Liebert® PSI5-1100RT120N, Liebert® PSI5 2U Rack/Tower UPS, 1100VA/990W, bundle with IS-UNITY-SNMP

The Vertiv™ Liebert® PSI5 UPS, 1100VA 990W, is a compact, energy-efficient solution designed to safeguard media closets, small racks, active power factor correction (PFC) power supplies, conventional power supplies and other critical electronics. It also includes an IS-Unity-SNMP Communications Card. It provides cost-effective protection from power disturbances. With up to 10 minutes of battery backup time at half load and 2 minutes at full load, this reliable system allows ample time for an orderly shutdown during a power outage.


  • Battery backup provides ample time for an orderly shutdown of connected equipment
  • Liebert® PSI5 UPS operates at a high 0.9 output power factor
  • Available network communications card provides remote monitoringand power management capability — Local USB or SNMP via optional Vertiv™ Liebert® UNITY communication card
  • Liebert PSI5 UPS is compliant with the Restriction of Hazardous Substances Directive (RoHS)
  • Rotatable LCD Display allows users to view real-time conditions, alarm notices, and runtime information
  • The standard Liebert PSI5 UPS can accept external battery cabinets for long runtime applications


  • ULTIMATE POWER PROTECTION: The advanced pure sine wave UPS from Vertiv compensates for power fluctuations, protects against equipment damage, and prevents data loss during a power disturbance. Automatic voltage regulation (AVR) technology safeguards equipment against a range of utility power fluctuations without battery operation.
  • EASY MONITORING: The Vertiv™ Liebert® PSI UPS offers a compact 2U rackmount/tower configuration, with the LCD display panel rotating 90 degrees to make the readout easy to see in either configuration, including output overload, or low-battery or replace-battery warnings.
  • HIGH-END ELECTRONICS: With advanced pure sine wave power conditioning, the Vertiv™ Liebert® PSI UPS protects valuable electronic equipment from the damage power fluctuations can cause. The Vertiv™ Liebert® PSI5 UPS allows users to save their progress during power loss and safeguard expensive electronics when utility power fluctuates.
  • Eligible for the Vertiv™ Trade-In Program. Contact a Vertiv partner for discount rates and to calculate your savings
  • Not for sale in Vermont.