The 48C28FT420 from Acopian Technical Company is a DC to DC Converter with Input Voltage 48 V, Output Voltage 1 28 V, Output Current 1 2.9 to 4.2 A, Output Power 288 W, Isolation Voltage 0.3 kV. Tags: DIN Rail Mount, Buck/Step down. More details for 48C28FT420 can be seen below.