An electromagnetic relay is an electrically operated switch that uses the magnetic field generated by an electric current to open or close contacts within a circuit. It typically consists of a coil, an armature, and a set of contacts. When a current flows through the coil, it generates a magnetic field that attracts the armature, which in turn opens or closes the contacts. This allows the relay to control the flow of electricity in a secondary circuit.

    How Do Electromagnetic Relays Work?

    The operation of an electromagnetic relay begins when an input current is supplied to the coil. The current causes the coil to generate a magnetic field, which attracts the armature, a movable metal component. This mechanical movement of the armature either opens or closes the contacts of the relay, depending on the design of the relay.