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Rectangular mini-tower UPS in dark finish, front panel with status display and power button

Vertiv

Vertiv PSI5-1100MT120 UPS 1100 VA 990W 120V

SKU CH-E5V4-SVCV6 MPN PSI5-1100MT120

Provides 1100 VA line-interactive backup with automatic voltage regulation and five NEMA 5-15R outlets

  • International Version120V
  • Input Voltage Range75-146VAC
  • Input Frequency55-65 Hz (57-63 Hz Battery to Normal comeback)
  • Input ConnectionNEMA 5-15P
  • VA Rating1100 VA
  • Watts990W

Option PSI5-1100MT120

  • AVR corrects power disturbances from 83 to 159 VAC without battery use
  • 9 power factor delivers 990 W usable output from 1100 VA rating
  • Plug-and-play mini-tower needs no rack space or installation
  • Two programmable outlets prioritise critical loads during outages
  • Optional communication card enables remote monitoring of up to 50 UPS units

Plug-and-play 1100 VA mini-tower

The Vertiv PSI5-1100MT120 is a line-interactive UPS rated at 1100 VA and 990 W with a 0.9 output power factor. It connects through a NEMA 5-15P plug and provides five NEMA 5-15R outlets for desktop workstations, network gear or point-of-sale systems. No rack space or professional installation is required.

990 W with AVR headroom

Automatic Voltage Regulation corrects sags and swells from 83 to 159 VAC without drawing battery power. The unit accepts an input range of 75 to 146 VAC at 55 to 65 Hz and transfers to battery in under 6 milliseconds. At full 990 W load the battery will deplete faster than at lighter loads; the internal VRLA pack needs 6 to 8 hours to regain 90 % capacity after a discharge.

Two programmable outlets and optional remote card

Two of the five outlets can be programmed to shed non-critical loads during extended outages, preserving runtime for essential equipment. A USB port supports local monitoring, while an optional Vertiv Liebert Unity communication card enables remote oversight of up to 50 UPS units through the free Vertiv Trellis Power Insight application. Surge protection meets ANSI C62.41 Category A Level 3 at 1372 J.

Highlights

  • AVR corrects power disturbances from 83 to 159 VAC without battery use
  • 9 power factor delivers 990 W usable output from 1100 VA rating
  • Plug-and-play mini-tower needs no rack space or installation
  • Two programmable outlets prioritise critical loads during outages
  • Optional communication card enables remote monitoring of up to 50 UPS units

Specifications

BrandLiebert
SeriesPSI5
ModelPSI5-1100MT120
International Version120V
Input Voltage Range75-146VAC
Input Frequency55-65 Hz (57-63 Hz Battery to Normal comeback)
Input ConnectionNEMA 5-15P
VA Rating1100 VA
Watts990W
Output Voltage120VAC (100/110/115/125VAC user-configurable)
Outlets5
Outlet Type5 x NEMA 5-15R
Battery TypeValve Regulated Lead Acid (VRLA)
Battery Recharge Time6-8 hours to recover 90%
Interface PortUSB
ApprovalsUL 1778, c-UL-us Listed
RackmountableMini Tower
Surge ProtectionANSI C62.41, Category A, Level 3 1372 J
ProtectionElectronic (over current, short circuit w/ latching shutdown)
TemperatureOperating Temperature, ° F (° C) 32-104 (0-40)
Storage Temperature °F (°C)-5- 122 (-15- 50)
Humidity20% to 90% non-condensing
FeaturesAdvanced, pure sine wave output power on battery
0.9 power factor, which means more usable power for connected devices
Voltage regulation from 83 to 159 VAC without using the battery
Less than 6 milliseconds transfer time to battery
Plug-and-play solution requires no installation and no rack space
RJ-45 for data line surge protection
Dimensions5.7" x 14.8" x 8.7"
Weight26 lbs.
Shipping weight15.00 kg
Package size483 × 330 × 229 mm

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Questions about this item

Will the PSI5-1100MT120 protect my older PC that has a standard ATX power supply?

Yes. The UPS delivers pure sine wave output at 120 VAC, which is compatible with active PFC and older ATX power supplies. Its AVR corrects sags from 83 to 159 VAC without using the battery, so your PC stays powered during brownouts.

How can I confirm the UPS is regulating voltage and communicating with my server after I plug it in?

Connect the USB port to your server and install the Vertiv monitoring software. The software will display real-time input voltage, output voltage, load percentage and battery status, proving AVR is active and the link is working.

What cables and accessories come in the box, and what must I buy separately for remote monitoring?

The box includes the UPS, a USB cable and a NEMA 5-15P input cord. The five NEMA 5-15R outlets are built in. For remote monitoring you must purchase a Vertiv Liebert Unity communication card separately.

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