The Bussmann NSB FRS-R-200 fuse is a 200 A, 600 VAC/300 VDC dual-element time-delay device from Bussmann’s FRS-R (Fusetron) RK5 family. It is a non-indicating, current-limiting fuse with an interrupting rating of 200 kA at 600 VAC and 20 kA at 300 VDC, suitable for protecting feeders, motors, and control circuits in industrial and commercial equipment. With its 600 V rating and dual-element design, it provides reliable time-delay protection in power distribution and motor applications where fault isolation is critical.
