Fuji Electric Co., Ltd. CS5F-1000 Super Rapid Fuse

The Fuji Electric CS5F-1000 Super Rapid Fuse delivers fast overcurrent protection in industrial electrical systems by interrupting fault currents quickly, safeguarding transformers, drives, and other critical components in harsh industrial environments, and helping prevent cascading faults. Rated 500 V and 1000 A with a 200 kA breaking capacity, this high-speed, fast-acting fuse is designed for use in power distribution panels, motor control centers, and variable frequency drive circuits where rapid fault interruption minimizes equipment damage and downtime while meeting industrial safety requirements. Manufactured by Fuji Electric, the CS5F-1000 is commonly used for equipment protection, panel upgrades, and system retrofits, and it serves as a direct replacement option alongside common equivalents such as Fuji CS5F-800, Bussmann KRP-1000, and Eaton HRK-1000.