Small solid-state relay 40A single-phase DC to AC control CDG1-1AA/1DA/1DD 25/10A

Solid-state relays switch circuits using electronic components, without relying on mechanical contacts. They isolate the control terminal and load terminal through optical signals
It resembles an electronic switch, primarily consisting of three parts: input, isolation, and output. When you apply a small voltage signal to the input terminal, the internal light-emitting diode (LED) will emit light. The light signal passes through the isolation layer, triggering the semiconductor device (such as a thyristor) at the output terminal, allowing a large current to pass through, thereby driving the load to operate. The entire process involves no mechanical action, relying solely on the cooperation of light and electricity. Electrically, the input and output are disconnected, ensuring high safety