Cooper Bussmann LPJ-4SP Dual-Element Time-Delay Fuse

Cooper Bussmann LPJ-4SP is a Class J dual-element time-delay fuse. This model, part of the LPJ series, provides overcurrent protection in electrical circuits that specify a Class J fuse form factor. The defining feature is its dual-element time-delay construction, which characterizes how the device responds to overload conditions with a built-in delay. Manufactured by Cooper Bussmann, the LPJ-4SP carries the LPJ-4SP designation within the Class J family, signaling compatibility with standard Class J fuse holders and assemblies. Use of this device is appropriate in applications requiring a compact, standardized time-delay protection solution that aligns with the Class J specification.