An
electrical relay is a device that is used to control the flow of electricity in a circuit. It consists of a coil of wire and a set of contacts, which are used to open or close the circuit. When an electrical current is applied to the coil, it creates a magnetic field, which causes the contacts to move and either open or close the circuit.
Electrical relays are used in a wide variety of applications, including automotive systems, home appliances, and industrial equipment. They are typically used to control high-voltage or high-current circuits, allowing them to be controlled by a lower-voltage or lower-current signal.
There are many different types of electrical relays available, including electromechanical relays, solid state relays, and reed relays. They may be used in a variety of different circuits, including AC and DC circuits, and they may have a variety of different contact configurations, such as normally open or normally closed. Electrical relays are an important component in many electrical systems, and they play a key role in ensuring the safe and efficient operation of those systems.