Hybrid relays combine a mechanical switch with a solid-state switch, and they are set up in parallel to control a single load.

Traditionally, isolated control of signal paths has been provided by the electromagnetic relay (EMR). The purpose of this application note is to present an alternative, the Solid State Relay (SSR), ...

Even though the function of single phase and three phase relays are quite similar, their applications can vary significantly. This is primarily due to the characteristics of three phase power circuits ...