FRS-R-250 is a Bussmann Fusetron Class RK5 dual-element, time-delay fuse rated for 250 A at 600 V AC / 300 V DC, part of Eaton’s Bussmann series. It provides current-limiting protection for large loads in industrial power distribution and motor-control circuits. With an interrupting rating of 200 kA at 600 VAC and 20 kA at 300 V DC, and a non-indicating design, it tolerates short surges without nuisance trips. Common applications include power distribution panels, machine control gear, and renewable-energy inverters.
