Vertiv™ Liebert® APS Modular UPS, 5kVA – 20kVA N+1, Double Conversion Rack/Tower Lithium- Ion/VRLA 208V UPS
The Vertiv™ Liebert® APS is a modular online double conversion UPS, offering high level of power conditioning and power protection for critical IT systems. It supports VRLA and lithium-ion batteries. Continuous power conditioning, zero transfer time, pure sinewave output and scalable runtime make it ideally suited to protect critical infrastructure in both centralized and edge network applications. The modular design offers maximum power availability with built-in redundancy for fault tolerance.
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- Government
- Healthcare
- Retail and Wholesale
- Transportation
Vertiv™ Liebert® APS Modular UPS, 5kVA – 20kVA N+1, Double Conversion Rack/Tower Lithium- Ion/VRLA 208V UPS
The Vertiv™ Liebert® APS is a modular online double conversion UPS, offering high level of power conditioning and power protection for critical IT systems. It supports VRLA and lithium-ion batteries. Continuous power conditioning, zero transfer time, pure sinewave output and scalable runtime make it ideally suited to protect critical infrastructure in both centralized and edge network applications. The modular design offers maximum power availability with built-in redundancy for fault tolerance.
- Government
- Healthcare
- Retail and Wholesale
- Transportation
Specifications
Vertiv Liebert® APS UPS supports both VRLA and lithium-ion battery strings in the same frame. VRLA remains a practical choice for shorter runtime or cost-sensitive environments, while lithium-ion offers longer useful life, faster recharge, and better performance at higher operating temperatures. Both battery types integrate seamlessly to support flexible runtime, cost, and maintenance planning across different sites.
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Liebert® APS AS3 Series
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| 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 |
| See more product information | ||||||||
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Liebert® APS AS4 Series
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| 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 |
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Liebert® APS AS5 Series
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| 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 |
| See more product information | ||||||||
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Liebert® APS AS6 Series
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| 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 |
| See more product information |
- Modular, Scalable Architecture: Modules come in 5–20 kVA capacity and scalable in 5 kVA increments with N+1 redundancy. With Pay-as-you-grow flexibility, add power or battery modules as demand increases without replacing the entire system.
- Dual Battery Chemistry Support:This industry-first UPS supports VRLA and Lithium-Ion in the same frame. Choose the battery technology that fits your budget and runtime needs today, with the ability to upgrade later without firmware changes.
- Hot-Swappable Modules: This user-replaceable power, battery, and control modules allow you to perform maintenance or upgrades without downtime, providing continuous availability.
- Built-In Redundancy: It has module-level N+1 redundancy for power and battery, which eliminates single points of failure, so critical loads remain protected even during maintenance or component failure.
- Online Double Conversion Topology: Its true online design with zero transfer time and internal automatic bypass protects your devices against all power anomalies (sags, surges, harmonics) and provides clean, conditioned power for sensitive IT loads.
- High Output Power Factor: With 0.9 power factor per module (5 kVA / 4.5 kW), it delivers more usable power in the same footprint, optimizing rack and floor space.
- Intelligent Battery Management: It has temperature-compensated charging for VRLA and integrated BMS for Lithium-Ion. This management extends battery life, reduces replacement costs, and provides real-time health monitoring for predictive maintenance.
- Flexible Runtime Options: Add battery modules or external battery cabinets for extended backup. Scale runtime without taking the load offline, which is ideal for evolving site requirements.
- Remote Monitoring & Control: It comes with factory-installed Vertiv™ Liebert® IntelliSlot™ RDU120 card with Vertiv™ LIFE™ Services. This enables secure remote management, predictive analytics, and proactive service to maximize uptime.
- Compact, Versatile Deployment: It allows tower or rack configuration with optional PODs for varied outlet types. This fits diverse IT and edge environments with simplified installation and adaptability.
- One-Line Diagram Liebert APS 200-240V
- APS-OneLine-AS1-AS2-702AC66291134F1C8A3F23B8EFC6EB57ackMBC-2010
- iebert APS 15 20kVA One-Line Diagram
- APS-OneLine-AS3-AS4-2003
- One-Line Diagram Liebert APS 15 20kVA
- One-Line Diagram Liebert APS 1PH XFMR-Based UPS with Rackmount MBC
- Single-Line Diagram Liebert APS AS3-AS4 PH XFMR-Based UPS with Wallmount MBC
- APS-OneLine-AS5-AS6-2002
- Liebert APS One-Line Diagram15 20kVA 1PH XFMR-Free UPS with Wallmount MBC
- APS-OneLine-AS5-AS6-wFloorMBC-2008.pdf
- APS-OneLine-Notes-2000
- Singe Line Diagram Liebert APS 15/20kVA, 10/16 Bay, 200V-240V 50Hz 3x1 Installation 1PH XFMR-Free UPS with Rack Mount MBC
*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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Change
Liebert® APS UPS supports either VRLA or lithium-ion battery strings in the same frame. VRLA remains a practical choice for shorter runtime or cost-sensitive environments, while lithium-ion offers longer useful life, faster recharge, and better performance at higher operating temperatures. Both battery types integrate seamlessly with the UPS, enabling flexible runtime, cost optimization, and maintenance strategies across multiple sites.
| Aspect | VRLA | Lithium-Ion |
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Service Life |
~2-5 years |
10+ years |
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Runtime @ Full Load (Std Configurations) |
~ 5 minutes |
~ 8 minutes |
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Recharge Time |
~ 5 hours |
< 4.5 hours |
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Maintenance |
Higher (frequent replacements) |
Minimal |
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Temperature Tolerance |
Standard environments |
Better performance in higher temps |
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Weight per Battery String |
~75 lbs |
~46 lbs |
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Battery Management System |
Basic (temperature-compensated charging) |
Advanced BMS with cell-level monitoring |
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Safety |
Proven VRLA technology |
LiFePO₄ chemistry for thermal stability |
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Warranty |
2 years (UPS + batteries) |
5 years (UPS + batteries) |
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Total Cost of Ownership |
Lower upfront cost |
Lower lifecycle cost |
- Longer life (10+ years)
- Faster recharge for higher availability
- Integrated Battery Management System for predictive maintenance
- Better performance in high-temperature environments
- Lower total cost of ownership
Related Articles
The Liebert® APS is a modular online double-conversion UPS, scalable from 5 to 20kVA N+1 which provides mission-critical availability and reduces costs while maintaining future flexibility.
Use the Liebert® APS UPS Selector to find the UPS required based on a variety of environmental conditions and configuration options.
