The Eaton Cutler-Hammer HMCP003A0C circuit breaker (also listed as Westinghouse HMCP003A0C) is a style 6638C14G03 circuit protector rated at 3 A. It provides overcurrent protection for electrical circuits by interrupting current when the load exceeds its 3-amp rating, helping prevent damage to wiring and connected equipment. The HMCP003A0C designation identifies this exact part within the Cutler-Hammer family, with the style code 6638C14G03 used to verify form and function in installations that reference that legacy designation.
