Bussmann FRS-R-50 Fusetron Dual Element Time Delay Fuse

FRS-R-50 Fusetron Dual-Element Time-Delay Fuse from Bussmann (Eaton) is a Class RK5, current‑limiting fuse rated at 50 A and 600 VAC / 300 VDC, designed to tolerate brief startup surges while protecting downstream circuitry. Its dual‑element, time‑delay design provides reliable protection for loads with inrush and it offers a 200,000 A interrupt rating at 600 VAC (and 20 kA at 250 VDC). The fuse features a cylindrical fiberglass body measuring 1.06 inches in diameter by 5.5 inches in length, with ferrule terminals for mounting in compatible holders and is a non‑indicating device. As part of the Fusetron FRS‑R family, it is specified in catalogues and data sheets for use in applications requiring slow‑blow protection on 50 A circuits up to 600 VAC / 300 VDC.