The 72WS12.250HBR from Calex Manufacturing is a DC to DC Converter with Input Voltage 16 to 160 V, Output Voltage 1 12 V, Output Current 1 21 A, Output Power 250 W, Isolation Voltage 4.242 kV. Tags: PCB Mount, Buck/Step down. More details for 72WS12.250HBR can be seen below.