The TSD-1000H-48 from Technology Dynamics is a DC to DC Converter with Input Voltage 72 to 144 V, Output Voltage 1 48 V, Output Current 1 21 A, Output Power 1000 W, Isolation Voltage 2 kV. Tags: Rack mount, Buck/Step down. More details for TSD-1000H-48 can be seen below.