form no. page 1 of 2 bif doc #720031 bussmann square body ?flush end contact 1250v/1300v (iec/u.l.) 50-1400a electrical characteristics ordering information curves rated -bkn/75 -bkn/80 -bkn/90 -gkn/75 -gkn/90 current i 2 t (a 2 s) type k type k type k type k type k rms- clearing clearing watts indicator indicator indicator indicator indicator size amps pre-arc at 1000v at 1250v loss for micro for micro for micro for micro for micro bif # 50 135 815 1100 15 170m3388 170m3438 170m3488 63 215 1300 1750 20 170m3389 170m3439 170m3489 80 420 2500 3350 25 170m3390 170m3440 170m3490 100 750 4450 5950 30 170m3391 170m3441 170m3491 125 1450 9000 11500 35 170m3392 170m3442 170m3492 17056630 1* 160 2600 16000 21000 40 170m3393 170m3443 170m3493 200 5150 31000 41000 45 170m3394 170m3444 170m3494 250 9200 54500 73000 55 170m3395 170m3445 170m3495 315 18500 115000 150000 60 170m3396 170m3446 170m3496 350 27000 165000 220000 65 170m3397 170m3447 170m3497 400 53000 265000 335000 70 170m3448 160 1900 11500 15500 45 170m4388 170m4438 170m4488 200 3800 22500 30000 50 170m4389 170m4439 170m4489 250 7750 46000 61500 60 170m4390 170m4440 170m4490 315 15000 90000 120000 65 170m4391 170m4441 170m4491 1 350 20000 125000 165000 70 170m4392 170m4442 170m4492 17056632 400 29500 175000 235000 75 170m4393 170m4443 170m4493 450 42000 250000 335000 80 170m4394 170m4444 170m4494 500 69500 340000 435000 85 ?170m4395 170m4445 ?170m4495 550 95000 465000 590000 95 ?70m4396 170m4446 ?70m4496 630 130000 660000 100 ?70m4397 ?170m4447 ?70m4497 250 6500 38500 51500 65 170m5388 170m5438 170m5588 280 9350 55500 74500 70 170m5389 170m5439 170m5589 315 13000 77500 105000 75 170m5390 170m5440 170m5590 350 16500 97500 135000 80 170m5391 170m5441 170m5591 400 23000 140000 180000 85 170m5392 170m5442 170m5592 450 34000 205000 270000 90 170m5393 170m5443 170m5593 2 500 48000 285000 380000 95 170m5394 170m5444 170m5494 170m5594 170m5644 550 62000 370000 495000 100 170m5395 170m5445 170m5495 170m5595 170m5645 17056634 630 115000 575000 730000 110 ?170m5396 170m5446 170m5496 ?170m5596 170m5646 700 160000 795000 1050000 115 ?70m5397 ?170m5447 170m5497 ?70m5597 170m5647 800 245000 1200000 1550000 120 ?70m5398 ?70m5448 170m5498 ?70m5598 170m5648 ?900 360000 1750000 125 170m5499 170m5649 ?1000 480000 2350000 135 170M5500 170m5650 315 9500 58000 77500 85 170m6338 170m6538 170m6588 350 13500 81500 110000 90 170m6339 170m6539 170m6589 400 19500 120000 160000 95 170m6340 170m6540 170m6590 450 31000 185000 245000 100 170m6341 170m6541 170m6591 500 39000 235000 310000 105 170m6342 170m6542 170m6592 550 55000 325000 435000 110 170m6343 170m6543 170m6593 630 83500 495000 665000 115 170m6344 170m6544 170m6494 170m6594 170m6644 17056636 3 700 115000 705000 940000 120 170m6345 170m6545 170m6495 170m6595 170m6645 800 205000 995000 1300000 125 ?170m6346 170m6546 170m6496 ?170m6596 170m6646 900 305000 1500000 1900000 130 ?70m6347 ?170m6547 170m6497 ?70m6597 170m6647 1000 450000 2150000 2750000 135 ?70m6348 ?170m6548 170m6498 ?70m6598 170m6648 1100 575000 2800000 3600000 140 ?70m6349 ?70m6549 170m6499 ?70m6599 170m6649 ?1250 810000 3950000 145 170m6500 170m6650 ?1400 1250000 6000000 150 170m6501 170m6651 n interrupting rating 100ka rms symmetrical. 1 kg = 2.2 lbs. 1 lb = 0.45 kg n watts loss provided at rated current. n rated voltage (iec) ?1100v ?000v 1250v (consult bussmann for u.l. recognition/ csa component acceptance status.) n individual fuse weight: size 1* = 0.380 kg size 1 = 0.580 kg size 2 = 0.900 kg size 3 = 1.250 kg n microswitch indicator ordered separately. 7-11-01 sb01191 r
form no. page 2 of 2 bif doc #720031 bussmann the only controlled copy of this bif document is the electronic read-only version located on the bussmann network drive. all ot her copies of this document are by definition uncontrolled. this bulletin is intended to clearly present comprehensive product data and provide technical information that will help the en d user with design applications. bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. buss mann also reserves the right to change or update, without notice, any technical information contained in this bulletin. once a product has been selected, it should be tested by the user in all possible applications. square body ?flush end contact 1250v/1300v (iec/u.l.) 50-1400a 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 volt- ages, 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 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 . electrical characteristics a b d e e h g f size type a b d e f f gh 1* bkn + gkn/75 74 75 59 45 m8 t? - 18 unc-2b 5 17 1* bkn/80 80 81 59 45 m8 5 17 1 bkn + gkn/75 74 75 69 53 m8 t? - 18 unc-2b 8 20 1 bkn/80 80 81 69 53 m8 8 20 2 bkn + gkn/75 74 75 77 61 m10 ? - 16 unc-2b 10 24 2 bkn/80 80 81 77 61 m10 10 24 2 bkn + gkn/90 80 91 77 61 m10 ? - 16 unc-2b 10 24 3 bkn + gkn/75 74 76 92 76 m12 ?a - 13 unc-2b 10 30 3 bkn/80 81 83 92 76 m12 10 30 3 bkn + gkn/90 81 91 92 76 m12 ?a - 13 unc-2b 10 30 valid for fuses type -gkn/- dimension in mm. 1mm = 0.0394 1 = 25.4mm dimensions flush end contact: type -bkn/-, -gkn/- k 1.5 1.0 1.25 0.5 0.4 0.3 0.2 400 600 800 1000 1200 1400 e g u l 3 2.5 8 10 3 1.4 1.8 6 4 5 3 400 600 800 1000 1200 1400 e g k p 30 40 50 60 70 80 90 100% i b 1.0 0.8 0.4 0.5 0.6 0.3 0.2 0.1 - - - - - - dashed lines apply to the following amperages: size 1* 1 2 3 amp 400 500-630 630-1000 800-1400 7-11-01 sb01191 r
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