CPC1593 Isolated Solid State Relay (SSR) IXYS CPC1593 Isolated Solid State Relay (SSR) is a normally open (1-Form-A) SSR that offers integrated current limit with voltage and thermal protection. The load is not only protected, but also the relay itself, making the device highly effective in extremely harsh environments. CPC1593 bidirectional relay is ideally suited for advanced power management applications including in-rush current control, power supplies, industrial and process controllers, solenoid and valve controls, and HVAC. IXYS CPC1593 Isolated SSRs have UL, CSA, and EN/IEC approval.