Bussmann LPS-RK-400SP Low Peak Time Delay Fuse

The Eaton Bussmann LPS-RK-400SP Low Peak Time-Delay Fuse is a 400 A, RK1-class fuse from the Bussmann LPS family, featuring a dual-element, current-limiting design and a Time-Delay (TD) profile for circuits that tolerate brief overloads. It is rated for 600 VAC and 300 VDC, with interrupting capabilities of 300 kA at 600 VAC and 100 kA at 300 VDC, and it uses blade-end terminals for straightforward installation in compatible RK1 fuse holders. This non-indicating fuse conforms to UL 248-12 performance requirements for Class RK1 devices and is intended for branch-circuit protection in power distribution and control systems. The LPS-RK-400SP is part of a broad line of low-peak protective devices designed to fit standard RK1 footprints and provide reliable protection for large feeders and other high-current applications in industrial and commercial electrical installations. The 400SP variant is commonly selected for feeders and large-load circuits in industrial and commercial installations where high interrupt ratings and dependable time-delay protection are required.