140 kVA Modular Online UPS Comparison for 208V Three-Phase Applications
Scalable, online double-conversion UPS systems are widely deployed in medium to large mission-critical environments requiring external battery cabinets, modular growth, and N+1 redundancy. The Xtreme Power M90U-140 and the Vertiv Liebert EXM 208V are both designed to support flexible expansion in 208V three-phase applications.
While both platforms offer modular power architecture, the M90U-140 enables higher power density within a narrow 23.6-inch cabinet. The Liebert EXM can scale to higher overall capacity, but higher ratings require a wider cabinet frame, which impacts footprint and redundancy configuration.
For facilities prioritizing compact footprint, consistent N+1 scalability, and segmented battery architecture, the M90U-140 delivers a high-density and service-optimized modular UPS platform.
Learn more about the Xtreme Power M90U-140 Series
https://xpcc.com/products/m90u-140/
Key Differentiators at a Glance
- High power density within a 23.6-inch cabinet
- N+1 redundancy up to 140 kW in a single narrow frame
- Segmented external battery cabinet with individually breakered strings
- Internal maintenance bypass included as standard
- Consistent cabinet footprint across full capacity range
- Longer standard warranty coverage
140 kVA Modular UPS Feature Comparison
208V, Three-Phase Applications
| Feature | Xtreme Power M90U-140 | Vertiv Liebert EXM 208V | Notes / Considerations |
| Rated Capacity | Up to 140 kW N+1 | Up to 100 kW in 23.6 in cabinet; up to 200 kW in 34.6 in cabinet | Capacity depends on cabinet width |
| Available Power Sizes | 15–140 kW | 20–200 kW | Higher EXM capacities require wider cabinet |
| N+1 Redundancy | Up to 140 kW | Up to 80 kW in 23.6 in frame; up to 180 kW in 34.6 in frame | Redundancy varies by frame size |
| Modular Architecture | Power modules and static switch modules | Power modules | Static switch architecture differs |
| Battery System | External modular battery cabinet with up to 8 individually breakered strings | External battery cabinets with single string per cabinet | Battery design impacts redundancy and serviceability |
| Maintenance Bypass | Internal, standard | Internal, optional | Configuration dependent |
| UPS Cabinet Width | 23.6 in | 23.6 in or 34.6 in | Higher EXM capacity requires wider cabinet |
| Warranty | 2-year parts standard | 1-year parts | Extended service plans available |
Download the Printable Comparison
Download the Xtreme Power M90U-140 vs Vertiv Liebert EXM 208V comparison PDF
Ideal for procurement reviews, engineering submittals, and executive approvals
https://xpcc.com/wp-content/uploads/Xtreme-M90U-140-Vertiv-Liebert-EXM-208V-Comparison.pdf
Where the M90U-140 Excels
- Facilities requiring full 140 kW N+1 capability in a narrow cabinet
- Data centers where cabinet width directly impacts layout efficiency
- Environments prioritizing segmented battery architecture for improved serviceability
- Deployments requiring internal maintenance bypass as standard
- Applications focused on predictable redundancy within a fixed footprint
When the Vertiv Liebert EXM 208V May Be a Fit
- Facilities requiring total capacity beyond 140 kW
- Deployments where cabinet width is not constrained
- Sites standardized on Vertiv infrastructure
Who Should Choose Which?
Choose the Xtreme Power M90U-140 if you need:
- Modular online UPS protection up to 140 kW with full N+1 redundancy in a 23.6-inch cabinet
- Segmented battery architecture with breakered strings
- Integrated maintenance bypass included as standard
- High power density without expanding cabinet width
- Longer standard warranty coverage
Choose the Vertiv Liebert EXM 208V if you need:
- Expansion beyond 140 kW capacity
- Flexible frame width options
- Alignment with existing Liebert EXM deployments
Compare M90U-140 to Other Modular UPS Alternatives
Evaluating multiple large-frame modular UPS platforms or standardizing across facilities?
View all M90U-140 UPS comparisons:
https://xpcc.com/products/m90u-140/
Plan With Confidence
Xtreme Power Conversion supports early specification, design-in, and lifecycle planning for data center, healthcare, industrial, and large commercial environments.
(800) 582-4524
sales@xpcc.com