Vertiv Liebert PSI5 UPS - 800VA/720W Line Interactive, Rack/Tower, with NIC

The Vertiv Liebert PSI5 UPS delivers reliable, compact, and scalable power protection for your essential electronics.Designed for small racks and workspaces, this 800VA/720W line-interactive UPS guards your servers, networking gear, and critical peripherals against power glitches, outages, and brownouts. With a smart feature set that combines robust battery backup with intelligent management capabilities, the Liebert PSI5 is built to keep your equipment online when it matters most, while helping you extend component life and reduce the risk of data loss. Whether deployed on a rack or as a standalone tower, this unit is engineered to fit tight spaces without sacrificing performance.

Engineered for efficiency and reliability, the Liebert PSI5 delivers clean, regulated power to reduce the risk of unexpected shutdowns. Its line-interactive topology provides automatic voltage regulation (AVR) to compensate for voltage fluctuations without switching to battery power. This means shorter battery runtime when power is steady and longer battery life when fluctuations occur. In practical terms, your critical gear—servers, network switches, NAS devices, and workstations—stays protected not only during blackouts but also during minor grid swings that can gradually degrade equipment over time.

Designed with contemporary workflows in mind, the PSI5 offers seamless integration with networked environments thanks to an included NIC (Network Interface Card). This enables remote monitoring and management from compatible software platforms, giving IT staff and administrators visibility into UPS status, load, battery health, and event history. The result is proactive power protection: you can anticipate issues, schedule graceful shutdowns, and maintain business continuity even when on-site personnel are unavailable. The UPS also supports standard USB and serial connections for easy local management, making it versatile for diverse setups—from home labs to small data closets.

Flexibility is a core strength of the Liebert PSI5. The unit can be mounted as a rack-mount or used as a tower, adapting to your existing environment without demanding a complete reorganization of your equipment. Its compact footprint fits neatly into small cabinets or under desks, while its rugged construction is designed to withstand daily use in busy office settings or data-center-adjacent spaces. With user-replaceable batteries and straightforward maintenance procedures, you can maximize uptime without sacrificing ease of service, ensuring your investment remains protected for years to come.

For peace of mind, the PSI5 combines protection features that go beyond backup power. It provides surge suppression, noise filtering, and voltage regulation that create a safer operating environment for sensitive devices. By stabilizing incoming power and shielding connected equipment from surges and transients, the Liebert PSI5 slows wear on electronics, helps prevent data corruption, and minimizes the risk of hardware failure due to power anomalies. When teamed with Vertiv’s management software and NIC, you gain actionable insights and automated responses that empower administrators to optimize energy use, extend component life, and maintain service levels even during grid instability.

In short, the Vertiv Liebert PSI5 UPS is a robust, scalable, and easy-to-manage solution for individuals and small teams seeking reliable power protection. It combines essential backup capabilities with smart management, flexible form factors, and the operational resilience needed to keep critical devices online. If you’re safeguarding a small rack with a few servers, a network closet with switches and QoS-enabled routers, or a home lab with a dedicated workstation, the PSI5 delivers dependable protection that’s simple to deploy and rewarding to maintain.

• The Liebert PSI5 provides dependable 800VA / 720W of backup power for essential devices, helping prevent data loss and unsaved work during outages.
• Its line-interactive topology with AVR keeps equipment safe from voltage dips and surges without excessive battery usage, improving efficiency and battery life.
• Rack-mountable or tower-ready, the PSI5 adapts to your space and layout, enabling a flexible setup that fits small data closets, office racks, or desk-side configurations.
• Integrated NIC support enables remote monitoring and management for proactive maintenance, status alerts, and graceful shutdowns across networks.
• Comprehensive protection and ease of service—USB/Serial interfaces, user-replaceable batteries, and straightforward installation—make it a practical, long-term power-protection solution for critical electronics.

Technical Details of Vertiv Liebert PSI5 UPS

Technical specifications highlight the core capabilities of the Vertiv Liebert PSI5 UPS, focusing on capacity, topology, and management features. While exact model-by-model specs can vary by region and SKU, the Liebert PSI5 is defined by its 800VA (720W) backup capacity, line-interactive topology, and form-factor versatility that supports both rack-mounted and tower deployments. A built-in Network Interface Card (NIC) enables remote monitoring and management, making it easier to monitor UPS health, load, battery status, and environmental factors from a central console. In addition to network management, standard USB and serial connections support local administration and integration with common IT workflows. The unit is designed to shield connected equipment from typical power disturbances, offering automatic voltage regulation, surge suppression, and battery-backed uptime for critical devices.

• Capacity: 800VA / 720W backup power for connected equipment
• Topology: Line-Interactive—regulates voltage and optimizes battery use
• Form factor: Rack/Tower convertible to fit compact and mixed environments
• Networking: Includes Network Interface Card (NIC) for remote monitoring and management
• Management interfaces: USB and Serial connectivity for local control; NIC for network integration

how to install Vertiv Liebert PSI5 UPS

• Choose a stable, well-ventilated location with adequate clearance for cooling and service access. If mounting in a rack, ensure proper rack rails and secure the unit according to your rack configuration. Do not obstruct ventilation grills.
• Position the UPS so that its weight is evenly supported and reach the outlets you intend to protect. Verify that the total connected load does not exceed 720W to maintain reliable runtime and avoid nuisance tripping.
• Connect the UPS to a dedicated AC outlet or circuit using the appropriate power cord. Ensure the outlet provides stable voltage within the unit’s operating range and follows your local electrical codes.
• Plug critical equipment into the UPS’s surge-protected outlets. Keep nonessential devices on the UPS only if there is sufficient runtime to protect mission-critical equipment during an outage.
• Install and configure management tools. Connect the NIC for network monitoring, and attach USB/Serial cables as needed for local management. Install the recommended software to monitor UPS health, battery status, and runtime estimates, and set up automatic graceful shutdowns for connected devices during extended outages.
• Power on the UPS and perform a self-test. Confirm that load, battery status, and output voltage are within expected ranges. If needed, configure voltage regulation settings and notification alerts to match your environment.
• Schedule regular battery maintenance and replacement based on usage patterns and manufacturer guidelines. Keep spare batteries on hand if your environment experiences frequent outages or high runtime requirements.

Frequently asked questions

Q: What devices does the Vertiv Liebert PSI5 protect?

A: The PSI5 is designed to protect a range of critical electronics, including small servers, network switches and routers, NAS devices, desktop workstations, and other equipment sensitive to power disturbances. With 800VA/720W capacity, you can back up essential gear during outages and fluctuations, helping to prevent data loss and hardware damage.

Q: Does the PSI5 come with networking capabilities?

A: Yes. The unit includes a Network Interface Card (NIC) to enable remote monitoring and management. This capability allows administrators to monitor UPS health, battery status, load, and events from a centralized location. USB and Serial connections are also available for local management and integration with common IT workflows.

Q: What is the typical runtime of the PSI5?

A: Runtime varies based on the load and the battery condition. With a lighter load, you can expect longer backup intervals, while heavier loads shorten runtime. The NIC and monitoring software provide real-time estimates so you can plan orderly shutdowns and maintain service levels during outages.

Q: Can the PSI5 be mounted in a rack?

A: Yes. The Liebert PSI5 is designed as a rack/tower convertible unit, allowing flexible placement in cabinets, data closets, or under desks. When rack-mounted, ensure adequate ventilation and secure mounting to prevent movement or vibration that could affect performance.

Q: How do I maintain or replace the batteries?

A: The PSU uses user-replaceable batteries in most configurations. Regular maintenance checks and battery health monitoring through the NIC-enabled software help determine when a replacement is necessary. Always follow manufacturer guidelines for battery replacement, and dispose of old batteries per local environmental regulations.