In order to provide a better user experience, this site uses cookies. Cookies: small text files, that are stored in the memory of your browser or device when you visit a website or open a message. There are different kinds of cookies: Session cookies: Extinguish with the end of the browser session and are valid during a particular browser session. Durable cookies: Are maintained after the browser session Third party cookies: are placed on your device from another site You can disable or remove cookies via the browser settings. Note that in different browsers, the settings are organized differently. Consult the manual. By using sured.info you consent to the use of cookies.
Who I am Data Privacy Disclaimer

Automotive glossary: What is a Relay?

Definition of Relay: A relay is an electrical component, which makes it possible to switch on and off one or more consumers, like the bulbs in the winkers of vehicles, via a second, controlling electrical circuit. Thereby the amperage of the controlling circuit can be far lower than the amperage, that is necessary to operate the consumers. In mechanical relays, the control currency engenders a magnetic field, which again moves a lever for switching the consumers on and off. The movement of this lever when switching the winker bulbs on and off causes the typical, clicking sound when winking. But now, in newer vehicles, electronic relays without moving parts are often built-in. At this, a familiar clicking sound when actuating the winker is often generated artificially by a speaker.

All definitions