Solid State Relays with Heat Sink Manufacturers

Solid-state relay is an electronic switch, which, unlike an electromechanical relay. It contains no moving parts. It is supported with heat sink. The types of solid state relays are photo-coupled, transformer-coupled and hybrid solid state relay. A photo-coupled solid state relay is controlled by a low voltage signal which is isolated optically from the load. The control signal in a photo-coupled SSR typically energizes an LED which activates a photo-sensitive diode.