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Vertiv Liebert PSI5-1000RM1201U 1000VA/900W Line-Interactive UPS - 1U Rack, Pure Sine, AVR, 0.9 PF, 5 Outlets (PSI5-1000RM1201U)

SKU: PSI5-1000RM1201U

Regular price $928.99 USD
Regular price Sale price $928.99 USD
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Rack-Saving Power Protection in a Single 1U

1000VA/900W, a 0.9 output power factor, and pure sine wave output, all in a space-saving 1U chassis: the Vertiv Liebert PSI5-1000RM1201U packs 2U-class protection into a single rack unit. Line-interactive AVR corrects sags and surges without draining the battery. Browse more Vertiv hardware or other rack mount UPS systems.

Common Use Cases

Its slim 1U footprint makes the PSI5 a natural fit for network closets, small data centers, schools, and offices where rack space is tight but uptime still matters. Five NEMA 5-15R outlets include two programmable outlets, so you can prioritize critical loads or schedule non-essential gear to shut down first, and hot-swappable batteries let you replace cells without powering down connected equipment.

What It Delivers

  • 1000VA / 900W, 0.9 power factor: pure sine wave output for servers, networking, and IT loads.
  • Line-interactive AVR: corrects brownouts and surges without switching to battery.
  • 1U space savings: full protection in a single rack unit with hot-swappable batteries.
  • Five 5-15R outlets, two of them programmable, plus a USB port and EPO.
  • Optional Vertiv Liebert Unity card adds remote monitoring, backed by a 2-year warranty.

Overview

  • Brand: Vertiv Liebert
  • Part Number: PSI5-1000RM1201U
  • Product Series: PSI5
  • Topology: Line-interactive with AVR
  • Form Factor: 1U rack mount

Power

  • Capacity: 1000 VA / 900 W
  • Output Power Factor: 0.9
  • Waveform: Pure sine wave
  • Input: 120 V AC, NEMA 5-15P (input range 75 to 146 V AC)
  • Output Frequency: 60 Hz
  • Transfer Time: Less than 6 ms

Battery & Runtime

  • Batteries: 4 x 6 V 9 Ah valve-regulated, non-spillable lead-acid, hot-swappable
  • Runtime (full load): Approximately 5 minutes
  • Runtime (half load): Approximately 13 minutes
  • Recharge Time: About 6 hours

Outlets & Interfaces

  • Outlets: 5 x NEMA 5-15R, including 2 programmable outlets
  • Communication: USB (HID), EPO port
  • Remote Management: Optional Vertiv Liebert Unity communication card (monitor up to 50 UPS via Trellis Power Insight)

Physical & Warranty

  • Dimensions: 1.7 in H x 17.2 in W x 17.7 in D (1U)
  • Warranty: 2-year limited, extendable up to 5 years

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