device that directly controls the motive power of actuated equipment, such as the circuit-breakers and relays that control the distribution and use of electric power, as well as the pilot valves that control hydraulic or pneumatic fluid circuits Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=394-34-14
device that directly controls the motive power of actuated equipment, such as the circuit-breakers and relays that control the distribution and use of electric power, as well as the pilot valves that control hydraulic or pneumatic fluid circuits