for product data sheets, visit www .cooperbussmann.com/products/datasheet.asp 145 high speed fuses high speed fuses 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 correc- tion factor, k p , is given as a function of the rms load current, i b , in % of the rated current. features and benefits ? excellent dc performance ? low arc voltage and low energy let-through (i 2 t) ? low watts loss ? superior cycling capability typical applications ? dc common bus ? dc drives ? power converters/rectifiers ? reduced voltage starters square body din 43 620 1000v (iec): 20?25a 1000v (iec) 20?25a specifications description: square body din 43 620 blade style high speed fuses. dimensions: see dimensions illustration. ratings: volts: 1000vac amps: 20-225a ir: 150ka rms sym. agency information: ce, designed and tested to iec 60269: part 4, ul recognized. 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 elec- trical 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). 1,5 1,0 0,5 0,4 0,3 0,2 k eg 200 400 600 800 1000 *rated voltage 900v * 3 2,5 2 1,8 1,6 1,4 1,2 10 3 8 7 6 5 4 3 u l eg 200 400 600 800 1000 1,0 0,8 0,7 0,6 0,5 0,4 0,3 0,2 0,15 0,1 k p i b 30 40 50 60 70 80 90 100% dimensions (mm) type t size a b max d max e f g min h din 00 49 78.5 60 30 35 6 15 1mm = 0.0394 / 1 = 25.4mm
for product data sheets, visit www .cooperbussmann.com/products/datasheet.asp 146 high speed fuses square body din 43 620 1000v (iec): 20?25a 10 4 10 3 10 2 10 1 s 10 -1 10 -2 10 -3 10 -4 virtual pre-arcing time in seconds prospective current in ampere rms 10 10 2 10 3 10 4 20a 32a 40a 63a 100a 160a 225a * 50a 35a 25a 80a 125a 200a * 10 4 10 3 10 2 2x10 peak let-through current in amperes prospective short-circuit current symmetrical rms 10 10 2 10 3 10 4 amp 10 5 225a 200a 160a 125a 100a 80a 63a 50a 40a 35a 32a 25a 20a size 00 ?20-225a: 1000v time-current curve peak let-through curve * 200-225a fuses are derated to 900v catalog numbers catalog numbers electrical characteristics rated i 2 t (a 2 sec) type t current clearing indicator rated rms at rated watts for micro size voltage amps pre-arc voltage loss 170m2673 00 1000 20 15 110 8.5 170m2674 1000 25 28.5 210 9.5 170m2675 1000 32 53 390 11 170m2676 1000 35 69 500 12 170m2677 1000 40 105 760 13 170m2678 1000 50 215 1550 14 170M2679 1000 63 380 2750 16 170m2680 1000 80 815 5900 18 170m2681 1000 100 1550 11500 21 170m2682 1000 125 3000 22000 23 170m2683 1000 160 6250 45000 26 170m2684 900 200 12000 86500 31 170m2685 900 225 18000 115000 33 ? watts loss provided at rated current. ? microswitch indicator ordered separately. see accessories on page 179-180. rated current the rated current of this fuse range is given with open fuse bases connected to copper conductors according to iec 60269 part 1, table 10. when used in enclosed fuse bases/disconnects, derating factors have to be observed. please contact cooper bussmann for application assistance. data sheet: 17058506 cooper bussmann helps ford motor company implement electrical safety program all of the ford motor company facilities in the u.s., canada and mexico recently completed a safety upgrade to their electrical systems using cooper bussmann current limiting fuses. the automaker initiated a proactive program to enhance worker safety when working on electrical equipment. the program not only included the fuse change out, but also a short circuit current study, arc flash hazard analysis, affixing safety labels to equipment, and providing safety training and personal protective equipment (ppe) to workers, as needed. by using cooper bussmann ? current-limiting fuses in potential arc-flash situations the amount of electrical energy released is considerably less, thereby helping to reduce the risk of potential injury. did you know?
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