The PTCPDC-48-8 from Technology Dynamics is a DC to DC Converter with Input Voltage 22 to 32 V, Output Voltage 1 48 V, Output Current 1 8 A, Output Power 400 W, Operating Temperature -20 to 50 Degree C. Tags: Rack mount, Boost/Step Up. More details for PTCPDC-48-8 can be seen below.