Bussmann 170E8078 High Voltage Cartridge Fuse

The Bussmann 170E8078 is a high‑voltage, fast‑acting cartridge fuse rated 550 A at 1,000 V, designed for DIN 2 mounting and featuring an integral indicator. Part of Eaton’s Bussmann high‑speed square‑body family, this fuse is intended to protect AC and DC drives, power converters, rectifiers, and other high‑power drive electronics in industrial equipment by providing rapid interruption during short‑circuit events. It carries the AR designation and includes a built‑in indicator for quick status checks in control panels, helping maintain visibility of fuse health without removing panels. With its 1 kV rating and 550 A current rating, it is suitable for main‑line or feeder protection in applications such as motor drives, variable‑speed drives, and industrial power supplies where dependable high‑current protection at 1,000 V is required.