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Liebert NXL (250-750kVA)

Liebert NXL uninterruptible power supply (UPS) provides reliable data center power protection and advanced technology for high power applications. This UPS adds dynamic performance to data center design, handling virtually any input condition while still providing computer-grade output to critical loads.

Liebert NXL UPS is available in single-module systems, with capacities of 250, 300 and 400 and 750kVA at 480V, 60Hz. Multi-Module 750kVA models are available in both 1+N (Distributed Static Switch) and N+1 (Centralized Static Switch) configurations. Add matching battery cabinets and a maintenance bypass cabinet for a complete power solution.

Liebert NXL battery cabinets are available with factory-integrated Alber BDSi battery monitoring. This factory installed and tested system continuously monitors and diagnoses battery parameters. The reporting function keeps data center personnel informed of battery health, and allows proactive battery replacement at the right time -- not prematurely or after a cell failure. Battery monitoring may also be managed by Liebert Services, ensuring proper, timely maintenance by local, trained Customer Engineers.


  • Matching battery and maintenance bypass cabinets for easy configuration
  • Top or bottom cable entry
  • Internal cabinet cable wiring simplifies installation
  • Ship-ahead I/O section can be installed before UPS installation

Higher Availability

  • Liebert ActiveStar®Digital Signal Processor (DSP) controls –no potentiometers
  • Redundant components –fans, power supplies, communications cards
  • Provides superior handling of present and future computer loads, up to 0.95 leading power factor without derating
  • High input fault current capability
  • Color touch screen controls improve user interface and reduce risk of human error
  • Excellent dynamic performance
  • Generator and utility friendly with low current distortion

Lowest Total Cost Of Ownership

  • Front access for installation and service
  • Compact cabinets require less floorspace
  • Improved cable access results in faster installation
  • Inter-cabinet cabling requires less hard wiring
  • Built-in battery cabinet breaker isolates string for ease of service
  • 94% operating efficiency

Ideally Suited For

  • Enterprise data centers
  • Industrial process equipment
  • Laboratories
  • Any application requiring high levels of power availability and computer-grade power quality
Product Literature
Liebert NXL UPS, 250-750kVA, 60 Hz; Product Brochure; (R05/11); (SL-30600)
Liebert Power Products Family; Brochure; 50/60Hz (R06/11) (SL-70100)
Liebert NXL Battery Interface Box; Spec/Installation Sheet; (R07/10); (SL-25515)
Liebert NXL Battery System; Installation Manual; 60Hz (R09/11); (SL-25430)
Liebert NXL Maintenance ByPass Cabinet, 250-400kVA; 60Hz; Installation Manual; (R09/09); (SL-25432)
Liebert NXL Ship-Ahead Input/Output Cabinet, 250-400kVA, 60 Hz; Installation Manual; (R07/10); (SL-25440)
Liebert NXL System Control Cabinet, SCCi Installation Manual; (R11/11); (SL-25513)
Liebert NXL System Control Cabinet; Operation Manual; 250-750kVA; 60 Hz; (R02/09); (SL-25514)
Liebert NXL 250-400kVA, 60Hz, 3-Phase, Single Module Installation Manual (R11/11); (SL-25420)
Liebert NXL UPS, 250-750kVA, 60 Hz, SMS & MMS; Operation and Maintenance Manual; (R05/11); (SL-25425)
Liebert NXL UPS 500-750kVA Single Module and Multi-Module Installation Manual (R11/11); (SL- 25434)
Liebert NXL Power-Tie Controls Installation Manual; (R01/12); (SL-25520)
Liebert NXL Power-Tie Controls Operation & Maintenance Manual (R11/11); (SL-25521)
Liebert NXL UPS, 250-400kVA, 60 Hz, SMS; Guide Specifications; (R10/10); (SL-25505)
Liebert NXL UPS; 500-750 kVA 1+N Multi-Module; Guide Spec; (R10/10); (SL-25507)
Liebert NXL UPS; 750 kVA N+1 Multi-Module Systems; Site Planning Data; (R07/11); (SL-25518)
Liebert NXL UPS; 500-750 kVA N+1; Guide Spec; (R10/10); (SL-25508)
Liebert NXL UPS; 500-750 kVA Single Module; Guide Spec; (R10/10); (SL-25509)
Liebert NXL; 250-400kVA; Site Planning Data; 60Hz (R04/11); (SL-25510); Rev1
Liebert NXL; 750 kVA SIngle Module and 1+N Multi-Module Systems; Site Planning Data; (R07/11); (SL-25517)
Liebert NXL 250-400kVA 1+N Guide Specifications; (R01/11); (SL-25506)
Liebert NXL 500-750kVA 1+N Distributed Static Switch Multi-Module Site Planning Data (R07/11); (SL-25522)
Liebert NXL 500-750kVA 1+1 Distributed Static Switch Multi-Module Site Planning Data; (R07/11); (SL-25523)
Liebert NXL UPS 1100kVA Single-Module Guide Specs; (R08/11); (SL-25524)
Liebert NXL UPS 1100kVA 1+N Multi-Module Guide Specs; (R08/11); (SL-25525)
Liebert NXL UPS 1100kVA N+1 (Centralized Static Switch) Multi-Module Guide Specs (R08/11); (SL-25526)