High Speed Fuses
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High Speed Fuses Arc Voltage This curve gives the peak arc voltage, UL, which may appear across the fuse during its operation as a function of the applied working voltage, Eg, (rms) at a power factor of 15%. High Speed Fuses 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, Kp, is given as a function of the RMS load current, Ib, in % of the rated current. Electrical Characteristics 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, Eg, (rms). Power Losses Specifications Description: Ferrule style high speed fuses. Dimensions: See dimensions illustration. Ratings: Volts: — 500Vac/dc Amps: — 1-30A IR: — 200kA RMS Sym. — 50kA @500Vdc Agency Information: CE, UL Recognition 1- 30A & CSA Component Acceptance: 5 - 30A. • Watts loss provided at rated current. • See accessories on page 216. Features and Benefits Excellent cycling capability and DC performance Low arc voltage and low energy let-through (I2t) Low watts loss in a compact size Used with finger-safe holders/blocks Typical Applications DC common bus DC drives Power converters/rectifiers Reduced voltage starters For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa

High Speed Fuses Virtual Pre-Arcing Time In Seconds Prospective Current In Amps RMS Peak Let-Through Curve 104 6 4 Peak Let-Through Current Prospective Short-Circuit Current Symmetrical RMS For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa