A relay is an electrical switch that opens or closes a circuit when a control signal is applied to its coil. The 24VDC relay operates using a 24-volt direct current (DC) supply to activate its coil. When current flows through the coil, it generates a magnetic field that pulls or pushes contacts to open or close the circuit, allowing or interrupting the flow of current in the connected load. These relays are often used to control high-power devices with a low-power control signal, which is why they are crucial in various applications.

    The primary advantage of using a 24VDC relay is the standard voltage requirement that is commonly available in most electronic and industrial systems. A 24VDC relay can handle a wide range of load voltages and currents, making it adaptable to many different environments. The ability to control circuits with minimal power loss and without requiring complex circuitry is one of the key reasons for the popularity of these relays.