Bussmann By Eaton FRS-R-1-1 Fusetron Fuse RK5

The Bussmann by Eaton FRS-R-1-1 Fusetron RK5 fuse is a 1 A, time-delay, dual-element, current-limiting protective device designed for Class RK5 branch-circuit protection. It is rated for 600 VAC and 300 VDC, enabling tolerance of inrush currents in loads such as motors and power supplies while still delivering fast fault clearing. With an interrupting rating of 200 kA at 600 VAC and 20 kA at 300 VDC, it safely interrupts high-energy faults in demanding electrical environments. The FRS-R family spans 1 A through 60 A, and the 1-1 designation identifies the 1 A variant within this RK5 line of Fusetron fuses. As a Bussmann brand product, it is part of the Fusetron RK5 fuse family, known for providing time-delay protection with robust short-circuit clearing in industrial and commercial equipment. Typical applications include control panels, motor starters, and power-distribution blocks where nuisance tripping must be minimized while protecting downstream circuits.