The Solid State Relay (Static Relay) Overview

History of Relay The static relay is the next generation relay after electromechanical type.The Solid Static relays was first introduced in 1960’s. The term ‘static’ implies that the relay has no moving mechanical parts in it. Compared to the Electromechanical Relay, the Solid Static relay has longer life-span, decreased noise when operates and faster respond speed. However, it is not as robust as the Electromechanical Relay. Static relays were manufactured as semiconductor devices which incorporate transistors, ICs, capacitors, small microprocessors etc. The static relays have been designed to replace almost all the functions which were being achieved earlier by electromechanical relays.