The BMR458XX30/004 from Flex Power Modules is a DC to DC Converter with Input Voltage 40 to 60 V, Output Voltage 1 8 to 13.2 V, Output Current 1 54.2 A, Output Power 650000 mW, Isolation Voltage 750 to 2250 Vdc. Tags: Through Hole, Buck/Step down. More details for BMR458XX30/004 can be seen below.