The LPJ-100SP is a Bussmann Low-Peak Class J dual-element, time-delay fuse designed for 600Vac/300Vdc applications with a 100A current rating. It features a 300kA interrupting rating (Vac RMS symmetrical) and 100kA (Vdc), providing current-limiting protection that safeguards downstream components against thermal and magnetic effects of short-circuit currents. The fuse incorporates a 10-second minimum time-delay at 500% of rated current, minimizing nuisance openings from temporary overloads and transient surges while maintaining fast short-circuit protection. The dual-element design operates with lower resistance than ordinary fuses, resulting in cooler operation and improved reliability. This fuse is UL Listed (File No. JDDZ.E4273) and CSA Certified to Class J standards, making it suitable for commercial outlet protection, motor backup protection, and coordinated NEMA/IEC motor controller applications.