The PSK4812-9B1G from Bel Fuse is a DC to DC Converter with Input Voltage 58 to 144 V, Output Voltage 1 48 V, Output Current 1 12000 mA, Output Power 576000 mW, Operating Temperature -40 to 71 Degree C. Tags: Chassis Mount, Buck/Step down. More details for PSK4812-9B1G can be seen below.