The W40LT1800 from Acopian Technical Company is a DC to DC Converter with Input Voltage 110 to 350 V, Output Voltage 1 40 V, Output Current 1 12.6 to 18 A, Output Power 720 W, Isolation Voltage 0.3 kV. Tags: DIN Rail Mount, Buck/Step down. More details for W40LT1800 can be seen below.