Bussmann ® Ferrule FWP 660V/700V (IEC/U.L.) Size Electrical Characteristics I2t (A2S) Rated Current Clearing RMS-Amps Pre-arc at 660V 1-50A ® Ordering Information 1 — — 2 — — 3 — — 4 — — 5 1.6 11 6 — — 14 ≈ 51mm 10 3.6 22 (·Ω¡§∑) 15 10 75 20 26 180 25 44 320 30 58 450 32 68 600 40 84 750 50 200 1800 n Interrupting rating 200kA RMS Symmetrical. n Watts loss provided at rated current. n (700 Vdc/Interrupting rating 50kA) U.L. Recognition. n CSA Component Acceptance: 5 - 30A. Watts Loss Part Number Carton Qty. Carton Weight (kg) — — — — 1.5 — 4 5.5 6 7 9 7.6 8 9 FWP-1A14F FWP-2A14F FWP-3A14F FWP-4A14F FWP-5A14F FWP-6A14F FWP-10A14F FWP-15A14F FWP-20A14F FWP-25A14F FWP-30A14F FWP-32A14F FWP-40A14F FWP-50A14F 10 0.225 Dimensions Curves Figure Number BIF # Fig. 1 35785307 1 kg = 2.2 lbs. 1 lb = 0.45 kg R Dimensions Fig. 1: 1-50 Amp Range 50.8 (2.000") 14.3 (0.563") 15.5 (0.610") Dimension in mm. 1mm = 0.0394∑ 1∑ = 25.4mm 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). 1.4 1.2 1.0 0.9 0.8 0.7 0.6 0.5 0.4 1.4 1.2 103 9 8 7 6 K 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 . 1.0 Kp 0.8 UL 0.6 0.5 0.4 0.3 5 1) 0.2 4 2) 0.3 200 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%. Eg Eg 3 300 400 500 600 700 200 300 400 500 600 700 0.1 30 40 50 Ib 60 70 80 90 100% 1) 5-30 Amp Range 2) 32-50 Amp Range 7-18-01 SB01191 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. Form No. Page 1 of 1 BIF Doc #720025

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