Brush XL50F50 Semiconductor Fuse 50A High Speed

The Brush XL50F50 Semiconductor Fuse is a 50 A, 500 VAC high-speed cartridge fuse designed to protect semiconductor devices and power electronics with ultra-fast overcurrent clearing. Its cylindrical body with ferrule end caps mounts in standard fuse holders or clip mounts, facilitating installation in industrial systems such as variable frequency drives (VFDs), UPS systems, rectifiers, DC power supplies, battery chargers, and motor-control equipment. With a High Breaking Capacity (HBC) interrupting rating and ultra-fast acting characteristics, it rapidly isolates faults to minimize component damage and downtime. Standards compliance includes IEC 60269-4 and BS 88, and the device is CE compliant. The XL50F series is marketed for semiconductor and power-electronics protection in industrial environments, and it is commonly used to replace or upgrade protection in equipment that demands fast fault clearing. Common replacements include Mersen A50QS50, Bussmann 50SFE, and Ferraz Shawmut A50QS50.