Bussmann 170M5660 Fuse

Bussmann 170M5660 is a high-speed, square-body US-style fuse (FKE US style) from Eaton’s Bussmann IEC high-speed family. It is rated for 500 A and 690 V AC (IEC 660–700 V), with a 200 kA interrupting rating and UL aR classification, making it suitable for fast fault clearing in high‑current circuits up to the line voltage. The 170M5660 designation identifies a 170M-series high‑speed fuse in a square‑body, blade‑style package that conforms to US mounting conventions. Catalog and distributor listings consistently show this part as a 500 A, 690 V fuse, reinforcing its role in protection blocks, switchgear, and other industrial power‑distribution applications where quick interruption of fault current is required. With its combination of a 690 V rating and robust interrupt capability, the 170M5660 supports reliable protection for feeders and equipment in demanding electrical systems while remaining compatible with standard Bussmann 170M family geometries and mounting footprints.