12-28-98 sb98107 rev. a form no. fwp page 1 of 1 bif doc #720026 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. ferrule fwp 660v/700v (iec/u.l.) 20-100a dimensions k 1.4 1.2 1.0 0.6 0.8 0.7 0.9 0.5 0.4 0.3 200 300 400 500 600 700 e g u l 1.4 1.2 10 3 6 8 7 9 5 4 3 200 300 400 500 600 700 e g 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 58.0 (2.283") 15.0 (0.591") 22.2 (0.875") electrical characteristics ordering information dimensions curves rated i 2 t (a 2 s) carton see page current clearing watts part carton weight figure or size rms-amps pre-arc at 660v loss number qty. (kg) number (bif #) 20 23 260 4.6 FWP-20A22F 25 37 410 5.6 fwp-25a22f 32 55 605 7.0 fwp-32a22f 22 ? 58mm 40 68 750 8.5 fwp-40a22f 10 0.450 fig. 1 page 95 (?) 50 155 1600 9.5 fwp-50a22f (35785291) 63 280 3080 11 fwp-63a22f 80 600 6600 13.5 fwp-80a22f 100 1100 12500 16 fwp-100a22f n interrupting rating 200ka rms symmetrical. 1 kg = 2.2 lbs. 1 lb = 0.45 kg n watts loss provided at rated current. n consult bussmann for dc ratings. n see accessories on page 90. fig. 1: 20-100 amp range dimension in mm. 1mm = 0.0394 1 = 25.4mm 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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