7-18-01 sb01191 form no. page 1 of 2 bif doc #720004 bussmann british style bs 88 240v 6-900a electrical characteristics ordering information dimensions curves rated i 2 t (a 2 s) carton current clearing clearing watts part carton weight figure type rms-amps pre-arc at 120v at 240v loss number qty. (kg) number bif # 6 2 6 9 1.0 6lct 10 3.8 12 22 2.5 10lct lct 12 7 22 32 2.5 12lct 20 0.110 fig. 1 16 20 50 100 2.5 16lct 35785296 20 25 80 160 4.0 20LCT 25 18 120 250 4.0 25let 32 32 200 450 5.0 32let 35 50 320 600 5.0 35let 50 100 500 1400 7.0 50let let 63 180 1100 2200 9.0 63let 80 300 1900 3800 10.0 80let 10 0.310 fig. 2 35785293 100 600 3800 7500 10.0 100let 125 600 3800 7500 16.0 125let 160 1100 7000 16000 20.0 160let 180 1600 12000 29000 21.0 180let a 160 1100 7000 16000 17.0 160lmt 200 1500 10000 20000 28.0 200lmt 250 3200 20000 40000 28.0 250lmt lmt 315 6000 35000 75000 35.0 315lmt 1 0.180 fig. 3 355 8000 50000 100000 35.0 355lmt 35785294 400 14000 70000 160000 40.0 400lmt 450 18000 100000 220000 42.0 450lmt 400 6000 35000 80000 60.0 400lmmt 500 14000 80000 170000 64.0 500lmmt 630 24000 150000 300000 75.0 630lmmt lmmt 710 32000 200000 460000 77.0 710lmmt 1 0.370 fig. 4 35785295 800 52000 300000 600000 82.0 800lmmt 900 75000 400000 800000 97.0 900lmmt n interrupting rating 200ka rms symmetrical. n 150 vdc rating 1 kg = 2.2 lbs 1 lb = 0.45 kg n watts loss provided at rated current. n note: 7let, 10let, 12let and 16let are available for replacement purposes on existing equipment. n all fuses above have been tested at 318 vac. n see accessories on page 72. 56 41.8 26.2 17.7 19.1 12.7 7.1 9.7 fig. 1: lct fig. 2: let 47 38 28 6.4 8.4 8.7 4 5.5 dimensions dimensions in mm. 1mm = 0.0394 1 = 25.4mm
7-18-01 sb01191 form no. page 2 of 2 bif doc #720004 bussmann british style bs 88 240v 6-900a 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 dimensions 84 59 31 83 38 25.4 13.5 10.3 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 100 50 150 200 250 1) 2) e g k 750 500 250 100 200 300 1) 2) e g u l 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 84 59 31 41 38.1 25.4 10.3 13.5 fig. 3: lmt fig. 4: lmmt indicator (optional) dimensions in mm. 1mm = 0.0394 1 = 25.4mm 1) lct 2) let, lmt, lmmt 1) lct 2) let, lmt, lmmt 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.
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