Bussmann FRN-R-2 is a Class RK5 dual-element, time-delay fuse from the FRN-R family, rated 2 A at 250 V AC (also specified for 125 V DC) and designed for current-limiting protection in electrical systems. It uses ferrule-end terminations, with a body diameter of 0.56 in and an overall length of 2 in, making it compatible with RK5 fuse holders; it is non-indicating. With an interrupting rating of up to 200 kA at 250 VAC, it provides high fault-current protection while tolerating inrush or temporary surges. Typically used in low-voltage branch circuits such as power supplies and control electronics where a time-delay fuse is appropriate.
