Liebert PSI Line-Interactive UPS with IntelliSlot Web Card (PS1500RT3-120W)

Please note, the Liebert PS1500RT3-120W has been discontinued. To discuss alternative options, please contact your Server Racks Online sales representative.

The Liebert PSI PS1500RT3-120W is a 2U Line-interactive UPS system, 1500VA/1350W/120V, with a Network Solutions Package.  The Liebert PSI are compact, line-interactive UPS systems designed especially for IT applications such as network closets and small data centers. They provide reliable power protection for servers, critical nodes, network workstations, large network peripherals, network routers, bridges, hubs and other electronic equipment.  Liebert PSI Network Solutions Package has the same features as the standard model, but comes equipped with a factory-installed Liebert IntelliSlot IS-WEBRT3 Web Card, and includes the necessary communications connection cables.

This UPS model is rack/tower configurable. The UPS includes data line surge protection, transient voltage surge protection, and optional communications for shutdown and reporting. The UPS offers 8 output receptacles. A rack mounting rail kit is included as standard. External battery not available.

Liebert PS1500RT3-120W - Click to enlarge


Rack Units2U
Dimensions3.5"H x 17.3"W x 16.2"D

Liebert PS1500RT3-120W Features:

  • Flexibility:
    • Provides six to eight battery-backed outlets depending on model and size, allowing additional equipment to be connected to the UPS via the 15 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.
  • Higher Availability:
    • 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.
  • Lowest Total Cost Of Ownership:
    • 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.
  • Ideally Suited For:
    • PCs
    • Network workstations
    • Servers
    • Network closets
    • Large network peripherals
    • VoIP

Liebert PS1500RT3-120W Specifications:

Height 3.5 in. (88 mm.)
Width 17.3 in. (440 mm.)
Depth 16.2 in. (412 mm.)
Weight 47 lbs. (21 kg.)
Operating Temperature, ˚F (˚C) 32 to 104 (0 to 40)
Storage Temperature, ˚F (˚C) 5 to 104 (-15 to 40)
Relative Humidity 0% to 90%, non-condensing
Operating Altitude Up to 3000m (10,000 ft) at 35˚C (95˚F) without derating
Audible Noise <40 dBA, internal fan(s) Off; <45 dBA, internal fan(s) On
Power Rating, VA/W 1500VA/1350W
Input AC Parameters  
Surge Protection 570J
Voltage Range Without Battery Operation 83 to 159 VAC (configurable)
Frequency Range 45~65Hz, (0.5Hz)
Input Power Cord, 10ft (3m) attached NEMA 5-15P plug
Output Receptacles (8) NEMA 5-15R
Voltage (Normal Mode) 110/120/127 VAC (configurable)
Voltage (Battery Mode) 110/120/127 VAC; 5% before low-battery warning
Transfer Time 4-6 ms typical
Battery Waveform Sinewave
Battery Parameters  
Type Valve-regulated, non-spillable, lead acid
Recharge Time 5 hours to 90% of rated capacity, after full discharge into resistive load
Battery Backup Time  
Full Load 3 minutes
Half Load 9 minutes
Safety UL 1778, c-UL Listed
Emissions FCC Part 15, Class A
Network Surge UL 497 B
Transportation ISTA Procedure 1A Certification
Rail Kit (included) RAILKITPS3G-AEC