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Liebert® EXL S1 UPS


Capacity & Installation Flexibility from 250 kW up to 9.6 MW

The Liebert® EXL S1 is a monolithic, transformer-free UPS that features optimized, industry leading footprint and power per square foot, excellent operating efficiency, robust electrical protection and intelligent paralleling that optimizes performance at partial load to achieve superior cost savings. Available in single module and distributed bypass configurations. Compatible with lithium ion battery systems.

Liebert® EXL S1 features a transformer free design with full IGBT three-level double conversion technology, providing extraordinary savings on installation and running costs, while at the same time delivering first class load protection. Liebert EXL S1 also features a full IGBT three-level rectifier allowing for electrical infrastructure cost saving, reducing the size of gensets, circuit protection, cabling and transformers.

Flexibility and Compatibility Liebert EXL S1 can be fully adapted to meet diverse system requirements in terms of power capacity and redundancy allowing for different system designs, thus ensuring maximum flexibility:

  • Output Power Factor up to 1 
  • No power derating from 0.4 lagging to 0.7 leading 
  • Optimum space/power ratio


For assistance call us toll free at: (800)-686-5312 or E-mail:

Mainline Computer Products team of highly qualified engineers and inside sales professionals provides outstanding pre-sales technical support on Power Solutions, in the areas of product configuration, specification, and pricing..

We work with you to understand your current challenges and future goals, then design custom solutions to help you meet your mission-critical goals. Our vendor-neutral approach gives you the flexibility to select the best IT Product or networking, data center, and communication solutions from a variety of vendors.

Our trained sales staff is well-versed in the latest technology advances and can provide compliant product alternatives as well as assess your current infrastructure to ensure optimal success.

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