Bussmann by Eaton FWH-70Ba Semiconductor Fuse

Bussmann by Eaton FWH-70Ba semiconductor fuse is a high‑speed, fast‑acting protective device designed to interrupt fault currents in power electronics circuits. It is rated for 70 A at 500 V and belongs to Eaton’s Bussmann FWH family of high‑speed semiconductor fuses, intended to protect semiconductor devices, DC buses, drives, and power converters. The suffix “Ba” denotes a variant introduced within the FWH‑70 through FWH‑100 family, per Eaton’s product change notice. Typical applications include protection of power supplies, DC link buses in motor drives, inverters, and rectifier modules where rapid fault interruption minimizes damage to sensitive circuitry. The FWH family uses blade‑end connections common to semiconductor fuses, and is widely stocked by distributors such as Mouser and Grainger, reflecting its role as a standard protection device in industrial power electronics.