Bussmann LPS-RK-300SP Low-Peak Class RK1 Fuse

The Bussmann LPS-RK-300SP Low-Peak Class RK1 fuse is a 300 A, 600 VAC dual-element, time-delay cartridge fuse designed to protect motor and transformer circuits from inrush while reliably interrupting faults. As part of the Low-Peak LPS-RK family, it uses RK1-class dimensions and a current-limiting, dual-element construction to balance withstand and clearing performance in demanding industrial power feeds. It is rated to interrupt up to 300 kA at 600 VAC and up to 100 kA at 300 VDC, enabling safe protection for high-energy equipment in 600 VAC systems. The cartridge-body fuse is commonly cataloged as LPS-RK-300SP and is stocked across major distributors; alternate references include 051712548533. These fuses are designed for motor protection, transformer protection, and general 600 V class protection in electrical panels and power-distribution circuits, with performance aligned to UL 248-12 for Class RK1 devices.