The TSC 1257 from Traco Power is a DC to DC Converter with Input Voltage 80 to 160 V, Output Voltage 1 110 V, Output Current 1 1.5 A, Output Power 40 to 2500 W, Isolation Voltage 1 to 3 kV. Tags: Rack Mount, Buck-Boost. More details for TSC 1257 can be seen below.