Vertiv PSI5-1100MT120 Concise Descriptor

Overview

The Vertiv Liebert PSI5-1100MT120 is a line-interactive AVR UPS designed to provide reliable backup power and surge protection for critical IT equipment. Its compact mini-tower form factor makes it suitable for deployment in server closets, network racks, or workstations where space is limited. This unit offers 1,100 VA / 990 W of power capacity, ensuring connected devices remain operational during short power outages or voltage fluctuations, preventing data loss and downtime. The integrated LCD display provides immediate insight into UPS status, simplifying installation, configuration, and operation.

Compatibility

This UPS is designed to support standard 120VAC equipment. It features one NEMA 5-15P input plug and five NEMA 5-15R output receptacles, suitable for connecting multiple devices such as servers, switches, workstations, and network-attached storage (NAS) units. For advanced monitoring and management, it supports optional communications cards like the IS-UNITY-SNMP or IS-UNITY-DP, enabling SNMP and web-based management protocols. It also includes USB and RJ-45 ports, along with EPO (Emergency Power Off) terminals for integration into larger safety systems.

Installation Notes

The Vertiv Liebert PSI5-1100MT120 operates within an ambient temperature range of +32 to +104 °F (0 to 40 °C). Its input voltage range is 75-146VAC, with a nominal 120VAC, and the output voltage is configurable between 100/110/115/125VAC to match specific equipment requirements. The unit achieves up to 97% efficiency in normal mode, minimizing energy waste. It is certified to ANSI C62.41 Category A, Level 3, UL 1778, RoHS2, and REACH standards, indicating compliance with safety and environmental regulations.