What is power contactor?

A power contactor is an electromechanical switch used to control electrical power circuits. It allows for the remote operation of high-voltage loads such as motors, lighting, and heating systems by using a low-voltage control signal. When energized, the contactor closes its contacts to complete the circuit, enabling the flow of electricity, and when de-energized, it opens the contacts to interrupt the flow. Power contactors are essential in industrial and commercial applications for automation and safety.