Relay (Relay Financial), is an all-in-one business banking and money management platform helping businesses understand what they're earning, spending & saving. Relay | Online Business Banking | On The Money, All The Time A relay is an electrically operated switch. It has a set of input terminals for one or more control signals, and a set of operating contact terminals.

Understanding the Context

The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations thereof. A Relay is a simple electromechanical switch. While we use normal switches to close or open a circuit manually, a Relay is also a switch that connects or disconnects two circuits. Electrical relays are switches that you turn on and off with electrical signals.

Key Insights

In this guide, you’ll learn how a relay works and how to use relays in your own electronics projects! A relay is an electromagnetic switch that opens and closes circuits electromechanically or electronically. A relatively small electric current that can turn on or off a much larger electric current operates a relay. Relays are electrically operated switches that open and close the circuits by receiving electrical signals from outside sources. Some people may associate “relay” with a racing competition where members of the team take turns passing batons to complete the race.

Final Thoughts

What is an Electrical Relay? | OMRON Device & Module Solutions - Americas A relay is an electrical switch that can be activated by a low-power signal. Learn more about what is a relay and their many applications here!