Liebert APM Plus is a scalable, high-density, transformer-free UPS solution designed to support mission-critical applications in data centers, telecom IDC environments, and other demanding facilities. Available from 50kW to 500kW, this modular UPS delivers double conversion efficiency of up to 97%, helping organizations achieve reliable power protection while maintaining competitive operating costs. Its ultra-compact design supports both row and room applications, offering one of the smallest footprints in its range while allowing businesses to scale capacity as infrastructure needs grow. Built for performance, efficiency, and long-term flexibility, Liebert APM Plus helps future-proof critical systems against disruptive power outages.

• Remarkable double conversion efficiency – up to 97%
• Eco mode efficiency: 99%
• Flat efficiency curve
• High power density
• Fit for the row or room applications
• Modular and scalable
• Hot-swappable power modules & bypass module
• Distributed module control system
• Unitary output power factor and symmetrical power factor diagram
• Reliability boosters: Robust air channels, PCBs embedded with conformal coating
• Integrated parallel and load bus synchronization
• Intelligent paralleling function
• User-friendly 9-inch LCD touch screen display
• Supports UPS self-capacity test without load banks
• Tolerates higher ambient temperatures up to 50 °C with auto-derating