Line Interactive UPS 1440VA/1350W 120V

The Vertiv Liebert PSI5-1500MT120 interactive mini-tower uninterruptible power supply (UPS) is designed to protect and extend the life of your electronic devices in school, home and office. It offers cost-effective protection from downtime and damage caused by power outages, brownouts, sags, surges or noise interference. Automatic Voltage Regulation (AVR) extends battery life and safeguards critical equipment. It ensures availability of critical IT applications such as network closets and small data centers. This battery backup allows orderly shutdown of critical equipment. Add an optional communication card and remotely monitor up to 50 UPS systems through the free Vertiv™ Trellis™ Power Insight Application. It has a 2-year Vertiv warranty with optional extensions for up to 5 years of total coverage.

Liebert PSI5-1500MT120 - Click to enlarge

Price: $695.00
NOW: $490.59
Save: $204.41
Dimensions5.7 in W x 19.1 in D x 8.7 in H

For more information see:

PSI5 UPS Brochure (PDF)

Quick Installation Guide (PDF)

  • Reliable power protection for servers, routers, security systems and other networking equipment used in retail stores, healthcare facilities, government offices, bank branches and other distributed IT applications.
  • Advanced pure sine wave output, the Vertiv Liebert PSI5 UPS compensates for power fluctuations, protects against equipment damage, and prevents data loss during a power disturbance.
  • Excellent 2-year advanced replacement no hassle warranty with optional extensions for up to 5 years.

The PSI5-1500MT120 UPS includes automatic voltage regulation (AVR) technology, which protects against utility voltage fluctuation, extends battery life by maximizing time on utility power, and provides premium protection from power disturbances. In battery mode, the PSI5 series delivers pure sine wave output to protect sensitive servers and networking equipment. With less than a 6 millisecond transfer time the PSI5-1500MT120 provides exceptional response time for an outage. It's also highly energy efficient, delivering up to 96% efficiency at full load in normal operating mode.

Liebert PSI5-1500MT120 Key Benefits:

  • POWER PROTECTION: The 1440VA UPS has AVR to correct power disturbances, outages, and inconsistencies.
  • LCD DISPLAY: Monitor run time, load capacity, battery status and input/output voltage and frequency in rack or tower configurations.
  • LOW TOTAL COST OF OWNERSHIP: Fewer/no battery replacements over the life of the UPS.
  • 2-YEAR ADVANCED REPLACEMENT WARRANTY: Vertiv backs this UPS with a 2-year advanced replacement warranty including battery.
  • MORE USABLE POWER: This single phase line interactive UPS has 0.9 output power factor.
  • NO INSTALLATION: This plug-and-play battery backup.
  • PROGRAMMABLE OUTLETS: Get 5 total outlets with 2 programmable outlets to prioritize critical loads.
  • REMOTE MANAGEMENT CAPABILITY: Add the IntelliSlot Unity Card (IS-UNITY-SNMP) to remotely monitor devices.

The PSI5-1500MT120 Package Includes:

  • PSI5-1500MT UPS
  • USB Type A to USB Type B cable 1.8 meter (6ft) in length
  • Printed quick start guide with safety instructions
  • Safety and regulatory statements

PSI5-1500MT120 Specifications:

Width 5.7in. (145 mm.)
Depth 19.1 in. (484 mm.)
Height 8.7 in. (220 mm.)
Weight 40.1 lbs. (24.3 kg.)
Operating Temperature, °F (°C) 32 to 104 (0 to 40)
Storage Temperature, °F (°C) -5 to 120 (-15 to 50)
Operating / Storage Relative Humidity 20%-90%, non-condensing
Capacity VA/W 1440 / 1350
Nominal Voltage Setting 120VAC Default; 100/110/115/125VAC User Selectable
Frequency Range 55~65Hz (57~63Hz Battery to Normal Comeback)
Surge Protection ANSI C62.41, Category A, Level 3 1372J
Input Plug NEMA 5-15P, offset 90-deg type, 10ft (3m) Attached cord
Battery Waveform Pure Sine Wave
Transfer Time 4 - 6ms Typical
Battery Run Time*  
Full Load 6 minutes
Half Load 18 minutes
Audible Noise < 45 dB in line mode, < 55 dB in battery mode
Non-Programmable Receptacles (3) NEMA 5-15R
Programmable Receptacles (3) NEMA 5-15R
EMI Classification FCC Part 15, Class B
Safety UL 1778, c-UL-us Listed
Network Surge UL 497 B
Transportation Transportation ISTA Procedure 1A Certification
Warranty 2 year standard warranty

* Battery run time may vary depending on load

Get informative runtime data for various load levels with Vertiv Runtime tool at

Find support for your Liebert PSI5-1500MT120 at

Liebert IntelliSlot Unity SNMP Communications Card
Liebert IntelliSlot Unity SNMP Communications Card
Add support for remote management for your Vertiv Liebert power and cooling equipment