The CEFCO HS-300 is a current- and energy-limiting Form I Class H fuse (CEFCO-H) built for fast, high-energy circuit protection in industrial power systems. As a Form I, Class H device, it clamps fault energy to help protect equipment while allowing rapid interruption of fault currents. The HS-300 model identifies this specific member of CEFCO’s current-limiting H-series, designed for installation in power distribution panels, switchgear, and motor feeders where reliable interruption and energy limitation are required.
