M90S-12S vs RoseWater Energy HUB40
The Xtreme Power M90S-12S and the RoseWater Energy HUB40 are high-capacity power-protection systems for residential, commercial, and specialty applications. Both target premium protection, but the M90S-12S is a true modular, double-conversion UPS with scalable power and battery modules, whereas the HUB40 is a fixed-capacity system delivered as multiple large cabinets that require traditional rigging. The M90S-12S leads on scalable capacity, fully rated rectification, efficiency, a compact single-cabinet footprint, and TAA compliance.
Where the M90S-12S leads
- Modular architecture scales 6–48 kW with power and battery modules, vs the HUB40’s fixed 40 kW.
- Fully rated rectifier supports higher sustained loads without forcing battery discharge, vs the HUB40’s 19.2 kW rectifier.
- Higher efficiency — up to 98% (ECO) / about 93% online vs roughly 89% — for lower energy loss and heat.
- One compact cabinet (about 5.9 sq ft) vs the HUB40’s two cabinets (about 10.2 sq ft total); UL, cUL, and TAA compliant.
High-capacity UPS, side by side
| Specification | Xtreme Power M90S-12S | RoseWater Energy HUB40 | Advantage |
|---|---|---|---|
| System architecture | True modular online UPS | Fixed-capacity multi-cabinet system | Modular growth and redundancy |
| Scalable capacity | 6–48 kW (6/12/18/24/30/36/42/48) | 40 kW fixed | Capacity grows over time without replacement |
| Rectifier rating | Fully rated for system capacity | 19.2 kW | Higher sustained loads without forcing battery discharge |
| Universal slots | Yes — power or battery modules | No | Simpler expansion and reconfiguration |
| Efficiency | Up to 98% (ECO) / about 93% online | About 89% (calculated) | Lower energy loss and heat output |
| Dimensions (with batteries) | One cabinet: 23.6 x 36.0 x 79.1 in (about 5.9 sq ft) | Two cabinets: 28.1 x 26.25 x 52 in each (about 10.2 sq ft total) | Similar-or-greater capacity in roughly half the floor space |
| Voltage options | 120/240 V or 120/208 V (2P, N, G) | 120/240 V only | Greater flexibility across applications |
| Display & diagnostics | Chassis + module-level LCDs | Chassis-level LCD | Improved visibility and faster diagnostics |
| Rigging & installation | Casters; modular field assembly | Rigging required | Faster install, lower labor and handling cost |
| Certifications | UL, cUL, TAA compliant | UL, cUL (TAA varies by configuration) | Clear positioning for regulated markets |
| Warranty | 3 years (electronics & batteries) | 3-year onsite warranty | HUB40 includes onsite service; optional on the M90S |
M90S-12S figures are drawn from the published comparison content; the M90S-12S delivers unity power factor and is UL / cUL listed and TAA compliant, while the HUB40 is UL / cUL with TAA varying by configuration. The HUB40 efficiency figure is a calculated estimate. The HUB40 ships as two cabinets and includes onsite service in its standard warranty, which is optional on the M90S. Specifications are for planning and should be confirmed against current manufacturer documentation.
Choosing between them
Both target premium, high-capacity power protection. The M90S-12S leads on modular scalability (6–48 kW), fully rated rectification, efficiency, a single compact cabinet, and TAA compliance; the HUB40 fits fixed 40 kW deployments standardized on the HUB platform, where a multi-cabinet system with onsite-inclusive service is acceptable and no modular expansion is planned.
Choose the M90S-12S if you need
- Scalable capacity from 6 to 48 kW within one platform
- Higher sustained load capability without battery reliance
- Higher efficiency and lower thermal load
- A compact single-cabinet footprint
- Both 120/240 V and 120/208 V split-phase options
- TAA-compliant equipment and simpler installation without heavy rigging
The HUB40 may fit if you need
- A fixed 40 kW system delivered as a multi-cabinet solution
- Onsite service bundled in the standard warranty
- A residential or specialty install standardized on the HUB platform, with no planned expansion
Related comparisons
Planning a high-capacity or TAA-compliant modular UPS?
Xtreme Power supports modular UPS sizing, N+1 redundancy planning, runtime configuration, and compliance positioning across high-end residential, commercial, AV, healthcare, laboratory, and public-sector installations.