The PSB123-9IRG from Bel Fuse is a DC to DC Converter with Input Voltage 18 to 144 V, Output Voltage 1 12 V, Output Current 1 3000 mA, Output Power 36000 mW, Operating Temperature -40 to 71 Degree C. Tags: Chassis Mount, Buck/Step down. More details for PSB123-9IRG can be seen below.