Cooper Bussmann FRN-R-200RK5 Fuse

The Cooper Bussmann FRN-R-200RK5 Fusetron is a 200-amp, time-delay, dual-element cartridge fuse in the RK5 class, designed for branch-circuit protection at 250 VAC with a 125 VDC rating. This non-indicating, current-limiting fuse delivers a high interrupt rating of 200 kA at 250 VAC and 20 kA at 125 VDC, making it suitable for protecting motors, transformers, and power supplies in commercial and industrial equipment. The FRN-R series provides time-delay protection to tolerate motor-start surges, holding currents up to 5× the rated amperage for at least 10 seconds to reduce nuisance trips during startup. Typical applications include motor controllers, HVAC equipment, and other protection scenarios where reliable overload protection must accommodate startup inrush. As part of Eaton Bussmann's FRN-R RK5 lineup, this fuse combines robust performance with a durable RK5 form factor for use in compatible fuse holders and control panels.