100 kW Modular Online UPS Comparison for 208/120 V Three-Phase Applications
Modular, online double-conversion UPS systems are the preferred architecture for large 208/120 V three-phase facilities requiring high availability, scalability, and serviceability. The Xtreme Power M90U-140 and the APC Symmetra PX 100 kW are both designed to support mission-critical infrastructure with N+1 redundancy.
While both platforms can be configured for 100 kW N+1 operation, the M90U-140 differentiates itself with greater growth headroom, a modular external battery architecture with individually breakered strings, integrated internal maintenance bypass, and more flexible lifecycle options—reducing long-term cost and operational constraints.
For data centers, healthcare, industrial, and large commercial environments planning for future expansion, the M90U-140 delivers a more adaptable modular UPS platform.
Learn more about the Xtreme Power M90U-140 Series
https://xpcc.com/products/m90u-140/
Key Differentiators at a Glance
- Expandable from 100 kW to 140 kW N+1 in the same UPS platform
- Modular external battery cabinet with individually protected strings
- Defined internal runtime configuration at full load
- Expandable battery capacity without increasing footprint
- Integrated internal maintenance bypass included as standard
- High online efficiency with optional ECO mode
- Greater flexibility for future capacity and service planning
100 kW Modular UPS Feature Comparison
208/120 V, Three-Phase, N+1 Configuration
| Feature | Xtreme Power M90U-140 100 kW Configuration | APC Symmetra PX 100 kW SY100K100F | M90U Advantage |
| Rated Capacity | 100 kW / 100 kVA | 100 kW / 100 kVA | Equal usable power |
| N+1 Configuration | 6 × 20 kW power modules, N+1 | Fully populated, N+1 | Equivalent redundancy |
| Scalability | Expandable to 140 kW N+1 | Max 100 kW | Greater growth headroom |
| Battery System, Configured | Modular M90-BC cabinet with 5 individually breakered strings | Internal VRLA battery modules, 9 installed | Safer, service-friendly architecture |
| Internal Runtime, Full Load | ~5 minutes at 100 kW | Configuration-dependent, not specified | Defined runtime |
| Battery Expansion | Expandable to 8 strings in same footprint | Fixed internal battery capacity | No footprint increase |
| Efficiency | Up to 94 percent online, 98 percent ECO | ~94.7 percent online, ECO mode | Comparable efficiency |
| Maintenance Bypass | Integrated internal bypass, standard | External bypass cabinet required | Lower cost, no added footprint |
| Total System Footprint W × D × H | 47.2 × 43.3 × 79.1 in, UPS plus battery | 47.2 × 42.1 × 79.2 in | Equivalent footprint |
| Warranty and Start-Up | 2-year parts standard; start-up and labor optional | 1-year standard warranty | More flexible service options |
Download the Printable Comparison
Download the Xtreme Power M90U-140 vs APC Symmetra PX 100 kW comparison PDF
Ideal for procurement reviews, engineering submittals, and executive approvals
https://xpcc.com/wp-content/uploads/Xtreme-M90U-140-APC-Symmetra-PX-100-kW-SY100K100F-Comparison.pdf
Where the M90U-140 Excels
- Facilities planning future capacity growth beyond 100 kW
- Data centers requiring modular expansion without full system replacement
- Environments needing service-friendly, externally accessible battery systems
- Sites seeking integrated maintenance bypass without added cabinets
- Applications prioritizing long-term lifecycle flexibility and lower total cost of ownership
When the APC Symmetra PX 100 kW May Be a Fit
- Fixed-capacity deployments capped at 100 kW
- Facilities standardized on APC Symmetra PX infrastructure
- Sites where internal VRLA battery architecture is preferred
Who Should Choose Which?
Choose the Xtreme Power M90U-140 if you need:
- Modular online UPS protection with growth beyond 100 kW
- External, modular battery architecture with safer service access
- Defined runtime configurations with expandable capacity
- Integrated maintenance bypass without additional footprint
- Greater lifecycle flexibility and future-proof system design
Choose the APC Symmetra PX 100 kW if you need:
- Modular UPS protection limited to a fixed 100 kW capacity
- Alignment with existing APC Symmetra PX installations
- Internal VRLA battery architecture
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