Solid State Relay Market Analysis The Solid State Relay Market was valued at USD 1.09 Billion in 2018 and is expected to reach USD 1.68 billion by 2030 with a compound annual growth rate (CAGR) of 5.12%. Solid state relays use a silicon-controlled rectifier (SCR), triode for alternating current (TRIAC), or switching transistor output instead of mechanical normally-open (NO) contacts to switch...