High Speed Fuses High Speed Fuses North American FWA 150V: 70-1000A Arc Voltage FWA U L This curve gives the peak Specifications arc voltage, U , which may L Description: North American style 300 appear across the fuse dur- stud-mount fuses. ing its operation as a func- Dimensions: See Dimensions 200 tion of the applied working illustrations. voltage, E , (rms) at a g Ratings: 100 power factor of 15%. Volts: 150Vac E g Power Losses Amps: 70-1000A 50 100 150 Watts loss at rated current IR: 100kA Sym. (70-400A) 1.0 is given in the electrical Kp 200kA Sym. (450-1000A) 0.8 characteristics. The curve 20kA 150Vdc (70-800A) 0.6 allows the calculation of 0.5 100kA 80Vdc (70-400A) the power losses at load 0.4 Agency Information: CE, UL Recognized currents lower than the 0.3 rated current. The correc- Electrical Characteristics tion factor, K , is given as 0.2 p a function of the RMS load 2 Total Clearing I t 1.5 current, I , in % of the b K 2 I The total clearing I t at rated b 0.1 rated current. 1.0 30 40 50 60 70 80 90 100% voltage and at power factor of Catalog Numbers 15% are given in the electri- Electrical Characteristics cal characteristics. For other 2 2 0.5 Rated I t (A Sec) 2 1) voltages, the clearing I t is Catalog Current Clearing Watts Number RMS-Amps Pre-arc at 150V Loss found by multiplying by cor- 0.3 FWA-70B 70 470 4000 6.9 2) rection factor, K, given as a 0.2 FWA-80B 80 670 6000 7.7 function of applied working FWA-100B 100 1200 12000 9.0 Eg FWA-125B 125 1870 18000 11.2 voltage, E , (rms). g 0.15 FWA-150B 150 2700 26000 13.5 22 70 102 150 FWA-200B 200 4780 45000 17.6 1) 500-1000A Range FWA-250B 250 7470 70000 22.5 2) 70-400A Range FWA-300B 300 10760 100000 27.0 FWA-350B 350 15700 140000 30.6 FWA-400B 400 20300 180000 35.2 FWA-500A 500 39000 120000 35.0 FWA-600A 600 46000 140000 47.0 FWA-700A 700 75000 220000 49.0 Dimensions (in) FWA-800A 800 92000 280000 58.0 FWA-1000A 1000 170000 510000 60.0 Fig. 1: 70-400A Watts loss provided at rated current. 2.656 See accessories on page 106. 2.188 1.936 Features and Benefits 1.156 0.125 Excellent dc performance 2 Low arc voltage and low energy let-through (I t) 0.750 0.312 1.000 Low watts loss Superior cycling capability 0.438 Typical Applications Fig. 2: 500-1000A DC common bus DC drives 3.500 Power converters/rectifiers 2.438 Reduced voltage starters 1.250 0.250 1.000 1.500 0.406 1mm = 0.0394 / 1 = 25.4mm For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp 93High Speed Fuses North American FWA 150V: 70-1000A FWA 70-1000A: 150V Time-Current Curve 4 10 6 4 2 3 10 6 FWA-500A 4 FWA-600A 2 FWA-700A FWA-800A 2 10 FWA-1000A 6 4 2 Did You Know 1 10 6 4 2 Cooper Bussmann Equipped Solar Car 0 10 Wins American Solar Challenge Race 6 4 2 The University 1 10 of Missouri- FWA-70A 6 Rolla Solar Car 4 FWA-80A FWA-100A Team won the 2 FWA-125A FWA-150A 2 prestigious 10 6 American Solar 4 Challenge Race 2 recently with 3 10 circuit protection provided by Cooper Bussmann FWA-200A 6 FWA-250A 4 FWX series 80 amp semiconductor fuses. FWA-300A 2 FWA-350A FWA-400A 4 10 The grueling endurance test pitted UM-Rollas Solar 2468 2468 2 3 4 10 10 10 Miner IV against race teams from some of the Prospective Current In Amperes RMS most famous engineering schools in the nation. By Peak Let-Through Curve driving approximately 2,300 miles from Chicago to 6 10 Claremont (a suburb of Los Angeles), in just 51 hours, 47 minutes and 39 seconds, they set a race 6 4 record by more than four hours. FWA-400A FWA-350A 2 FWA-300A FWA-250A 4 10 FWA-200A FWA-150A 6 FWA-100A 4 2 3 10 6 FWA-80A FWA-70A 4 2 2 10 24 6 2 4 6 24 6 2 2 3 4 5 10 10 10 10 Prospective Short-Circuit Current Symmetrical RMS Data Sheet: 35785310 For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp 94 Virtual Pre-Arcing Time In Seconds Peak Let-Through Current