... .DC to AC,DC to DC,AC to AC. 2.Voltage:240V/480V/660V 3.Current 10-120A 1P/3P Solid State Relay 1.AC to DC,DC to DC,AC ... . -2500 Vrms optical isolation. -Both "Zero Voltage" & phase controllable "Random Switching" versions. -High voltage (1200 Vpk) versions for 480 Vrms and ... Vdc or 90~280Vac,18-36VAC Control) * Zero,Random,Analog switching all available * UL, CUL, CE, VDE certificate and RoHS ...