Liebert GXT3 On-line UPS (GXT3-3000RT120)

Liebert GXT4 On-Line UPS, 3kVA / 2700W, 120VAC
Liebert GXT4 On-Line UPS, 3kVA / 2700W, 120VAC
3000VA / 2700W, (1) L5-30R & (6) 5-20R, NEMA L5-30P Plug, 10ft Cord (120VAC)

Please note, the Liebert GXT3-series was replaced by the Liebert GXT4-Series. For additional upgrade options, contact your Server Racks Online sales representative at 1-866-722-5776.

The Liebert GXT3-3000RT120 is a 2U 3000VA 120V Rack Tower On-line UPS.  The Liebert GXT3 true on-line UPS combines low cost of ownership with rich functionality, small size and high capacity. This on-line UPS offers internal batteries, optional external batteries, and internal bypass capability, resulting in continuous uptime for the connected equipment.

Designed for rack-mount or tower modes, the Liebert GXT3 is just 2U high, and is also available in 500, 700, 1000, 1500, 2000, and 3000 VA ratings, in both 120V and 230V models.

Liebert GXT3-3000RT120 - Click to enlarge


Rack Units2U
Dimensions3.4"H x 16.9"W x 23.7"D

Liebert GXT3-3000RT120 Features:

  • Flexibility:
    • Installs in either rack or tower configuration.
    • Detects and matches line input frequencies of either 60 or 50 Hz, automatically.
    • Provides compatibility with backup generator handles frequency variations and other power fluctuations that occur during generator operation.
    • Allows selection of UPS features including input voltage, output voltage, auto-restart enable/disable, and other parameters.
  • Higher Availability:
    • Protects against and conditions all forms of power anomalies.
    • Assures continuity of power to critical loads during system maintenance or in case of internal fault with internal automatic and manual bypass.
    • Operates with a wider input voltage window for fewer transfers to battery, saving battery wear and tear.
    • Allows fast and easy maintenance with user-replaceable hot-swappable batteries.
    • Notifies users with advance early warning of UPS status via automatic and manual battery test feature.
  • Lowest Total Cost Of Ownership:
    • Corrects for frequency variations without switching to battery, resulting in longer battery life.
    • 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 GXT3-3000RT120 Specifications:

Height 3.4 in. (85 mm.)
Width 16.9 in. (430 mm.)
Depth 23.7 in. (602 mm.)
Weight 61.7 lbs. (28 kg.)
Model Rating VA/W 3000/2700
Input AC Parameter  
Voltage Range 120VAC nominal; variable based on output load
Frequency 40Hz ~ 70Hz; Auto Sensing
Input Power Cord 10 ft. attached w/ NEMA L5-30P plug
Output AC Parameter  
Output Receptacles L5-30Rx1+5-20Rx6
Voltage 110/115/120/127VAC (user-configurable); 3%
Waveform Sine wave
Full Load 4 minutes
Half Load 14 minutes
Recharge Time 3 Hours to 90% capacity after full discharge with 100% load till UPS auto-shutdown
Safety UL 1778, cUL Listed
RFI/EMI FCC Part 15, Class A=CISPR22 Class B
Surge Immunity IEC 62040-2 2nd Ed
Transportation ISTA Procedure 1A
Question: Is there a hot swappable replacement battery cartridge for the GXT3-3000RT120?
Answer: Thank you for your inquiry. According to the manufacturer, the replacement battery pack is the GXT4-9A72BATKIT ( We have also confirmed with the manufacturer that this replacement battery pack is hot-swappable.