Industrial FH03 Thermal Overload Heater Element

The Westinghouse / Cutler Hammer FH03 Thermal Overload Heater Element provides precise thermal overload protection for low-current motors in industrial motor control systems. This FH-series heater is designed for use with A200 Series motor starters and overload relays, and is commonly installed in MCCs, magnetic motor starters, and industrial control panels for conveyors, HVAC equipment, automation machinery, and other industrial processes requiring reliable motor overload protection. Key specifications include a Full Load Amp Range of 0.28–0.30 A, mounting type described as overload relay installed, and a weight of approximately 0.014 lbs. It is intended for replacement or retrofit within FH-series assemblies and is compatible with magnetic motor starters and overload relays. Common replacements include Eaton FH03, Cutler Hammer FH03, and Siemens bimetal overload heater equivalent.