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Liebert Nfinity (4-20kVA)

Liebert Nfinity on-line uninterruptible power supply (UPS) is a scalable system, designed with N+x parallel redundancy to provide a fault-tolerant network of power protection. Its modular design was devised to provide easy, user-installed upgrades as data center power demands grow. Configurations can be cost-effectively upgraded without re-investing in a new uninterruptible power system or installation. The Liebert Nfinity UPS is available in scalable 4-16kVA and 12-20kVA models, 60Hz. Modules are scalable in 4kVA increments.


  • Allows addition of battery capacity without increasing footprint.
  • Extends backup time up to 72 hours with additional battery cabinets.
  • Upgrades for capacity or redundancy without the expense or installation downtime associated with the purchase of a new UPS.
  • Enables greater system control with remote management software.

Higher Availability

  • Offers hot-swappable power, battery, control and display modules, allowing installation or replacement without compromising power to the load.
  • Provides redundant components at critical points of UPS operation.
  • Allows maintenance to be performed without shutdown.
  • Offers emergency power-off capability.
  • Transfers seamlessly to and from the bypass source, with patent pending intelligent bypass technology.
  • Operates with a wider input voltage window for fewer transfers to battery, saving battery wear and tear.
  • Provides compatibility with backup generator — handles frequency variations and other power fluctuations that occur during generator operation.
  • Sustains 110% of the system’s rated load for an extended period of time — the highest overload capability of any system in its class.

Lowest Total Cost of Ownership

  • Ships as a complete, fully tested system, ready for final connection.
  • Reduces maintenance costs with modular batteries, controls and power components.
  • Allows scalability to cost effectively invest in added capacity as it is needed.
  • Ships with batteries connected and charged, reducing installation time and costs.

Ideally Suited For

  • Small-to-medium-sized data centers
  • Network closets
  • VoIP
Product Literature
Liebert Nfinity; Sales Brochure; 60Hz (R03/07) (SL-23900)
Liebert Power Products Family; Brochure; 50/60Hz (R06/11) (SL-70100)
Liebert Pre-Engineered Solutions; Catalog; 50/60Hz (R11/07) (SL-11345)
Liebert Nfinity Configurable Output Dist.; User Manual; 120V / 208V / 240V 60Hz (R09/01) (SL-23980)
Liebert Nfinity Extended Battery Cabinet; User Manual; 60 Hz (R03/02) (SL-23966)
Liebert Nfinity Maintenance Bypass Cabinet; User Manual; 60 Hz (REV05, R03/09) (SL-23960)
Liebert Nfinity Power System User Manual; 60 Hz (R06/03) (SL-23953)
Liebert Nfinity Wall-Mount Maintenance Bypass; User Manual; 50/60 Hz (R08/06) (SL-23967)
Liebert Nfinity 4-16kVA; User Manual 60 Hz; (R12/11); (SL-23950)
Liebert Nfininity Cabling and Protection; Specifications; 220VAC (R 7/05) - (202806P1)
Liebert Nfinity External/Extended Battery Cab; Tech Data Manual; 60Hz (R09/02) (SL-23968)
Liebert Nfinity Input Cabling & Prot. 4-16kVA; Information Sheet; 60Hz (R07/05) (SL-23951)
Liebert Nfinity Input Cabling Prot. 12-20kVA; Information Sheet; 60Hz (R07/05) (SL-23976)
Liebert Nfinity, 4-16 kVA; Guide Specifications; 60Hz (R02/02) (SL-23955)
Liebert Nfinity, 4-20kVA; Guide Specifications; 60Hz (R04/03) (SL-23956)
Liebert Nfinity; Site Planning Guide; 60Hz (R05/03) (SL-23985)