Bussmann 170M3819 High Speed Square Body Fuse

Bussmann 170M3819 High Speed Square-Body Fuse is a 400 A, 690 V AC fast-acting protective device from Eaton’s Bussmann series, built for DIN‑1 mounting in industrial power circuits. This high‑speed square‑body fuse carries an aR (arc‑resistant) rating and an interrupt capability of up to 200 kA, enabling reliable protection for high‑current loads such as AC drives, power converters, and rectifiers. Its compact square‑body design fits standard control panels, with a body around 135 mm long, 45 mm wide, and 58 mm high, and it uses DIN 43‑620 blade‑end terminals for mounting. The 170M3819 family is commonly catalogued as 170M3819D in distributor literature, reflecting the same 400 A/690 V rating and fast‑acting performance. This fuse is part of Bussmann’s high‑speed fuse line designed to safeguard motors and drives by rapidly disconnecting on fault, helping minimize damage in drive and power conversion applications.