Bussmann FWX-150A Semiconductor Fuse

The FWX-150A is Eaton Bussmann’s high-speed semiconductor fuse rated for 250 V and 150 A, engineered to protect power‑electronics circuits—from overcurrent by rapidly interrupting fault currents in devices such as rectifiers and other semiconductor power stages. This North American style cartridge‑body fuse is part of the FWX family and specifies a 150 A current rating at a 250 V rating. It carries an interrupt rating of up to 200 kAIC at AC and up to 50 kAIC at 250 V DC, enabling it to withstand large fault currents in demanding power electronics applications. As a fast‑acting device, the FWX‑150A is designed for semiconductor protection in high‑current circuits, including power converters and DC drives where rapid fault clearance is essential. The cartridge‑body form factor and high‑speed operation make it compatible with common Bussmann FWX mounting styles and North American equipment footprints.