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VERTIV Liebert PSI5-1500RT120LI Lithium-Ion 2U Rack/Tower UPS

BH #VEPSI51500RL • MFR #PSI5-1500RT120LI
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VERTIV Liebert PSI5-1500RT120LI Lithium-Ion 2U Rack/Tower UPS
Key Features
  • Output: 1350W / 1500 VA
  • Input: 75-146VAC @ 60Hz
  • 6 x NEMA 5-15R Outlets
  • 1 x NEMA 5-15P Input Connection (10')
Keep crucial systems protected during a power surge with the PSI5-1500RT120LI Lithium-Ion 2U Rack/Tower UPS from Vertiv Liebert. Designed to keep crucial systems running long enough for proper shutdown in the event of a power surge or overage, this UPS features six NEMA 5-15R outlets, three of which are programmable. Capable of a total output of 1500 VA or 1350W, the PSI5-1500RT120LI supports input at 75 to 146VAC at 60 Hz and provides a user-selectable output of 100 to 125VAC. A 16A circuit breaker protects connected equipment. This UPS features a typical transfer time of 4 to 6 ms, and a runtime of 17.7 or 7.5 minutes at half or full load, respectively. The battery utilizes a sine waveform, ensuring smooth power output.
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VERTIV Liebert PSI5-1500RT120LI Overview

Keep crucial systems protected during a power surge with the PSI5-1500RT120LI Lithium-Ion 2U Rack/Tower UPS from Vertiv Liebert. Designed to keep crucial systems running long enough for proper shutdown in the event of a power surge or overage, this UPS features six NEMA 5-15R outlets, three of which are programmable. Capable of a total output of 1500 VA or 1350W, the PSI5-1500RT120LI supports input at 75 to 146VAC at 60 Hz and provides a user-selectable output of 100 to 125VAC. A 16A circuit breaker protects connected equipment. This UPS features a typical transfer time of 4 to 6 ms, and a runtime of 17.7 or 7.5 minutes at half or full load, respectively. The battery utilizes a sine waveform, ensuring smooth power output.

Utilizing user-replaceable, hot-swappable Lithium-Ion batteries, the PSI5-1500RT120LI features a recharge time of up to 100% in 1.9 hours. Connect to a host computer via a USB Type-B port and included cable. Users can also monitor status and performance using the integrated LCD display. An IntelliSlot port on the back of the unit allows for an optional communications card, enabling easy remote monitoring, startup, and restart. The PSI5-1500RT120LI incorporates a 10' power cable with an offset, right-angle NEMA 5-15P plug. A $400,000 Equipment Protection Plan ensures peace of mind in regard to connected equipment.

Fewer Battery Replacements
Lithium-ion batteries on average last twice as long as traditional VRLA batteries. That means less scheduled maintenance, reduced operating costs, and lower overall total cost of ownership.
More Runtime
The PSI5 Lithium-Ion UPS's internal batteries offer 7.5 minutes of runtime at full load, providing more runtime than lead-acid models.
High Power Density
Lithium-ion batteries can pack more power into smaller spaces.
Quicker Recharge
Get back to max capacity quickly after an outage with 100% capacity recharging in just 1.9 hours.
More Discharge Cycles
Lithium-ion batteries deliver up to 10x more charge and discharge cycles than VRLA batteries, further lowering total cost of ownership.
0.9 Output Power Factor
More usable power enables more connected loads, saving space and costs.
Wider Input Voltage Window
Prolongs battery life by allowing the UPS to maximize the use of utility power before transferring to battery when input exceeds specified limits.
Full Sequenced Battery Testing
The Liebert PSI5 UPS includes an automatic and manual self-diagnostic test feature. This provides a comprehensive analysis of the condition of the batteries within the UPS and will notify you when the internal batteries need to be replaced.
Advance Early Warning of UPS System Status
The Liebert PSI5 UPS offers multiple audible and visual alarms to immediately alert you to an input voltage fluctuation, output overload, low battery, or replace battery condition.
Battery-Backed Outlets
Connect ample equipment to the UPS via six NEMA 5-15R outlets, three of which are programmable. All outlets are protected against surges and backed by battery power.
Configurable Input Voltage Window
Allows the UPS to be properly matched to the incoming utility power and adjusts its input window and transfer points to supply regulated power to connected loads within the selected range.
Programmable Outlet Group
Extend run time when on battery power by power-cycling connected equipment and shedding less-critical loads.
Hot Swappable Batteries
Increase product life and provide prolonged UPS reliability. Batteries are easily replaced without disrupting power to connected equipment.
USB Communications
Power management functions provide monitoring of UPS status and manage the automatic orderly shutdown of the computer if a power outage ever exceeds the battery capacity of the UPS. Trellis Power Insight Shutdown Software is available from the manufacturer.
Remote Emergency Power Off
Allows the UPS to be remotely shut down during an emergency.
SNMP Communication Option
Add an optional Liebert IntelliSlot IS-UNITY communications card to enable SNMP and web-based management for the Liebert PSI5 UPS. The Liebert IntelliSlot UNITY communication cards provide network integration connectivity and allow you to monitor and control your UPS from your network management station or any PC.
Other SNMP Features
Sends both SNMP traps and emails for event notifications.
Auto-senses 10M/100M Ethernet connectors.
Compatible with shutdown software to ensure proper powering off of connected equipment.
IS-UNITY-DP Communications Card also supports Vertiv Liebert SN Series Environmental Sensors.
Allows remote monitoring, start-up, or restart for connected equipment.
UPC: 767041028003

VERTIV Liebert PSI5-1500RT120LI Specs

Key Specs
Total Outlets
6x NEMA 5-15R
Plug Type
NEMA 5-15P Offset Right-Angle
Maximum Wattage
1350 W
Full-Load Runtime
7.5 Minutes
General
Total Outlets
6x NEMA 5-15R
Protected Outlets
6x NEMA 5-15R (Battery and Surge)
Plug Type
NEMA 5-15P Offset Right-Angle
USB Charging Ports
No
SmartSlot Interface
1
Coax Protection
No
Data Line Protection
RJ11, RJ45
Communications I/O
USB via USB-B
Emergency Power Off (EPO) Support
Yes
Topology
Line Interactive
Transfer Time
4 to 6 ms
Power
Current
16 A (Circuit Breaker Rating)
Maximum Wattage
1350 W
Nominal Input Voltage
120 VAC
Input Voltage Range
75 to 146 VAC
Input Frequency
60 Hz (Auto Sensing)
Nominal Output Voltage
120 VAC
Output Voltage Range
100 to 125 VAC
Output Frequency
50/60 Hz ± 1% (Configurable)
Load Capacity
1500 VA
Maximum Efficiency
97%
Waveform
Sine Wave
Battery
Chemistry
Lithium Iron Phosphate
Full-Load Runtime
7.5 Minutes
Half-Load Runtime
17.7 Minutes
Recharge Time
1.9 Hours
User Replaceable
Yes
Replacement Battery
PSI5-1500LIBATKIT
Hot-Swap Support
Yes
Physical
Operating Conditions
32 to 104°F / 0 to 40°C at 20 to 90% Humidity
Noise Level
55 dBA
Certifications
CSA, FCC, NOM, REACH, RoHS, UL, WEEE, cUL
Cable Length
9.8' / 3 m
Rackmount Size
2 U (with Included Hardware)
Dimensions (W x H x D)
17.2 x 3.4 x 16.2" / 436.9 x 86.4 x 411.5 mm
Weight
28.3 lb / 12.8 kg
Packaging Info
Package Weight
41.995 lb
Box Dimensions (LxWxH)
23 x 22.8 x 10.4"

VERTIV Liebert PSI5-1500RT120LI Reviews

Solid product that performs as expected

By Tim
Rated 5 out of 5
Date: 2022-08-10

Great capacity for power backups.

See any errors on this page?

Do rails need to be purchased to mount these in a ...

Do rails need to be purchased to mount these in a rack?
Asked by: Scott
The VERTIV Liebert PSl5-1500RM1201U 1 RU Rackmount UPS, B&H # VEPSI51500RM, includes fixed rails in the box; the RMKIT18-32 slide rail kit is sold separately.
Answered by: Miguel M
Date published: 2025-12-08

Full-load runtime and half-load runtime??

Full-load runtime and half-load runtime??
Asked by: David
The VERTIV Liebert PSl5-1000RM1201U 1U Rack Mount UPS can run at Full load of 900 watts for 9 mins, or half load of 450 watts for 13 mins.
Answered by: dariusb
Date published: 2021-04-28

What is its size? and how much does it weigh?

What is its size? and how much does it weigh?
Asked by: David
Dimensions are as follows: 17.2" (438mm) Width x 1.7" (44mm) Height x 20.1" (511mm0 Depth. Weight of the unit is 36.4LBS (16.5KG) SHIPPING DIMENSIONS: 22.1" x 23.4" x 5.5" (540mm) x (595mm) x (140mm) MINIMUM AIRFLOW CLEARANCE IS 4.0" (100.0mm) - FRONT/REAR
Answered by: Zev
Date published: 2021-04-25
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