BUSS FRN-R-5 Fusetron Dual Element Class RK5 Fuse

The BUSS FRN-R-5 Fusetron is a 5 A, 250 V dual-element, time-delay fuse from Eaton’s Bussmann FRN-R RK5 family. It is a current‑limiting, non‑indicating device with ferrule‑end terminations designed for standard RK5 fuse holders, providing reliable protection for circuits that may experience brief inrush. With an interrupting rating of 200 kA at 250 VAC and 20 kA at 125 VDC, it protects power supplies, control panels, and small motor or transformer applications while tolerating short surges without nuisance blows. The FRN-R series is UL listed and specifies 250 VAC and 125 VDC operation, making FRN-R‑5 a precise fit for 5 A protection in 250 VAC systems that require a durable, time-delay, current‑limiting fuse in a cylindrical body.