A 24VDC relay is an electromechanical device that allows a low voltage electrical signal to control a high voltage circuit. It essentially acts as a switch that opens or closes contacts in response to the input voltage. These relays are powered by 24VDC, and they are primarily used for controlling high-current circuits using a low-voltage control signal. The 24VDC input voltage is commonly chosen because it strikes a balance between being energy-efficient and offering enough power to drive the relay mechanism.

    The most common applications for 24VDC relays include automation systems, industrial control, automotive systems, and electrical devices that require the switching of circuits. Relays ensure that circuits are activated only when needed, providing both protection and reliability.