Bussmann LPJ-400SP 400A 600V Class J Dual-Element Time-Delay Fuse

The Bussmann LPJ-400SP is a 400-amp, 600-volt Class J dual-element time-delay fuse designed for superior overcurrent protection in commercial and industrial electrical systems. This low-peak fuse provides excellent short-circuit current limitation while offering time-delay characteristics that allow temporary motor starting currents and other harmless overloads without nuisance tripping.

Key Features:

• Dual-element construction combines overcurrent protection with time-delay functionality
• Class J design offers 200,000 AIC interrupting rating at 600VAC
• Current-limiting performance reduces potential damage to downstream equipment
• Compact dimensions: 41.40mm x 181.10mm for space-efficient installation
• Non-indicating design for standard industrial applications
• UL Listed and meets NEC Class J requirements
• Ideal for motor circuits, transformers, and feeder protection

The LPJ-400SP's time-delay feature makes it particularly suitable for circuits with inductive loads such as motors, transformers, and other equipment that experience high inrush currents during startup. The dual-element design ensures reliable protection against both overloads and short circuits while minimizing costly downtime from unnecessary fuse operation.