The SSRQ solid state relay is a zero-cross operating electronic module designed to switch single-phase AC power loads. Since there are no moving parts, noise, shocks, and vibration during the operation, the life and reliability of the SSR module, compared to these of the contact relays, are much higher. Thanks to a snubberless™ triac, SSRQ can switch both active and inductive loads up to 16 A at power voltage up to 400 VAC. The control input is optically isolated from the output and accepts AC or DC voltage signals.