Bussmann 170M5566 Fuse

The Bussmann 170M5566 fuse is a high-speed square-body fuse rated for 1000 A at 690 V, designed to protect industrial power circuits with fast interruption during overcurrent events. As part of the Bussmann 170M family (now Eaton Bussmann), it uses a square-body, flush-end design with end connections specified as 2GKN/50 AR UC, offering compatibility with standard Bussmann/IEC equipment footprints and proven performance in high‑current installations. The device measures approximately 2.61 x 77 x 51 mm and is rated for AC circuits at 690 V, with IEC/UL-style ratings that support protection of feeders, switchgear, and motor-control centers that demand reliable, rapid fault clearing. This 170M5566 fuse is used in industrial power distribution gear and protective assemblies where a rugged, high-current fast-acting protection device is required, and it is selected when circuits require a 1000 A, 690 V fuse with square-body geometry and specific end-connection configuration to fit the equipment’s fuseholders.