Bel Power Solutions TET4000-48-069RA is a 4000 Watt AC-DC power-factor-corrected (PFC) and DC-DC power supply that converts standard AC mains power or high voltage DC bus voltages into a main output of 48 VDC (42-58 VDC) for supplying 48 VDC power distribution in high performance and reliability data center equipment, servers, routers, and network switches. The TET4000-48-069RA meets international safety standards and displays the CE-Mark for the European Low Voltage Directive (LVD).