Solid State Relays

Opto 22 offers a complete line of SSRs, from the rugged 120/240/ 380-volt AC Series to the small footprint MP Series, designed for mounting on printed circuit boards. All SSRs feature 4,000 volts of optical isolation and are UL and CSA recognized. The innovative use of room-temperature liquid epoxy encapsulation, coupled with the unique heat-spreader technology, are key to mass producing the world’s most reliable solid state relays.


Every solid state relay is subjected to full load test and six times the rated current surge both before and after encapsulation. All Opto 22 SSRs are guaranteed for life.

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