Bussmann ® 70-1000A FWA 150V Rated Current RMS-Amps Type ® Electrical Characteristics I2t (A2 Sec) Clearing Pre-arc at 150V Ordering Information Watts Loss Part Number Dimensions Carton Qty. Carton Weight (lbs) Figure Number 1 0.18 Fig. 1 70 470 4000 6.9 FWA-70B _____________________________________________________________________________________ 80 670 6000 7.7 FWA-80B ____________________________________________________________________________________ __ 100 1200 12000 9.0 FWA-100B __ ____________________________________________________________________________________ 125 1870 18000 11.2 FWA-125B _____________________________________________________________________________________ 150 2700 26000 13.5 FWA-150B _____________________________________________________________________________________ 200 4780 45000 17.6 FWA-200B _____________________________________________________________________________________ 250 7470 70000 22.5 FWA-250B _____________________________________________________________________________________ FWA _______________________________________________________________________________ 300 10760 100000 27.0 FWA-300B_____ 150V 350 15700 140000 30.6 FWA-350B _____________________________________________________________________________________ 400 20300 180000 35.2 FWA-400B __________________________________________________________________________________________________________________________ 500 39000 120000 35.0 FWA-500A _____________________________________________________________________________________ 600 46000 140000 47.0 FWA-600A _____________________________________________________________________________________ 700 75000 220000 49.0 FWA-700A _____________________________________________________________________________________ 5 2.42 Fig. 2 800 92000 280000 58.0 FWA-800A _____________________________________________________________________________________ 1000 n n n n 170000 510000 60.0 FWA-1000A Interrupting rating 100kA RMS Symmetrical for ampere ratings 70-400. Interrupt rating 200kA RMS Symmetrical for ampere ratings 450-1000. Watts loss provided at rated current. 150 Vdc U.L. Recognition on 70 through 800 amperes only. Consult Bussmann for additional ratings. 1 kg = 2.2 lbs 1 lb = 0.45 kg Electrical Characteristics Total Clearing I2t The total clearing I2t at rated voltage and at power factor of 15% are given in the electrical characteristics. For other voltages, the clearing I2t is found by multiplying by correction factor, K , given as a function of applied working voltage, E g , (RMS). 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, Ib , in % of the rated current . 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%. 1.5 K 1.0 Kp 0.8 UL 1.0 0.6 0.5 300 0.4 0.5 1) 200 2) 100 0.3 0.2 0.3 0.2 0.15 22 Eg Eg 70 102 150 Ib 0.1 50 100 150 30 40 50 60 70 80 90 100% 1) 500-1000 Amp Range 2) 70-400 Amp Range 1-17-01 SB00233 Form No. FWA 150 Page 1 of 2 BIF Doc #720002 Bussmann ® FWA 150V 70-1000A Dimensions Fig. 1: 70-400 Amp Range 2.656 2.188 1.936 1.156 0.125 0.750 0.312 1.000 0.438 Fig. 2: 500-1000 Amp Range 3.500 2.438 1.250 1.000 0.250 1.500 0.406 Dimension in inches. 1mm = 0.0394∑ 1∑ = 25.4mm The only controlled copy of this BIF document is the electronic read-only version located on the Bussmann Network Drive. All other 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 end 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. Bussmann 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. 1-17-01 SB00233 Form No. FWA 150 Page 2 of 2 BIF Doc #720002