FWP-350A is Eaton Bussmann’s high-speed semiconductor fuse from the FWP Series, designed to protect power‑electronic circuits with very fast interruption. This 350 A RMS, fast‑acting fuse uses a cartridge‑body, North American style packaging and is non‑indicating, making it compatible with standard Bussmann holders. Catalogs commonly list a 700 VAC and 700 VDC rating, with interrupt capacities up to 200 kAIC at AC and 50 kAIC at 700 V DC; some listings also note a 1.4 kV AC rating for certain variants. It is intended for semiconductor protection in high‑energy power systems where rapid disconnection of fault currents is critical.
