Bussmann By Eaton LPN-RK-300 Class RK1 Fast Acting Fuse

Bussmann by Eaton LPN-RK-300 Class RK1 fuse is a 300 A, 250 V AC protective device from Eaton’s Bussmann RK1 family. It is a low-peak, time-delay, dual-element, current-limiting fuse designed to tolerate brief inrush while safeguarding downstream circuits. As part of the RK1 class, it offers a high interrupting rating—up to 300 kA at 250 VAC on typical RK1 designs—and is intended for protection in power-distribution panels, feeders, and motor-control circuits in industrial equipment where reliable protection is essential. The LPN-RK lineup is designed to work with standard RK1 fuse holders and blocks, and Bussmann provides datasheets and installation guidance to ensure correct mounting and electrical fit. This 300 A variant is available in non-indicating and indicating configurations (e.g., SPI variants), giving users options for visibility of fault conditions in industrial electrical systems.