Bussmann LPJ90SP Class J Fuse

The Bussmann LPJ-90SP is a 90 A, 600 V AC / 300 V DC dual-element time-delay Class J fuse with a low-peak profile and a bolt-on mounting style. This cartridge-style protector belongs to Bussmann's LPJ family and is designed to tolerate brief inrush currents typical of power supplies, transformers, and motor-driven circuits while still delivering fast interruption in sustained faults. Rated to interrupt up to 300 kA at 600 VAC, the LPJ-90SP provides robust short-circuit protection for industrial panels and electrical distribution where high fault currents may occur. An open-fuse indication option is available on LPJ-series part numbers, enabling quick visual confirmation of fuse status without removing the fuse holder. The LPJ-90SP’s time-delay, dual-element construction balances inrush tolerance with reliable fault protection, making it suitable for general-purpose protection in control panels, feeders, and equipment enclosures that operate at medium voltage and require dependable protection during startup surges.