Bussmann FRS-R-15 Fuse

The Eaton Bussmann FRS-R-15 is a 15-amp, 600 V class RK5 time-delay fuse from the Fusetron series, designed for electrical and industrial protection with dual-element construction that tolerates inrush currents. It features 600 VAC and 300 V DC ratings in a 5-inch long, 13/16-inch diameter cylindrical body with ferrule-end terminations, making it suitable for panel-mounted fuse blocks in protection-critical circuits. Its interrupting ratings are 200 kA at 600 VAC and 20 kA at 300 V DC, delivering reliable short-circuit protection while allowing safe re-energization after faults. As a non-indicating fuse, its status isn’t visible without testing, so panel indicators or a separate status check are typically used in assemblies. Common applications include industrial controls, motor drives, and power supplies, where a 15 A protection device is appropriate for 600 VAC or 300 V DC circuits and where the RK5/FRS-R family is supported by standard fuse holders. This specific FRS-R-15 variant is widely stocked by distributors and retailers and represents a standard mid-range protection option within commercial and industrial electrical distribution systems.