Cooper Bussmann FWH-1000A Fuse

Cooper Bussmann FWH-1000A is a high-speed fuse rated for 1000 A, designed to interrupt fault currents quickly in high-current power electronics and distribution circuits. This 500 V class device belongs to Bussmann’s FWH family, now part of Eaton Bussmann, and is specified for operation up to 500 V AC with a 1000 A current rating. The FWH series is documented in Eaton’s high-speed fuse catalogs, which show a wide current range from 35 A up to 1600 A, indicating its intended use for heavy-duty protection in industrial equipment and power supplies. As a fast-acting protective device, the FWH-1000A is used where rapid interruption of overcurrent conditions is required to minimize damage to downstream components such as power semiconductors and DC link circuitry. The part number is commonly employed in systems that demand robust protection at high current levels while maintaining compact form factors within Bussmann’s comprehensive line of 500 V fuses.