SEI’s Wall/Rack Mount 48 Volt DC-UPS Series

“A DC Plant in a Box”

SEI’s Wall/Rack Mount 28 Volt DC-UPS Series

“A DC Plant in a Box”

DC-UPS Versions

SEI Wall/Rack Mount 48 Vdc UPS – 125 to 600 watts with internal batteries


Output Ports

Two individually fused and controlled ports are available.


  • 2.5 or 9 Ahr battery provides 10-150 minutes backup based on load.
  • Increased Battery Holdover with external Battery Pack or Battery Cabinet.
  • Hot Swappable without taking system down.
  • LVD (Low Voltage Disconnect) protects batteries from over-discharge.
  • Automatic Monitoring and Load Testing for Battery Replacement.
  • Optional Remote Alarm for AC Power/battery test failure indication.

For specifications, view the Product Information Sheets:


ISDN Power Products and DC UPS Systems from SEI are available on our GSA Contract GS-35F-0487W

For order information or technical support call us at 301-694-9601 or email us using our Contact Us form

System Engineering International, Inc.

5115 Pegasus Court • Suite Q
Frederick, MD 21704

Voice: (301) 694-9601
Fax: (301) 694-9608