Cooper Bussmann ECNR200 RK5 Class Fuse UL Listed

ECNR200 is a UL-listed Edison Bussmann RK5 class fuse rated for 200 A at 250 VAC, designed for feeder and branch protection in electrical panels and disconnects. It is a dual-element, time-delay fuse with blade-end terminals and a knife-blade body, intended for RK5 holders. The device delivers up to 200 kA RMS symmetrical interrupting current and is specified for 250 VAC and 125 VDC, with a typical 10-second rating at 500% overload. The physical footprint is 1.56 in by 7.13 in (39.6 x 181.1 mm), and UL listing is reflected in File E162363. This ECNR fuse is part of the Edison ECNR RK5 lineup for 200 A, 250 VAC applications, aligning with feeder/branch protection in industrial electrical systems.