The W9LT3880 from Acopian Technical Company is a DC to DC Converter with Input Voltage 110 to 350 V, Output Voltage 1 9 V, Output Current 1 27.2 to 38.8 A, Output Power 720 W, Isolation Voltage 0.3 kV. Tags: DIN Rail Mount, Buck/Step down. More details for W9LT3880 can be seen below.