A solid state relay (SSR) is an electronic switching device that switches on or off when an external voltage (AC or DC) is applied across its control terminals. They serve the same function as an electromechanical relay, but as solid-state electronics contain no moving parts and have a longer operational lifetime.
SSRs consist of a sensor which responds to an appropriate input (control signal), an electronic switching device which switches power to the load circuitry, and a coupling mechanism to enable the control signal to activate this switch without mechanical parts. They may be designed to switch either AC or DC loads.
Suitable for wet ash and high corrosion proof requirements of the harsh environment, and the occasion of frequent switch, instead of the electromechanical relay is widely used in digital program-controlled device, temperature control device, data processing system and computer terminal interface circuit
Load current: 40A/60A
Load voltage: 24~480V/AC
Control voltage: 80~250V/DC
Control current: DC:, 3~25mA,
Work instruction: LED