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Black mini tower UPS with six NEMA 5-15R outlets on rear

Vertiv

Vertiv PSI5-1500MT120 1440VA 1350W Mini Tower UPS

SKU CH-EDFD-8QENA MPN PSI5-1500MT120

Line-interactive UPS delivers 1350 W pure sine-wave output, automatic voltage regulation from 83 to 159 VAC, and six NEMA 5-15R outlets in a mini-tower form factor

  • Voltage version120 V
  • AC input voltage75-146VAC
  • Input line frequency55-65 Hz (57-63 Hz Battery to Normal comeback)
  • Power inputNEMA 5-15P
  • Volt-ampere rating1440 VA
  • Power rating1350 W

Model PSI5-1500MT120

  • Line-interactive design delivers pure sine wave output for sensitive IT loads
  • Automatic Voltage Regulation corrects 83-159 VAC input without draining the battery
  • Six NEMA 5-15R outlets provide 1440 VA / 1350 W of battery-backed power
  • Surge protection rated to ANSI C62.41 Category A Level 3 with 1372 J energy absorption
  • Optional Unity card enables remote monitoring of up to 50 UPS units via Trellis Power Insight

1440VA Mini Tower UPS

The Vertiv PSI5-1500MT120 is a line-interactive uninterruptible power supply rated at 1440VA and 1350W for 120VAC environments. It protects workstations, network closets and small server rooms from outages, brownouts and noise interference.

Thermals, noise and power draw

The unit operates between 0 and 40 degrees Celsius with 20 to 90 percent non-condensing humidity. Automatic Voltage Regulation corrects input from 83 to 159VAC without engaging the battery, reducing heat and acoustic output during normal voltage fluctuations.

Six NEMA 5-15R outlets and Unity card slot

Six rear outlets distribute battery-backed and surge-protected power to connected loads. An optional Vertiv Liebert Unity communication card enables remote monitoring of up to 50 UPS units through the free Vertiv Trellis Power Insight application.

How it compares

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

Price $517.99
Cheaper than about 66% of the 1,153 comparable items (median $948.99).

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Specifications

Product
Brand nameLiebert
Product linePSI5
Model namePSI5-1500MT120
Power
Voltage version120 V
AC input voltage75-146VAC
Input line frequency55-65 Hz (57-63 Hz Battery to Normal comeback)
Power inputNEMA 5-15P
Volt-ampere rating1440 VA
Power rating1350 W
Voltage output120VAC (100/110/115/125VAC user-configurable)
Power outlets6
Battery typeValve Regulated Lead Acid (VRLA)
Battery charge time6-8 h to recover 90%
Built-in protectionElectronic (over current, short circuit w/ latching shutdown)
Size & build
Rack mountingMini Tower
Product dimensions5.7 in × 19.1 in × 8.7 in
Product weight40.1 lb (18.2 kg)
Shipping weight22.18 kg
Package size584 × 356 × 254 mm
Environment & compliance
Regulatory approvalsUL 1778, c-UL-us Listed
Temperature rangeOperating Temperature, ° F (° C) 32-104 (0-40)
Storage Temperature °F (°C)-5- 122 (-15- 50)
Humidity range20% to 90% non-condensing
More details
Surge protectionANSI C62.41, Category A, Level 3 1372 J

Other versions of this model

5 more in the same range

Questions about this item

How do I install the PSI5-1500MT120 and which connection step is often missed?

Plug the NEMA 5-15P input into a grounded 120 VAC wall outlet, then connect equipment to the six NEMA 5-15R outlets. The step often missed is configuring the output voltage to 100, 110, 115, 120 or 125 VAC to match your devices before powering on.

What maintenance will the PSI5-1500MT120 need and when should the battery be replaced?

The valve-regulated lead-acid battery typically lasts three to five years; replace it when runtime drops noticeably. Recharge takes six to eight hours to reach ninety percent after a full discharge. Keep the unit in 0 to 40 °C ambient temperature and twenty to ninety percent non-condensing humidity for maximum life.

What is the first limit the PSI5-1500MT120 hits under sustained heavy load?

The 1350 W output rating is the first hard limit; exceeding it triggers electronic over-current protection with latching shutdown. If the load stays within 1350 W, battery runtime becomes the next constraint, and prolonged operation at 40 °C may reduce component longevity.

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