Lenovo RT11kVA 11kW 3-Phase Rack/Tower UPS 6U

The Lenovo 55949PX is a three-phase uninterruptible power supply that delivers 11 kVA and 10,000 watts of clean, continuous power through a double-conversion online design. Built to handle demanding loads, it keeps servers, storage arrays, and network switches running when the utility feed drops or fluctuates.

This 6U unit slides neatly into a standard equipment rack, yet it can also stand upright as a tower for offices or network closets that lack rack space. Four C19 outlets on the rear panel make it simple to connect high-draw devices such as blade enclosures or high-end workstations, while the 200 to 250 volt input range accommodates common data center power standards.

Because the UPS accepts a three-phase input and provides a single-phase output, it is especially useful in environments where facility power is delivered in three phases but the protected equipment expects a single phase supply. The double-conversion topology constantly conditions the incoming power, so sensitive electronics see a stable sine wave that is free of spikes, sags, or harmonic distortion.

IT managers who need dependable uptime for branch offices, small to mid-size data centers, research labs, or healthcare imaging suites will appreciate the unit’s high operating efficiency. Lower heat output means less strain on cooling systems, which can translate into reduced energy costs over the long term.

• Double-conversion online topology that isolates equipment from power anomalies
• 11 kVA / 10,000 W capacity for enterprise-class loads
• Four C19 outlets support high-current servers and peripherals
• Three-phase input with single-phase output for mixed power environments
• Rack or tower installation in a 6U footprint
• 200–250 V input voltage range
• High efficiency design that helps cut utility and cooling costs