12-28-98 sb98107 rev. a bussmann form no. fwh 500 page 1 of 2 bif doc #720007 fwh 500v 35-1600a electrical characteristics ordering information dimensions curves rated i 2 t (a 2 sec) carton see page current clearing watts part carton weight figure or type rms-amps pre-arc at 500v loss number qty. (lbs) number (bif #) 35 34 150 8 fwh-35b ___________________________________________________________________________ 40 76 320 7.5 fwh-40b ___________________________________________________________________________ 45 105 450 7.5 fwh-45b 5 0.71 ___________________________________________________________________________ 50 135 670 7.5 fwh-50b ___________________________________________________________________________ 60 210 900 9.9 fwh-60b ______________________________________________________________________________________________ ___ 70 210 900 10.6 fwh-70b page 23 ___________________________________________________________________________ 80 305 1400 12.7 fwh-80b (35785304) ___________________________________________________________________________ 90 360 1600 15 FWH-90B 0.21 ___________________________________________________________________________ 100 475 2000 17 fwh-100b ___________________________________________________________________________ __________ _ 125 800 3500 25 fwh-125b ___________________________________________________________________________ 150 1100 4600 30 fwh-150b ___________________________________________________________________________ 175 1450 6200 35 fwh-175b 0.33 ___________________________________________________________________________ 200 1900 8500 40 fwh-200b fig. 1 ___________________________________________________________________________ __________ _ ____________ fwh 225 4600 23300 39 fwh-225a ___________________________________________________________________________ 500v 250 6300 32200 41 fwh-250a ___________________________________________________________________________ 275 7900 40300 46 fwh-275a ___________________________________________________________________________ 300 9800 49800 51 fwh-300a 0.57 ___________________________________________________________________________ 325 13700 63800 53 fwh-325a 1 ___________________________________________________________________________ 350 14500 72900 58 fwh-350a page 23 ___________________________________________________________________________ 400 19200 96700 65 fwh-400a ( 360) ___________________________________________________________________________ __________ _ 450 24700 127000 74 fwh-450a ___________________________________________________________________________ 500 29200 149000 84 fwh-500a 1.00 ___________________________________________________________________________ 600 41300 206000 108 fwh-600a ___________________________________________________________________________ __________ _ 700 55000 298000 120 fwh-700a ___________________________________________________________________________ 800 76200 409000 129 fwh-800a 2.14 ___________________________________________________________________________ __________ _ ____________ 1000 92000 450000 145 fwh-1000a ___________________________________________________________________________ 1200 122000 600000 180 fwh-1200a 4.62 page 23 ___________________________________________________________________________ _____________________ _ 1400 200000 1000000 210 fwh-1400a fig. 2 (35785304) ___________________________________________________________________________ 1600 290000 1400000 230 fwh-1600a 11.66 n interrupting rating 200ka rms symmetrical. 1 kg = 2.2 lbs 1 lb = 0.45 kg n watts loss provided at rated current. n 500 vdc rating applies to 35 through 800 amperes only. n see accessories on page 20. ?u.l. recognition on 35 through 1200 amperes only. ?
12-28-98 sb98107 rev. a 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. form no. fwh 500 page 2 of 2 bif doc #720007 fwh 500v 35-1600a order # fig. a b c d e f g h j fwh-35b-60b 1 3.188 0.813 1.593 2.541 2.193 0.344 0.719 0.125 0.518 fwh-70b-100b 1 3.625 0.947 1.736 2.853 2.807 0.352 0.750 0.125 0.375 fwh-125b-200b 1 3.625 1.156 1.836 2.892 2.768 0.344 1.000 0.188 0.406 fwh-225a-400a 1 4.340 1.500 2.090 3.440 2.750 0.410 1.000 0.250 0.750 fwh-450a-600a 1 4.340 2.000 2.090 3.530 2.780 0.410 1.500 0.250 0.780 fwh-700a-800a 1 6.340 2.500 2.090 4.970 3.440 0.530 2.000 0.380 1.300 fwh-1000a-1200a 1 6.969 3.000 3.219 5.465 4.475 0.625 2.375 0.438 1.120 fwh-1400a-1600a 2 see drawing dimensions a e d c f j g b h 10.219 3.219 0.625 4.25 0.75 3.5 6.219 0.125 0.5 1.625 1.750 8.969 500 400 250 100 1.5 1.0 0.5 0.3 0.2 0.15 e g k 1) 2) u l 2.0 1.6 1.2 10 3 800 600 500 400 300 100 400 300 200 500 e g 2) 1) 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 fig. 1: 35-1200 amp range fig. 2: 1400-1600 amp range dimension in inches. 1mm = 0.0394 1 = 25.4mm 1) 35-800 amp range 2) 1000-1600 amp range 1) 35-200 & 1000-1600 amp range 2) 225-800 amp range 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
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