We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular 2U rack-tower UPS with rotatable LCD front panel

Vertiv

Vertiv PSI5-1100RT120 UPS 1100VA 990W 120V 2U Rack/Tower

SKU CH-M610-ADV07 MPN PSI5-1100RT120

Line-interactive UPS with pure sine-wave output delivers 990 W from six NEMA 5-15R outlets and fits 2U rack or tower

  • Voltage version120 V
  • AC input voltage75-146VAC
  • Input line frequency55 to 65 Hz (57 to 63 Hz Battery to Normal comeback)
  • Power inputNEMA 5-15
  • Volt-ampere rating1100 VA
  • Power rating990 W

Model PSI5-1100RT120

  • 9 power factor delivers 990W from 1100VA capacity
  • Rotatable LCD readout stays clear in rack or tower orientation
  • Pure sine wave output protects active PFC power supplies
  • Automatic voltage regulation corrects 75-146VAC input without battery drain
  • Hot-swappable battery module enables replacement without powering down

Compact 2U Rack/Tower UPS

The Vertiv Liebert PSI5-1100RT120 is a line-interactive uninterruptible power supply rated at 1100VA and 990W with a .9 power factor. It accepts 120V input through a NEMA 5-15 plug and delivers pure sine-wave output on battery. Six NEMA 5-15R outlets support active PFC power supplies, networking gear, workstations and point-of-sale systems in edge locations.

Thermals Noise and Efficiency

The unit operates between 32°F and 104°F and stores safely from 5°F to 120°F. Automatic voltage regulation corrects brownouts and over-voltages from 75VAC to 146VAC without using battery capacity. A rotating LCD panel shows real-time status in either rack or tower orientation, and hot-swappable VRLA modules simplify maintenance while the UPS stays online.

Sustained Load Behavior

At full load the battery provides 4.5 minutes of runtime; at half load it extends to 13.5 minutes. Recharge reaches 90 percent capacity in four hours. The 1372-joule surge rating absorbs transient spikes, and the transfer window of 55Hz to 65Hz (57Hz to 63Hz for battery-to-normal return) keeps connected equipment running through unstable utility power.

How it compares

Measured against everything we stock in Uninterruptible Power Supplies (UPS), at today’s prices. Recalculated every night.

Price $595.99
Cheaper than about 63% of the 1,153 comparable items (median $948.99).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameLiebert
Product linePSI5
Model namePSI5-1100RT120
Power
Voltage version120 V
AC input voltage75-146VAC
Input line frequency55 to 65 Hz (57 to 63 Hz Battery to Normal comeback)
Power inputNEMA 5-15
Volt-ampere rating1100 VA
Power rating990 W
Voltage output120VAC (100/110/115/125VAC user-configurable)
Power outlets6
Battery typeValve Regulated Lead Acid (VRLA)
Runtime on batteryFull Load: 4.5 min
Half Load: 13.5 min
Battery charge time4 h to recover 90%
Replacement batteryPSI5-24VBATT
Surge protection rating1372 Joules
Size & build
Rack mounting2U Rack/Tower
Product dimensions3.5 in × 17.2 in × 16.1 in
Product weight29.5 lb (13.4 kg)
Shipping weight19.64 kg
Package size585 × 582 × 580 mm
Environment & compliance
Regulatory approvalsUL 1778, c-UL-us Listed
Temperature rangeOperating Temperature: 32°-104 °F (0°-40 °C)
Storage Temperature: 5°-120 °F (-15° - 50 °C)
Humidity range20% to 90% non-condensing

Other versions of this model

5 more in the same range

Questions about this item

How do I mount the 2U rack/tower UPS and orient the rotatable LCD so it is readable in either position?

Secure the unit in a standard 2U rack space using the included brackets, or place it on a stable surface as a tower; then rotate the LCD module 90° until the display faces the front in your chosen orientation.

Which replacement battery cartridge do I order when the internal VRLA cells reach end of life?

Order the PSI5-24VBATT cartridge; the UPS supports hot-swappable replacement so you can swap the battery without powering down connected equipment.

How long will the UPS sustain a 990 W full load before the battery is depleted?

The unit provides 4.5 minutes of runtime at the full 990 W load, giving enough time to initiate an orderly shutdown.

More in Uninterruptible Power Supplies (UPS)

Similar items