The 72WS54.250HBR from Calex Manufacturing is a DC to DC Converter with Input Voltage 16 to 160 V, Output Voltage 1 54 V, Output Current 1 4.7 A, Output Power 250 W, Isolation Voltage 4.242 kV. Tags: PCB Mount, Buck-Boost. More details for 72WS54.250HBR can be seen below.