BUSS FWX-50A Semiconductor Fuse

The FWX-50A is a Bussmann/Eaton FWX Series fast-acting semiconductor fuse designed to protect semiconductor loads in power electronics, delivering a 50 A current rating for rapid fault clearance. It is rated for 250 V AC/DC and offers an interrupting rating up to 200 kAIC at VAC, with a melting I²t of 100 A²·s, making it well-suited for protecting sensitive semiconductor devices in high-speed protection schemes. This non-indicating fuse is offered with blade-end (X blade-end) terminals or stud terminations to fit a variety of enclosures and mounting configurations. As part of the FWX family, it provides precise overload protection without visible indicators, aligning with applications that require fast response and compact protection solutions for power supplies and similar electronics. Widely stocked by major distributors and cataloged under the FWX fast-acting semiconductor fuse line, the FWX‑50A is a common choice for designers seeking reliable, standards-aligned protection for semiconductor circuits.