The PSS489-7 from Bel Fuse is a DC to DC Converter with Input Voltage 58 to 144 V, Output Voltage 1 48 V, Output Current 1 9000 mA, Output Power 432000 mW, Operating Temperature -25 to 71 Degree C. Tags: Chassis Mount, Buck/Step down. More details for PSS489-7 can be seen below.