A power relay is an electrically operated switch that allows a low-power electrical signal to control a high-power circuit. The 15A rating refers to the maximum current the relay can handle, which is 15 amperes. These relays are typically designed with contacts that are made of durable materials, ensuring reliable operation under significant electrical loads. The 15A power relay is designed to manage electrical circuits that require moderate power, commonly used in industrial, automotive, and home automation systems.

    Working Principle of a Power Relay

    The operation of a 15A power relay is based on the electromagnetic principle. When a voltage is applied to the coil of the relay, it generates a magnetic field that attracts a movable armature. This armature controls the relay’s switch, allowing or interrupting the flow of current in the connected circuit. When the relay is de-energized, the spring returns the contacts to their original position, thus breaking the circuit. The simplicity and efficiency of the relay make it an indispensable component for applications where automation and control are needed.