Cooper Bussmann FWH-700A Fuse

The Cooper Bussmann FWH-700A fuse is a fast-acting high‑speed semiconductor fuse designed to protect power electronics and high‑current loads. It is rated for 700 A and 500 V, suitable for 500 VAC or 500 VDC circuits, and belongs to the Bussmann FWH family of fast‑acting fuses. With an interrupting rating of 200 kAIC at 1000 VAC and 50 kAIC at 500 VDC, it can interrupt large fault currents quickly to minimize damage to downstream components. The FWH-700A is non‑indicating, offering simple, relay‑friendly operation, and provides multiple termination options including blade‑end to blade‑end and stud configurations to suit a variety of panel and busbar assemblies. This fuse is intended for rapid fault isolation in semiconductor power circuits, making it well suited for protecting power supplies, inverter modules, motor drives, and other high‑current electronic loads in industrial equipment. By preserving surrounding circuitry during short circuits, it helps prevent collateral damage and improves system reliability in environments powered by 500 V class distributions.