About Relay

A relay is a switching device used in electrical circuits to control high-power circuits with low-power signals. It allows a low-current input to control the switching of a high-current circuit. The relay works by using an electromagnetic coil that, when energized, moves a set of contacts, either closing or opening the circuit. Relays are widely used in automation systems and remote control applications because they can operate circuits without requiring direct manual intervention. They are designed in various forms, depending on the number and types of circuits they switch. For example, relays are available for constant use or for handling very high voltage and current, as well as for high-precision control systems. Relays are commonly used in applications such as home appliances, automobiles, and industrial machinery. They play an essential role in ensuring safety, such as protecting against overcurrent, and are key components in control circuits.