 ? 10 2 10 3 10 4 fwa-10a10f fwa-30a10f fwa-25a10f fwa-20a10f fwa-15a10f fwa-5a10f virtual pre-arcing time in seconds prospective current in amps rms 10 1 2 2468 2 10 2 2468 10 3 2 4 6 2 6 4 10 0 2 6 4 10 1 2 6 4 2 6 4 2 6 4 6 4 2 6 2 4 10 ? 10 ? 10 ? 10 ? 10 2 10 3 10 4 fwa-45a21f FWA-50A21F fwa-60a21f fwa-35a21f fwa-40a21f virtual pre-arcing time in seconds prospective current in amps rms prospective short-circuit current symmetrical rms peak let-through current 2 4 2 6 6 4 2 6 4 246 246 246 246 10 1 10 2 10 3 10 4 10 1 10 2 10 3 10 4 10 5 fwa-20a10f fwa-25a10f fwa-30a10f fwa-15a10f fwa-12a10f fwa-5a10f fwa-10a10f 2 prospective short-circuit current symmetrical rms peak let-through current 2 4 2 6 6 4 2 6 4 246 246 246 246 10 1 10 2 10 3 10 4 10 1 10 2 10 3 10 4 10 5 fwa-35a21f fwa-40a21f fwa-45a21f FWA-50A21F fwa-60a21f 2 peak let-through curve peak let-through curve fwa 35-60a: 150v (21 x 51mm) time-current curve fwa 5-30a: 150v (10 x 38mm) time-current curve data sheet: 35785317 data sheet: 35785305
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