Crydom ez240d12 compact solid state relays panel mount crydom ez240d5 a compact 5a solid state relay with a 24 to 280v ac operating voltage and a 3 to 15v dc control voltage designed for low profile applications and with an scr output suitable for heavy industrial loads crydom ez240d5 solid state relay 280vrms 5a max 4 15vdc control voltage