M90S-6S (18 kW) vs Toshiba 3000 SP Series 18 kW
The Xtreme Power M90S-6S, configured for 18 kW, and the Toshiba 3000 SP Series 18 kW (30S0D018KHXH) are modular online double-conversion UPS at 208/120V or 240/120V single-phase. Both deliver full 18 kW usable output; the M90S-6S differentiates on higher-energy base batteries, integrated maintenance bypass, flexible receptacle and mounting options, and a significantly smaller cabinet — simplifying installation, service, and long-term ownership.
Where the M90S-6S differentiates at 18 kW
- Equal 18 kW unity-PF usable output, but a higher-energy base battery (about 9 min vs 7 min at full load).
- Integrated maintenance bypass and configurable receptacle panels vs external bypass and no receptacle options.
- Significantly smaller cabinet — 17.4 x 33.7 x 45.5 in vs 23.6 x 41.2 x 58 in.
- Rack or tower (M90S-RMK) vs tower-only, plus internal + external runtime and standard TAA compliance.
18 kW modular UPS, side by side
| Specification | Xtreme Power M90S-6S | Toshiba 3000 SP 30S0D018KHXH | Advantage |
|---|---|---|---|
| Usable power | 18 kVA / 18 kW (unity PF) | 18 kVA / 18 kW (unity PF) | Equivalent rated usable output |
| Internal runtime (est.) | About 9 min @ 18 kW | About 7 min @ 18 kW | Higher-energy base battery |
| Scalability / redundancy | Scales to 24 kVA / 24 kW or 18 kVA N+1 | Scales to 24 kVA / 24 kW or 18 kVA N+1 | Equivalent scalability; M90S adds integrated service features |
| Maintenance bypass | Standard, integrated | External maintenance bypass required | Lower installed cost and fewer accessories |
| Receptacle options | Yes | No | Easier installation and field flexibility |
| Extended runtime | Internal + external batteries, up to 6+ hours | Internal batteries only | Greater runtime flexibility |
| Rack / tower mounting | Rack or tower (M90S-RMK) | Tower only | Broader deployment flexibility |
| System dimensions (W x D x H) | 17.4 x 33.7 x 45.5 in | 23.6 x 41.2 x 58 in | Smaller footprint and lower height |
| Certifications | UL, cUL, TAA compliant | UL, cUL (TAA varies by configuration) | Standard TAA positioning for regulated markets |
| Warranty | 3 years (electronics & batteries); onsite optional | 3-year onsite | Both 3-year; Toshiba includes onsite, M90S offers onsite as an option |
Both platforms deliver unity power factor and equivalent rated usable output, so the comparison turns on battery energy, integrated service features, distribution flexibility, cabinet footprint, and compliance rather than raw capacity. The M90S is TAA compliant; Toshiba TAA varies by configuration. Runtime figures are estimates from manufacturer documentation.
Choosing between them
Both are unity-PF modular online UPS with equivalent rated output, so the decision turns on battery energy, integrated service features, distribution flexibility, footprint, and compliance rather than raw capacity. The M90S leads on a smaller cabinet, integrated bypass, receptacle and mounting flexibility, runtime, and TAA; the Toshiba 3000 SP fits tower-only, Toshiba-standardized environments that prefer bundled onsite warranty.
Choose the M90S-6S if you need
- A compact 18 kW modular UPS with higher baseline runtime
- Integrated service bypass to reduce install cost and accessories
- Flexible receptacle and mounting options
- Extended runtime scalability beyond internal batteries
- Clear TAA compliance positioning for regulated markets
The 3000 SP 30S0D018KHXH may fit if you need
- Alignment with an existing Toshiba UPS ecosystem
- Tower-only deployment with bundled onsite warranty
- A traditional modular architecture with external bypass accessories
Related comparisons
Replacing a Symmetra LX or planning modular UPS?
Xtreme Power supports modular UPS sizing, N+1 redundancy planning, and smooth migration from legacy Symmetra LX systems across enterprise, healthcare, industrial, and public-sector infrastructure.