M90U 30 kVA vs APC Galaxy VS GVSUPS30KB5FS
The Xtreme Power M90U 30 kVA and the APC Galaxy VS GVSUPS30KB5FS are online double-conversion UPS systems for 208V three-phase applications. Both deliver full 30 kVA / 30 kW with internal VRLA batteries and matched full-load runtime. They differ in battery scaling architecture — module-level vs battery strings — cabinet footprint, efficiency modes, and standard warranty. The Galaxy VS posts marginally higher online efficiency and offers ESS mode.
Where the M90U 30 kVA leads
- Full 30 kVA / 30 kW usable output.
- Modular internal battery architecture with fine-grained, module-level runtime scaling.
- Narrow 20.3-inch cabinet including batteries.
- TAA models available.
- Longer standard warranty coverage.
M90U 30 kVA and the Galaxy VS GVSUPS30KB5FS, side by side
| Specification | Xtreme Power M90U 30 kVA | APC Galaxy VS GVSUPS30KB5FS | Advantage |
|---|---|---|---|
| Rated capacity | 30 kVA / 30 kW | 30 kVA / 30 kW | Equal usable power |
| Topology | Online double-conversion | Online double-conversion | Equivalent premium protection |
| Voltage | 208/120V, 3-phase | 208/120V, 3-phase | Direct electrical match |
| Modular architecture | Power + battery modules | Power modules + battery strings | Different scaling approaches |
| Internal battery | VRLA battery modules | VRLA battery strings | Both internal VRLA |
| Internal runtime (full load) | 6 min @ 30 kW (6 modules) | 6 min @ 30 kW (2 strings) | Matched runtime |
| Battery scalability | Up to 12 battery modules | 4–5 battery strings | Finer, module-level scaling |
| Efficiency (online / ECO) | 94.1% / up to 98% ECO | Up to ~95% online; ESS available | APC ~95% online; M90U 98% ECO |
| Cabinet width (with batteries) | 20.3 in | 21.7 in | Narrower; higher density |
| Approvals | UL 1778, FCC A, RoHS, TAA (select models) | UL listed; TAA models available | Both offer TAA models |
| Warranty | 2-year (USA & Canada) | 1-year standard | Longer standard coverage |
These platforms are closely matched: equal usable power, matched full-load runtime, and comparable efficiency by mode. The M90U leads on finer module-level battery scaling, a narrower cabinet, and a longer warranty; the Galaxy VS posts marginally higher online efficiency (~95% vs 94.1%) and offers ESS mode (M90U counters with up to 98% ECO). Both offer TAA models. Confirm Galaxy VS specifications against current APC documentation.
Choosing between them
With equal capacity and matched runtime, the decision turns on battery scaling, footprint, efficiency mode, and warranty. Choose the M90U for module-level runtime flexibility, a narrower cabinet, TAA models, and a longer warranty. The Galaxy VS fits where an APC/Schneider standard governs or ESS mode is preferred.
Choose the M90U 30 kVA if you need
- Module-level battery runtime flexibility
- A narrower cabinet footprint
- TAA-compliant models
- A longer standard warranty
- Module-level battery scaling
The Galaxy VS GVSUPS30KB5FS may fit if you need
- An APC / Schneider standard governs the facility
- Schneider ESS energy-saving mode is preferred
- Battery string-based scaling is preferred
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Plan your M90U deployment
Talk to an Xtreme Power specialist about modular UPS sizing, phased capacity expansion to 60 kVA, N+1 redundancy, runtime architecture with internal battery modules, and Mitsubishi / APC / Eaton replacement for centralized facility power.