Vertiv PSI5-750MT120 Concise Descriptor

Overview

The Vertiv Liebert PSI5-750MT120 is a 750 VA / 675 W line-interactive Uninterruptible Power Supply (UPS) featuring Automatic Voltage Regulation (AVR). This compact mini-tower unit is designed to provide clean, reliable backup power and surge protection for sensitive electronic equipment in environments like small server closets, network closets, or point-of-sale systems. Its AVR capability actively corrects voltage fluctuations without switching to battery, extending battery life and ensuring consistent power delivery. The PSI5-750MT120 is ideal for protecting network switches, routers, workstations, and other critical IT infrastructure from brownouts, sags, and surges.

Compatibility

This UPS is designed to support a wide range of standard IT equipment. It features one 5-15P input plug and five 5-15R output receptacles, suitable for typical workstation and network device power cords. The unit is configurable for nominal output voltages of 100V, 110V, 115V, or 125VAC, allowing it to adapt to various equipment power requirements. For advanced network monitoring and management, it supports optional communications cards like the IS-UNITY-SNMP or IS-UNITY-DP, enabling SNMP and web-based management. It also includes USB and RJ-45 ports for direct connection and EPO (Emergency Power Off) terminals for immediate shutdown in critical situations.

Installation Notes

The Vertiv Liebert PSI5-750MT120 operates within a nominal input voltage of 120VAC, with an input range of 75-146VAC. It achieves up to 97% efficiency in normal mode, minimizing energy waste. The operating temperature range is +32 to +104 °F (0 to 40 °C). The unit is ANSI C62.41 Category A, Level 3 compliant for surge protection, and UL 1778 listed for safety. Its compact mini-tower form factor allows for easy placement on a desk, shelf, or in a rack with appropriate mounting solutions. The front panel LCD display provides clear status information for simplified installation, configuration, and operation.