SSR 1.DC-DC,AC-AC,DC-AC, 2.single phase,three phase, 3.industrial/voltage/current 4.theory:solid ... -type solid-state relay (SSR) is a new non-contact electronic switching device with excellent switching performance, and it is designed ... fixedThe work instructions: LEDWeight: 135g(above 40A);90g(10A,15A) electronic single phase solid state relay