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Product Family

Liebert® APS UPS

The Liebert® APS is a modular online double-conversion UPS, scalable from 5 to 20kVA N+1 and provides mission-critical availability and reduces costs while maintaining future flexibility. Pay as you grow design of the Liebert APS simplifies the capacity planning process and provides budget flexibility. The fault-tolerant design of the Liebert APS and hot-swappable power and battery modules ensure your critical IT applications are always protected from power disruptions, fluctuations, and outages.

Find Sales Contact Get Brochure Liebert APS® Selector
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Best Suited For:
  • Government
  • Healthcare
  • Retail and Wholesale
  • Transportation
Tools & Selectors
Use the Liebert® APS Selector
Find the UPS required based on a variety of configurations

The Liebert APS is a modular, single phase output UPS, with both single and three phase input options to provide both high availability and flexibility. The Liebert APS adapts efficiently and effectively to both immediate and evolving power requirements, offering capacity on demand with flexible power modules which allow capacity upgrades in 5 kVA/4.5kW increments up to 20 kVA N+1.

Model Specifications Overview
Liebert® APS AS3 Series
Up to 15kVA/13.5kW N+1   208VAC   208/120VAC   Up to 91%   3-Wire (L-L-G)   42 in   17 in   32 in   Up to 795 lbs  
Liebert® APS AS4 Series
Up to 20kVA/18kW N+1   208VAC   208/120VAC   Up to 91%   3-Wire (L-L-G)   49 in   17 in   34 in   Up to 920 lbs  
Liebert® APS AS5 Series
Up to 15kVA/13.5kW N+1   208/120VAC   208/120VAC   Up to 92%   4-Wire (L-L-N-G)   27 in   17 in   32 in   Up to 565 lbs  
Liebert® APS AS6 Series
Up to 20kVA/18kW N+1   208/120VAC   208/120VAC   Up to 92%   4-Wire (L-L-N-G)   38 in   17 in   34 in   Up to 700 lbs  
350VA / 200W   120 VAC   120 VAC   >95% at full load     3.82 in   12 in   6.24 in   6.6 lbs  
500VA / 300W   120 VAC   120 VAC   >95% at full load     3.82 in   12 in   6.24 in   7.7 lbs  
660VA / 400W   120 VAC   120 VAC   >95% at full load     3.82 in   12 in   6.24 in   9.4 lbs  
850VA / 500W   120 VAC   120 VAC   >95% at full load     3.82   12   6.24   9.7  


5 kVA/4.5 kW power modules deliver enhanced active power
Scalable, pay as you grow architecture optimizes initial investment 
Integral battery monitoring and temperature compensated charging for extended battery life and fewer replacements  
Fault-tolerant design allows the critical load to run on conditioned power in the unlikely event of component failure.
Hot-swappable power, control and battery modules allow replacement to be carried out without distrubing the load.
Intelligent Battery System provides continuous battery monitoring and protection 
Offers LIFE™ Services, real-time remote diagnostics for proactive maintenance, decreasing the average Mean Time to Repair (MTTR)
 Upgradeable, even while operating in double conversion mode
Configurable input: one or three phase
Designed for standalone or rack mount installation
Multiple Power Output Distribution (POD) boxes allows for specific application connections 


REMOTE MANAGEMENT & ENVIRONMENTAL MONITORING: Factory installed Intellislot Unity Card and three total intellislot ports for FREE remote management, and support for environmental sensors
True on-line double conversion
UPS Hot-swappable power and battery modules
High power factor 5 kVA / 4.5 kW power modules
Site configurable as single phase or three phase input
Scalable up to 20 kVA N+1
Fully rated @ 40°C Stand alone or rack mountable Intelligent battery modules with automatic offline capability for anomalous events
Double conversion efficiency: > 92%
Optional 10 A charger module
Terminal block or optional distribution module output socket 

*To see model-specific downloads, you will need to go to the model-specific product page by selecting the model name in the specifications chart above.

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Products Support Contacts

Showing contacts for Virginia, 20149, USA Change
Vertiv (Liebert Services)
+1 800 543 2378
610 Executive Campus Drive Westerville Ohio 43082 USA
Product areas of focus: Uninterruptible Power Supplies (UPS), Power Distribution, Thermal Management, Integrated Solutions, Racks and Containment
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