Bussmann FWH-450A ACDC Fuse

The Bussmann FWH-450A is a high‑speed, 450 A fuse rated for 500 V AC and 500 V DC, part of Eaton’s Bussmann high‑speed fuse family designed for North American style stud‑mount installations in high‑current power electronics and motor drive assemblies. It carries an interrupting rating of 200 kAIC at 1000 VAC and 50 kAIC at 500 VDC, providing robust protection for fault currents in large DC buses, power converters, rectifiers, and other industrial power electronics. The series also lists an I²t pre‑arcing rating of 29,200 A²s, reflecting its rapid response to overcurrent events. Typical applications include DC buses, power converters, rectifiers, and other high‑current DC circuits in industrial equipment, as well as AC service in 500 V systems where applicable. The FWH‑450A uses a North American style stud‑mount construction for secure mounting in panels, and is part of the 500 V Bussmann line, offering reliable overcurrent protection for high‑power electronic systems without sacrificing selectivity in fused circuits.