BUSSMANN FWH-300A Fuse

Powered by the Eaton Bussmann FWH high-speed fuse family, the FWH-300A is a 300 A RMS fast-acting fuse designed for heavy-current protection in AC and DC power circuits. It is rated for up to 1000 Vac and 800 Vdc, with an interrupt rating of 200 kAIC at 1000 Vac and 50 kAIC at 500 Vdc, providing rapid fault clearance to safeguard downstream components. The fuse features blade-end terminations (blade end x blade end) and comes in a compact 6x32 mm body, with overall dimensions around 1.69 in (length) × 1.61 in (height) × 4.52 in (width) and an approximate weight of 0.52 lb. It is non-indicating and carries UL Recognized, CSA Certified, RoHS compliant, and CE markings, reflecting standard electrical-safety conformance. This model is suitable for protection in power supplies, motor drives, inverters, UPS systems, and other high-energy applications where fast-acting protection at 300 A is required and where system coordination accommodates that current rating.