Liebert PSI is a compact, line-interactive UPS system designed especially for IT applications such as network closets and small data centers. It provides reliable power protection for servers, critical nodes, network workstations, large network peripherals, network routers, bridges, and other electronic equipment.

The flexible design of Liebert PSI allows the UPS to be configured as a self-standing tower or to be rack-mounted within a 2U space. It is available in five capacities, and both 120V or 230V models.

View range now

  • Line-interactive UPS
  • Installs easily, with rack/tower configurable 2U size
  • Protects against downtime with internal battery, and optional extended battery cabinets
  • Offers flexible monitoring and communication capabilities
  • Provides six to seven battery-backed outlets depending on model size, allowing additional equipment to be connected to the UPS via the 15, 20 or 30 Amp receptacles
  • Configurable input voltage window allows the UPS to be properly matched to the incoming utility power
  • Automatic Frequency Sensing allows the UPS to automatically adjust to the input frequency, 50Hz or 60Hz
  • LED display panel rotates 90° to make the readout of the LED display easy to see in rack or tower position
  • Optional External Battery Cabinets provide extended runtime for applications that require longer backup time
  • Provides network surge protection for equipment connected to the UPS via the RJ-45
  • Offers multiple audible and visual alarms to immediately alert you to an input voltage fluctuation (buck/boost), output overload, low battery or replace battery condition
  • Greater than five minutes of battery backup time at full load when utility fails
  • Comprehensive analysis of the condition of the batteries within the UPS and will notify you when the internal batteries need to be replaced. The battery test feature can also be programmed for automatic operation using Liebert shutdown software
  • Allows fast and easy maintenance with user-replaceable hot-swappable batteries
  • Provides remote emergency power off for safe emergency shutdown
  • 0.9 Output Power Factor provides more power for your protected load, and more energy efficient operation
  • Offers the most competitive price in its class, when ordered as a Network Solutions Package with factory-installed Liebert IntelliSlot Web Card
  • Ships with batteries connected and charged, reducing installation time and costs
  • Protects your investment with a standard two-year warranty with paid shipping both ways. Also available with optional extensions of one year or three years
  • PCs
  • Network workstations
  • Servers
  • Network closets
  • Large network peripherals
  • VoIP

Liebert Micropod

Maintenance Bypass and Output Distribution Accessory

  • Manual switchover from UPS to utility power
  • Allows continuous operation for connected equipment during UPS maintenance or replacement
  • Servers
  • Installs with plug-and-play ease
  • Operates with any brand of UPS, 3kVA or smaller


  • Eight battery-backed outlets
  • Configurable input voltage window
  • Rotatable Display Panel
  • Automatic Frequency Sensing
  • Rack Rail Kit
  • Multiple Communications Options: Contact Closure, USB and SNMP

    Ideally suited for:

  • PCs
  • Network workstations
  • Servers
  • Network closets
  • Large network peripherals
  • VoIP

    Higher Availability:

  • Data line surge protection
  • Advance early warning of UPS system status
  • Up to five minutes of battery backup time at full load when utility fails
  • Full sequenced battery testing
  • Surge protection
  • Remote emergency power off
  • Hot swappable batteries

    Lowest Total Cost Of Ownership:

  • 0.9 Output Power Factor
  • Wider input voltage window
  • Reduced installation time and costs
  • Warranty Protection