Bussmann LPJ-40SPI Low-Peak Dual-Element Time-Delay Fuse

LPJ-40SPI is a 40 A, 600 VAC dual-element, time-delay fuse in Bussmann’s Low-Peak LPJ Class J family, engineered to tolerate inrush currents while protecting circuits from short circuits. This indicating version (SPI) provides open-fuse indication for quick status checking and uses ferrule-end terminations for secure, tool-free connections. Rated for 600 Vac / 300 Vdc with interrupt capabilities of 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc, it combines a dual-element, current-limiting design with time-delay characteristics to handle motor starts and other surge-heavy loads. The unit measures 2.36 inches long, 1.6 inches high, and 1.6 inches wide, and weighs about 0.105 pounds. It’s CE marked and RoHS compliant, making it suitable for industrial control panels, power supplies, and other Class J protection roles where reliable motor protection and clear fuse status are important.