Definition

A relay is an electrically operated switch or device that uses an electromagnet to control the opening or closing of one or more sets of contacts. It acts as an interface between low-power control circuits and high-power loads, allowing a small electrical signal to control a larger current or voltage. Relays are widely used in various applications and industries for their ability to provide electrical isolation, safety, and automation. Relays are valuable components in electrical and electronic systems, allowing for the remote control and automation of various devices and processes. They are a fundamental part of modern technology and play a critical role in everything from basic household appliances to complex industrial machinery.