Vertiv Liebert PSI5 5000VA 1U UPS | Rack/Tower Enterprise Power

Keep critical infrastructure running with the Vertiv Liebert PSI5 5000VA UPS, a compact 1U rack/tower system built for demanding power environments. With 5,000 VA capacity, it is aimed at workloads that outgrow smaller backup units and need more headroom for servers, storage, and network equipment. The 1U footprint matters in dense racks where every unit is already spoken for. By combining rack and tower flexibility with a high-capacity power envelope, this model gives infrastructure teams more placement options without forcing a separate power room redesign. The 208 V class is well suited to enterprise electrical environments where efficient power delivery and load support are priorities. RDU120 card support adds a management-ready path for teams that want better visibility into UPS status and power conditions. That matters when uptime is measured in business impact, not just battery minutes. For procurement, this model justifies its position by pairing compact physical design with the capacity and manageability expected in higher-value deployments.