The NTDC-3000L-28 from Technology Dynamics is a DC to DC Converter with Input Voltage 19 to 72 V, Output Voltage 1 28 V, Output Current 1 107 A, Output Power 3000 W, Operating Temperature -20 to 50 Degree C. Tags: Rack mount, Buck-Boost. More details for NTDC-3000L-28 can be seen below.