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Compact 1U rack tower UPS with matte black finish and front status display

Vertiv

Vertiv PSI5-500SRT1ULI 500VA 450W Lithium-Ion UPS 1U Rack/Tower

SKU CH-2TT3-MR3Y6 MPN PSI5-500SRT1ULI

Lithium-ion battery backup delivers 500 VA and 450 W through four NEMA 5-15R outlets in a 1U rack or tower form factor

  • Voltage version120VAC Default; 100/110/115/120/125VAC
  • AC input voltage75–150VAC
  • Input line frequency50/60 Hz Auto Sensing 60 Hz default
  • Power inputNEMA 5-15P
  • Volt-ampere rating500 VA
  • Power rating450 W

Model PSI5-500SRT1ULI

  • Lithium-ion battery recharges to full in 2 hours
  • 500VA 450W line-interactive UPS with 6 ms transfer time
  • 1U rack or tower form fits standard cabinets
  • Four NEMA 5-15R outlets with ANSI C62.41 Category A surge protection
  • USB interface enables remote monitoring and management

500VA 1U rack-tower UPS

The Vertiv PSI5-500SRT1ULI is a line-interactive uninterruptible power supply rated at 500VA and 450W. It fits a single rack unit or stands as a tower for IT equipment, server rooms and network closets. Four NEMA 5-15R outlets connect protected loads from a NEMA 5-15P input cord. Lithium-ion cells replace traditional lead-acid batteries for longer service life and faster recharge.

Hot-swappable lithium-ion battery and USB management

Internal lithium-ion modules recharge to full capacity in two hours and can be swapped without powering down connected gear. A USB port enables local monitoring and shutdown scripting, while an optional network card adds remote management. Programmable outlets let administrators shed non-critical loads during extended outages to preserve runtime for essential devices.

Verify 120V input and outlet count before ordering

The unit accepts 100 to 125VAC nominal input with a 75 to 150VAC operating window and auto-senses 50 or 60Hz frequency. Ensure your facility voltage matches this range and that four NEMA 5-15R receptacles suit your equipment plugs. Rack mounting requires a standard 1U opening; tower placement needs a stable surface within the 32 to 104°F operating temperature window.

How it compares

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

Price $540.99
Cheaper than about 65% of the 1,153 comparable items (median $948.99).

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Specifications

Product
Brand nameLiebert
Product linePSI5
Model namePSI5-500SRT1ULI
Ports & slots
Communication portsUSB
Power
Voltage version120VAC Default; 100/110/115/120/125VAC
AC input voltage75–150VAC
Input line frequency50/60 Hz Auto Sensing 60 Hz default
Power inputNEMA 5-15P
Volt-ampere rating500 VA
Power rating450 W
Power outlets4
Battery typeLithium Ion
Runtime on batteryFull load: 3.4 mins
Half load: 8.2 mins
Battery charge time2 hrs to 100%
Size & build
Rack mounting1U Rack/Tower
Product dimensions1.67 in × 17.28 in × 8.85 in
Product weight12.3 lb (5.58 kg)
Shipping weight6.62 kg
Package size480 × 437 × 42 mm
Environment & compliance
Regulatory approvalsUL 1778 5th Edition, UL1973 3rd Ed, CSA C22.2 107.3-14
Temperature rangeOperating Temperature,°F (°C): 32° to 104° (0° to 40°)
Storage Temperature °F (°C): 14° to 113° (-10° to 45°)
Humidity range20% - 90%, non-condensing
More details
Surge protectionANSI C62.41 Category A

Other versions of this model

5 more in the same range

Questions about this item

How often will the internal lithium-ion batteries need to be replaced in this UPS?

The lithium-ion batteries are hot-swappable and recharge to 100 percent in 2 hours; typical service life exceeds that of lead-acid cells, so replacement intervals are longer.

What runtime limit appears first when the PSI5-500SRT1ULI runs at full 450 W load?

At full load the unit provides 3.4 minutes of battery runtime before shutdown.

What are the operating temperature and humidity ranges for continuous daily operation?

The UPS is rated for 32 to 104 °F (0 to 40 °C) and 20 to 90 percent non-condensing humidity while running all day.

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