On-Off electronic board maximum 4kW for managing equipment with single-phase or three-phase 1-direction of travel motor. Through a setting it can change the single-phase 230VAC to three-phase 400VAC power supply. The board can be controlled by digital input, pushbuttons or electromechanical drives and has a 24VDC output to power a mains presence or operation light. It is equipped with micro switch and motor thermal consensus that can be excluded with a simple setting.