Curtis M-4 parts are components used in the manufacture of Curtis’s motor controllers, which can be used to control electric motor and motor-driven devices. Curtis M-4 parts are designed to meet rigorous standards for performance, longevity, safety, and quality assurance. These parts are typically composed of metal housings, switches, contactors, relays, and circuit boards, as well as other components. Curtis M-4 components are available in both standard and custom configurations to meet various application requirements.