Bussmann LPS-RK-450 Fuse

The Bussmann LPS-RK-450SP is a 450 A, low-peak, time-delay, dual-element current-limiting fuse in an RK1-class cartridge designed for 600 V systems. It features a cartridge body and is non-indicating, delivering a 300 kA interrupting rating at 600 Vac and 100 kA at 300 Vdc. This fuse is intended for branch-circuit protection in commercial and industrial power distribution and is commonly used in motor control centers to protect feeders and control circuits while tolerating brief startup transients. As part of the Bussmann LPS-RK family, the 450SP variant meets UL 248-12 Class RK1 performance requirements, offering rugged protection with precise coordination for industrial switchgear and panel-fitted protection needs. The dual-element design helps limit fault energy and improve safety, reducing damage to downstream equipment during faults. In typical installations, it supports feeders and branch circuits up to 450 A, delivering reliable protection within 600 V systems and aligning with Bussmann's RK1 product ecosystem. This model is non-indicating and is designed for integration into standard Bussmann fusing schemes used in industrial control panels and motor control centers.