The 48C40FT300 from Acopian Technical Company is a DC to DC Converter with Input Voltage 48 V, Output Voltage 1 40 V, Output Current 1 2.1 to 3 A, Output Power 288 W, Isolation Voltage 0.3 kV. Tags: DIN Rail Mount, Buck/Step down. More details for 48C40FT300 can be seen below.