Liebert APM On-line UPS, 15-90kW


Liebert® APM UPS, 15-90 kVA/kW

Scalable, Highly Efficient, Row-Based Power Protection

Emerson Network Power > ASIA > Products > By Type > AC Power and UPS > Network UPS > Liebert APM On-line UPS, 15-90kW

The row-based Liebert APM is a transformer-free, on-line uninterruptible power supply (UPS) that allows quick and easy capacity increases with FlexPower™ hardware assemblies--with no additional floorspace required. Liebert APM operates with the industry's highest data center power efficiency--up to 94% at loads of 50-100%.

The 208 Volt, three-phase Liebert APM is available in two models, expandable with FlexPower hardware assemblies:

  • Liebert APM 45kW frame size is expandable from 15 to 45kW, with up to 45kW of capacity, or up to 30kW of capacity with a 15kW module for redundancy. This frame size includes internal batteries, and is compatible with the matching external battery cabinet and the optional Liebert APM bypass distribution cabinet (BDC).
  • Liebert APM 90kW frame size is expandable from 15 to 90kW, with up to 90kW of capacity, or up to 75kW of capacity with a 15kW module for redundancy. This frame size requires the matching external battery cabinet, and is compatible with the optional Liebert APM BDC bypass distribution cabinet.
  • Scalable UPS protection for growing data centers
  • FlexPower assemblies offer capacity growth without increasing footprint
  • Operates with the industry's highest efficiency rating - up to 94%
  • Fits row-based applications


  • Capacity expansion in 15kW increments using FlexPower assemblies.
  • Internal bypass allows FlexPower assemblies to be added or replaced without powering down the connected equipment.
  • Offers a large and user-friendly LCD display with operating information in twelve languages.
  • Conveniently positioned, easy-to-reach lug holes simplify unit wiring and installation.

Higher Availability

  • True on-line, double conversion technology corrects for all types of power fluctuations.
  • Redundancy features minimize single points of failure.
  • Enterprise-quality batteries in an external battery cabinet provides backup time for 90kW unit, and additional runtime for 45kW unit.
  • Optional bypass distribution cabinet (BDC) provides wraparound maintenance bypass, so the attached load can keep running during UPS service.

Lowest Total Cost Of Ownership

  • Buy only what you need for present usage, with the flexibility to add capacity as demand increases.
  • Industry™s highest reported efficiency rating (up to 94%), with a virtually flat efficiency curve from 50-100% load; efficiency is not load-dependent translates into significant energy cost savings.
  • Fewer batteries mean less maintenance and higher reliability.
  • Operates with unity power factor kW = kVA, providing more real power capacity without power losses.

Ideally Suited For

  • Small to mid-size data centers
  • Server rooms
  • Production
  • Labs and testing facilities
  • Telecommunications
  • Process control centers

Local Liebert Representative
Contact your local Liebert NA Representative at your location.

Network and Rack UPS Products
Contact our support department about your Liebert network and rack UPS system.

Sales, Service, and Support
Outside the US: +800-1155-4499

Contact Support

Qualified UPS models meeting the EPA’s requirements use an average of 35% less energy than their standard counterparts.
Learn More

Test Your Data Center Skills

Play our IT Runner Game

Play Now!