An industrial control relay is a device that uses electrical energy to control the opening and closing of electrical circuits. It operates through a simple mechanism： when an electrical current flows through a coil, it generates a magnetic field that moves a mechanical arm or contacts, either opening or closing the circuit. These relays are designed to handle high voltages and currents in industrial environments, where they can be used for a wide range of functions such as automation, control, and protection.

    Functions of Industrial Control Relays