An Electromechanical Relay consists of a coil of wire, a movable armature, and one or more contacts. When electrical current flows through the coil, it generates a magnetic field, which attracts the armature, causing it to move and either open or close the contacts. The relay is typically used to control a higher power circuit using a smaller, low power signal. By switching the contacts between the open or closed states, the relay acts as an on-off switch for devices such as motors, lights, and other electrical appliances.

    Working Principle of Electromechanical Relays