X90-1S Modular UPS – 50–70kW 480V Integrated UPS System
50–70 kW | 480V | Modular Three-Phase UPS
Compact, fully integrated 480V UPS system designed for critical infrastructure requiring high performance, simplified deployment, and reduced footprint at lower power levels.
Modular Three-Phase UPS · 480V Integrated
X90-1S Modular UPS
A compact, fully integrated 480V UPS system for critical infrastructure that needs high performance, simplified deployment, and a reduced footprint at lower power levels. Online double-conversion protection with power modules, batteries, and maintenance bypass in a single cabinet.
↓ Download the X90-1S datasheet (PDF)
Key specifications
One cabinet, fully integrated
The X90-1S is designed for 480V environments that need compact deployment without sacrificing a simplified, integrated architecture. Power module, batteries, and maintenance bypass are contained within a single enclosure — eliminating separate battery cabinets in many applications, reducing infrastructure complexity, and delivering reliable protection in a smaller footprint. Each X90-1S is built around a single 50 kW or 70 kW power module; for higher capacity in a similar integrated design, the family steps up through the X90-2S, X90-5S, and X90-10S.
What defines the X90-1S
Integrated battery system
Internal runtime supporting up to 11 minutes at 50 kW load — in a single cabinet, no external battery enclosure required for many deployments.
Compact all-in-one cabinet
58″ tall and only 23.6″ wide, with internal maintenance bypass and batteries — roughly 21″ shorter than the 79″ cabinets typical at this capacity.
Fits where tall cabinets will not
At 58″ the X90-1S clears low ceilings, service elevators and standard door headers, and it has been built into shipping containers for mobile medical imaging. Top cable entry and front-only service suit the same constrained installs.
High-efficiency operation
Up to 96.5% in online mode and 99% in ECO mode, reducing energy cost in continuous-duty operation.
Full front access
No rear clearance needed for maintenance or service — supports against-wall and tight-room installs.
Dual or single input
Flexible input configuration supports varied site electrical architectures.
10″ color touchscreen
Intuitive interface for real-time status and alarm monitoring.
Heavy-duty casters + floor bracket
Simplifies positioning and secures the unit in place once sited.
Top cable entry standard
Streamlines installation in tight or overhead cabling environments.
The X90 platform family
X90-1S is the compact integrated platform within the X90 family — used in distributed infrastructure, industrial environments, and smaller data-center deployments where space and simplicity are critical. The family scales on a shared architecture:
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See the full platform: X90 Modular UPS Series →
Integrated, not multi-cabinet
Traditional UPS systems in this power range often require separate battery cabinets or larger enclosures — increasing footprint and installation complexity. The X90-1S integrates runtime and maintenance bypass into a single cabinet, enabling simplified deployment while maintaining full system performance, for improved power density and reduced installation requirements.
Compare the X90-1S against Eaton 93PM, APC Galaxy VS, and Vertiv APM2: X90-1S UPS comparisons →
Integrated runtime, extendable with X90-BC
The integrated battery system provides internal runtime suitable for generator ride-through and short-duration outages. Hot-swappable components support maintenance without system downtime. For longer runtime, the optional X90-BC battery cabinet adds up to 36 battery modules.
| Battery modules → | 8 | 12 | 16 | 20 | 24 | 28 | 32 | 36 | 40 | 44 | 48 | 52 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 kW load | – | 7 | 11 | 15 | 18 | 22 | 26 | 30 | 34 | 38 | 43 | 47 |
| 70 kW load | – | – | 7 | 10 | 12 | 15 | 17 | 20 | 23 | 26 | 28 | 31 |
Runtimes in minutes; vary with battery age and site conditions. Modules 8–16 are internal to the UPS cabinet (12 or 16 installed); shaded columns (20–52) require the optional X90-BC battery cabinet.
Model selection & technical summary
| Model | Power module | Power rating | Internal battery modules |
|---|---|---|---|
| X90-1S50k | 50 kW | 50 kVA / 50 kW | 12 or 16 |
| X90-1S70k | 70 kW | 70 kVA / 70 kW | 12 or 16 |
Shared specifications
- Topology: Online double-conversion (continuous, conditioned output)
- Capacity: 50 kW or 70 kW (single power module; kVA = kW)
- Input: 480VAC (3W + G), 50/60 Hz auto-sensing; range 480VAC ±20%, 40–70 Hz; dual or single input
- Output: 480VAC (3W + G), 50/60 Hz auto-sensing
- Efficiency: Up to 96.5% online mode; 99% ECO mode
- Overload: 105–110% for 60 min; 110–125% for 10 min; 126–150% for 1 min; >150% for 200 ms
- SCCR: 65 kAIC breakers (input, output & maintenance bypass)
- Battery: ±240 VDC nominal; 12 or 16 internal modules; programmable charge current 18 A; module = 10× 12V 580W
- Extended runtime: Optional X90-BC cabinet adds up to 36 battery modules (52 total)
- UPS cabinet (W×D×H): 23.6 × 42 × 58 in · 591 lbs
- X90-BC cabinet (W×D×H): 23.6 × 42 × 79 in · 416 lbs empty, plus 70 lb per battery module (up to 36)
- Module size: Power module 17.2×29.5×5.1 in / 106 lbs · battery module 17.2×29.5×5.25 in / 70 lbs
- Display: 10″ color touchscreen
- Environment: 0–40°C (32–104°F); up to 5,200 ft; < 69 dBA at 1 m
- Communications: RS-232, EPO, relays, intelligent slot for optional Web/SNMP or Modbus card
- Approvals: UL-1778, cUL, FCC Class A, RoHS, TAA
- Warranty: 2 years (USA and Canada); 1 year outside the USA and Canada
- Included: User manual, RS-232 cable, unloading ramp, ViewPower software
- Options: External maintenance bypass, battery temperature sensor
Need protection inside the rack?
Ai90 — rack-integrated three-phase UPS Coming soon
The Ai90 delivers the same 480V three-phase protection in the same 50–70 kW class as the X90-1S — but rack-mounted instead of floor-standing, and it adds integrated output distribution. Power conversion, batteries, bypass, and a PDU live in a single rack system, sized for high-density compute and AI infrastructure where the UPS belongs in the rack. The Ai90 is not yet shipping — contact Xtreme Power for availability and to be notified at release.
Rack UPS vs centralized UPS works through the decision in full, and the Ai90 is the usual answer where an Eaton BladeUPS is being replaced. See also Ai90 comparisons.
X90-1S vs the Eaton 93PM at 50–70 kW
The 93PM is the platform the X90-1S most often replaces in this range. Both are 480V three-phase online double-conversion; the difference is architecture.
| Feature (50–70 kW) | Xtreme X90-1S | Eaton 93PM |
|---|---|---|
| Capacity range | 50–70 kW | 10–80 kW modular |
| Architecture | Integrated UPS, batteries and bypass in one cabinet | Modular UPS with external battery architecture |
| Cabinet (W×D×H) | 23.6 × 42 × 58 in | 24 × 34 × 75 in typical |
| Installed footprint | 6.9 sq ft all-in-one | 10.5+ sq ft depending on configuration |
| Battery integration | Internal, hot-swappable modules | Internal on select 40–50 kW configurations; otherwise external |
| Maintenance bypass | Internal, standard | Separate or optional depending on configuration |
| Service access | Front only, no rear clearance | Front and rear access typically required |
| Online efficiency | Up to 96.5% | Up to 97% |
The X90-1S puts the same protection in a cabinet 17 inches shorter and roughly a third less floor area, with batteries and bypass inside rather than beside it, and needs no rear clearance. The 93PM scales higher — to 80 kW against 70 — and Eaton rates its online efficiency marginally above ours. Specifications from publicly available manufacturer data; verify against current Eaton documentation for a specific quote. Full X90-1S vs 93PM comparison → · All X90-1S comparisons →
Where the X90-1S is deployed
X90-1S — frequently asked questions
How much runtime do the internal batteries give?
Up to 11 minutes at 50 kW with 16 internal modules, or 7 minutes with 12. At 70 kW the same 16 modules give 7 minutes. That is sized for generator ride-through and controlled shutdown rather than for working through an outage. If the site needs longer, the X90-BC cabinet adds up to 36 more modules, reaching 47 minutes at 50 kW and 31 at 70 kW.
What does the X90-BC add, and what does it weigh?
It is an optional battery cabinet the same 23.6 inches wide as the UPS, holding up to 36 additional modules for 52 in total. Plan the floor loading carefully: the cabinet is 416 lb empty and each battery module adds 70 lb, so a fully populated X90-BC approaches 2,900 lb. The UPS cabinet itself is 591 lb before modules.
Why does the X90-1S need no rear clearance?
Everything is serviced from the front. Power module, battery modules, breakers and the maintenance bypass are all front-accessed, so the cabinet can sit against a wall. On a 23.6-inch-wide footprint that makes it practical in rooms where a conventional UPS would need service access on two sides.
When should I choose the Ai90 instead?
When the UPS belongs in the rack rather than beside it. The Ai90 delivers the same 50–70 kW of 480V three-phase protection in a 13U rack-integrated form, and adds integrated output distribution. Choose the X90-1S when floor space is available and a single free-standing cabinet is simpler; choose the Ai90 when power needs to sit in the rack with the load. The Ai90 is not yet shipping; contact Xtreme Power for availability.
What does 65 kAIC mean for my installation?
It is the short-circuit current rating of the breakers on the input, output and maintenance bypass. 65 kAIC covers most 480V distribution without requiring an upstream current-limiting device, which simplifies the coordination study and the installation. Confirm the available fault current at the point of connection.
Is the X90-1S TAA compliant, and what warranty applies?
Yes. It carries UL-1778, cUL, FCC Class A, RoHS and TAA, which covers regulated federal, state and education procurement. Warranty is 2 years in the USA and Canada, 1 year outside the USA and Canada.
Larger X90 platforms & related guides
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