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Quick tech specs
  • SPACE-SAVING 1U RACK: Get similar features as a 2U battery backup in a compact 1U rack space
  • REMOTE MANAGEMENT CAPABILITY: Add a communication card to this UPS to monitor devices remotely
  • MORE USABLE POWER: This single phase line interactive UPS has 0.9 output power factor
  • PROGRAMMABLE OUTLETS: Get 5 total outlets with 2 programmable outlets to prioritize critical loads
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Know your gear

The Vertiv Liebert PSI5 UPS - 1000VA 900W 120V 1U Line Interactive UPS is an energy-efficient UPS solution to protect and extend the life of your electronic devices. With Automatic Voltage Regulation (AVR), it supports active power factor correction (PFC) power supplies, IT applications, home and school electronics, and other office technology. This battery backup provides plenty of time for an orderly shutdown of critical equipment.


Ensure Availability
This rack mount UPS protects your systems from downtime and damage caused by power outages, brownouts, sags, surges or noise interference. The single phase UPS offers high power-density, with an output power factor of 0.9, AVR, and pure sine wave output on battery. It takes less than 6 milliseconds transfer time to battery.


Save Rack Space
This Vertiv Liebert PSI5 1U rack mount UPS delivers similar features and benefits as the 2U UPS counterpart but in a compact 1U form factor.


Monitoring Made Easy
This Vertiv Liebert PSI5 1kVA UPS comes with an LCD display panel to see output overload, or low-battery or replace-battery warnings. Add an optional Vertiv Liebert UNITY communication card and remotely monitor up to 50 UPS systems through the free Vertiv Trellis Power Insight Application.


Full Vertiv Warranty
The Vertiv Liebert PSI5 UPS, 1000VA-1440VA, 1U line interactive rack mount UPS is backed by a 2-year Vertiv UPS warranty with optional extensions for up to 5 years total coverage.

Availability: 4-6+ Weeks
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Vertiv Liebert PSI5 UPS - 1000VA 1350W 1U Line Interactive AVR Rack Mount

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