Bussmann By Eaton 170M4611 Semiconductor Fuse

The Bussmann by Eaton 170M4611 is a high-speed, square-body semiconductor fuse designed to protect power electronics in demanding HV/DC environments. It is rated for 350 A and 690 V, with an interrupt rating around 200 kA, enabling fast clearing of faults in DC common-bus systems, DC drives, and power converters/rectifiers. Classified as aR for semiconductor protection, this 170M series fuse delivers robust arc-quenching performance in a compact package suited for standard Bussmann square-body fuse mounts. The device protects solid-state devices on high-current DC buses, helping prevent damage from short circuits while minimizing nuisance trips in industrial drives and power conversion equipment. Typical applications include protection of power semiconductors in DC bus architectures, inverter and drive electronics, and rectifier stages where a 690 V rating and high interrupt capability are required. The 170M4611 variant is part of Eaton's Bussmann line of high-speed fuses for semiconductor protection, providing predictable response times and dependable overcurrent protection in demanding industrial environments.