The QTCPDC-24-17 from Technology Dynamics is a DC to DC Converter with Input Voltage 42 to 56 V, Output Voltage 1 24 V, Output Current 1 17 A, Output Power 400 W, Operating Temperature -20 to 50 Degree C. Tags: Rack mount, Buck/Step down. More details for QTCPDC-24-17 can be seen below.