Bussmann FRS-R-400 Dual Element Time Delay Fuse

The Bussmann FRS-R-400 Fusetron dual‑element time‑delay fuse delivers 400 A protection for 600 V class RK5 circuits in a non‑indicating, current‑limiting design. This dual‑element device tolerates brief overloads without nuisance trips and provides interrupting ratings of 200 kA at 600 VAC and 20 kA at 300 VDC. It uses a cartridge‑body construction with knife‑blade terminals for holder‑mount installations and measures about 11.63 inches long and 2.34 inches in diameter, with a 600 VAC/300 VDC operating rating. Cataloged within Eaton Bussmann’s Class RK5 FRS‑R family, the FRS‑R‑400 is specified for 400 A applications in 600 VAC systems, making it suitable for protection of power distribution and control circuits against short‑duration overloads while conforming to RK5, time‑delay fuse standards.