A relay is an electrically operated switch. Current flowing through the coil of the relay creates a magnetic field which attracts a lever and changes the switch contacts. The coil current can be on or off so relays have two switch positions and most have double throw (changeover) switch contacts.
We have relays in-stock and ready to ship for all applications, including Power, Reed, Signal, Solid State, Electromechanical, I/O Module and Time Delay, plus a wide variety of relay sockets, hardware and accessories.