Bussmann ® FWH 500V Rated Current RMS-Amps Type 35-1600A Electrical Characteristics I2t (A2 Sec) Clearing Pre-arc at 500V † R ® Ordering Information Watts Loss Part Number Carton Qty. Carton Weight (lbs) 5 0.71 Dimensions Curves Figure Number BIF # 35 34 150 8 FWH-35B ___________________________________________________________________________ 40 76 320 7.5 FWH-40B ___________________________________________________________________________ 45 105 450 7.5 FWH-45B ___________________________________________________________________________ 50 135 670 7.5 FWH-50B ___________________________________________________________________________ 60 210 900 9.9 FWH-60B ______________________________________________________________________________________________ ___ 35785304 70 210 900 10.6 FWH-70B ___________________________________________________________________________ 80 305 1400 12.7 FWH-80B ___________________________________________________________________________ 0.21 90 360 1600 15 FWH-90B ___________________________________________________________________________ 100 475 2000 17 FWH-100B ___________________________________________________________________________ ___________ 125 800 3500 25 FWH-125B ___________________________________________________________________________ 150 1100 4600 30 FWH-150B ___________________________________________________________________________ 0.33 175 1450 6200 35 FWH-175B ___________________________________________________________________________ 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 ___________________________________________________________________________ 325 13700 63800 53 FWH-325A ___________________________________________________________________________ 0.57 1 360 350 14500 72900 58 FWH-350A ___________________________________________________________________________ 400 19200 96700 65 FWH-400A ___________________________________________________________________________ ___________ 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 ___________________________________________________________________________ 1000 92000 450000 145 FWH-1000A ___________________________________________________________________________ 1200 122000 600000 180 FWH-1200A ___________________________________________________________________________ 1400 200000 1000000 210 FWH-1400A ___________________________________________________________________________ 1600 290000 1400000 230 FWH-1600A †U.L. Recognition on 35 through 1200 amperes only. CSA Component Acceptance: 35 - 1600A. n Interrupting rating 200kA RMS Symmetrical. n Watts loss provided at rated current. n (500 Vdc/Interrupting rating 50kA) U.L. Recognition on 35 through 800 amperes only. 7-11-01 SB01191 2.14 ___________ 4.62 ______________________ 11.66 Fig. 2 1 kg = 2.2 lbs 35785304 1 lb = 0.45 kg Form No. FWH 500 Page 1 of 2 BIF Doc #720007 Bussmann ® † 35-1600A FWH 500V R ® 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). 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, Ib , in % of the rated current . 1.5 2.0 1.0 Kp 0.8 K 1.6 1.0 0.5 1) 0.3 0.2 2) 0.15 100 UL 1.2 0.6 0.5 103 0.4 800 0.3 600 2) 500 0.2 400 Eg 250 400 300 100 500 1) 35-800 Amp Range 2) 1000-1600 Amp Range 1) Eg 200 300 400 Ib 0.1 30 40 50 500 60 70 80 90 100% 1) 35-200 & 1000-1600 Amp Range 2) 225-800 Amp Range Dimensions Fig. 1: 35-1200 Amp Range Fig. 2: 1400-1600 Amp Range 10.219 A D 0.125 0.5 3.219 0.625 1.625 1.750 E C H G F 3.5 B 0.75 4.25 6.219 8.969 J 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 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. 7-11-01 SB01191 Form No. FWH 500 Page 2 of 2 BIF Doc #720007