Bussmann LPJ-50SP Low-Peak Class J Dual-Element Time-Delay Fuse

Bussmann LPJ-50SP Low-Peak Class J Dual-Element Time-Delay Fuse, 50A 600VAC

The Bussmann LPJ-50SP is a Low-Peak dual-element, non-rejection Class J time-delay fuse engineered to deliver reliable current-limiting overcurrent protection in demanding electrical systems. Rated 50-Amp at 600-Volt AC and 300-Volt DC, this fuse pairs a time-delay element with fast-acting current limitation, allowing it to ride through normal motor inrush and temporary overload conditions while still responding quickly to clear damaging short-circuit faults. As part of the Bussmann Low-Peak family of Class J fuses, the LPJ-50SP is designed as a non-rejection style fuse that fits standard Class J fuse holders, blocks, and disconnect switches used throughout industrial, commercial, and institutional facilities. Electricians and specifiers rely on the LPJ-50SP where dependable, code-recognized Class J overcurrent protection is required for branch circuits, feeders, motors, and transformers.

Key Features

• Amperage Rating: Rated 50-Amp, sized to provide dependable overcurrent protection for the connected branch circuit, feeder, or equipment load.
• Dual Voltage Rating: Rated 600-Volt AC and 300-Volt DC, allowing the LPJ-50SP to be applied across a broad range of AC and DC electrical distribution systems.
• Class J, Non-Rejection Style: Non-Rejection Class J construction fits standard Class J fuse holders, fuse blocks, and disconnect switches without requiring rejection-style clips.
• Dual-Element, Time-Delay Design: Dual-element, time-delay construction lets the fuse ride through normal motor starting inrush and temporary overload conditions without nuisance opening.
• Current-Limiting Protection: Current-limiting performance reduces peak let-through current and energy during short-circuit fault conditions, helping protect downstream conductors and equipment.
• Low-Peak Series: Part of the Bussmann Low-Peak line of dual-element, time-delay fuses widely specified for industrial, commercial, and institutional electrical systems.
• Space-Saving Class J Footprint: Class J fuse dimensions allow for compact fuse block and disconnect layouts compared to larger fuse classes.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Motor Branch-Circuit and Feeder Protection
• Transformer Overcurrent Protection
• Industrial and Commercial Electrical Distribution Systems
• Class J Fused Disconnect Switches and Fuse Blocks
• Circuits Requiring Time-Delay, Current-Limiting Protection
• Overload and Short-Circuit Fault Protection

Why Bussmann?

Bussmann Low-Peak fuses are engineered with dual-element, time-delay, current-limiting technology to deliver dependable circuit protection for demanding electrical applications. The LPJ-50SP's Class J, non-rejection design combined with its 50-Amp, 600-Volt AC and 300-Volt DC rating makes it a trusted choice for electrical professionals specifying Class J overcurrent protection for motors, transformers, and general branch-circuit and feeder applications in industrial and commercial facilities. Choosing genuine Bussmann Low-Peak fuses helps ensure consistent time-delay and current-limiting performance across a facility's fuse protection scheme.