15–80 kW | 208/120V Three-Phase | Modular Online Double-Conversion UPS
High-density modular three-phase UPS engineered for facility infrastructure requiring scalable capacity, N+1 redundancy, and maximum power within a compact electrical room footprint.
15–80 kW · 208/120V Three-Phase · Modular Online UPS · High Density · Single Cabinet · Unity PF
The M90U-80 is a scalable modular online double-conversion UPS that integrates power electronics, internal batteries, a modular static switch, and front-serviceable maintenance bypass into a single 208/120V three-phase cabinet. It scales from 15 to 80 kW at unity power factor using hot-swappable 15 kW or 20 kW power modules — delivering 60–100 kW-class capacity within a compact electrical-room footprint, with N+1 redundancy and internal modular VRLA batteries. Engineered for data centers, healthcare, telecom, and industrial facilities where capacity, density, and serviceability must be balanced in limited space.
M90U-80 high-density modular three-phase UPS — a single floor-standing cabinet integrating up to four hot-swappable power modules, up to sixteen internal battery modules, a modular static switch, and front maintenance bypass, with a 10-in graphic touchscreen.
The M90U-80 protects critical data and equipment while supplying clean, network-grade power, and can be configured with a fully redundant power module and battery modules — if one module fails, the remaining modules smoothly take over the load. The independent power modules are hot-swappable without risk to the critical load. By consolidating power, batteries, and bypass into one cabinet, the M90U-80 delivers capacity that traditionally needed multiple cabinets, while keeping modular scalability and redundancy.
Traditional UPS in the 60–100 kW range often require separate cabinets for power, batteries, and bypass. The M90U-80 integrates all three into a single modular cabinet, minimizing the space those systems normally consume while preserving scalability and redundancy. Capacity is added by installing power modules — up to four per enclosure — so infrastructure grows without adding cabinets or increasing the footprint.
M90U-80 deployed in a facility electrical room — a single cabinet delivering 60–100 kW-class capacity in the footprint a multi-cabinet system would otherwise occupy.
| Integrated function | What it replaces |
|---|---|
| Up to four hot-swappable power modules (15 or 20 kW) | Separate power cabinet / parallel frames |
| Up to sixteen internal VRLA battery modules | External battery cabinets (for standard runtimes) |
| Modular static switch with redundant power supplies | Standalone static-switch assembly |
| Front-mounted maintenance bypass | External / rear maintenance-bypass cabinet |
Building on the M90U platform, the M90U-80 adds enhancements that improve usability, serviceability, and system integration — reducing service time and supporting faster deployment.
A 10-in graphic touchscreen provides system status, alarms, and control with improved visibility over standard modular panels.
A front-mounted MBP switch transfers the critical load from UPS to utility for service — no rear access required.
Battery modules connect through a backplane for faster installation and maintenance, with up to sixteen hot-swappable modules.
A modular STS with redundant power supplies improves resilience and simplifies maintenance.
Top-feed input and output cable entry simplifies installation in centralized electrical rooms.
Unity PF (kW = kVA) provides full real capacity for high-density loads with no usable-watt derating.
Scale capacity by adding hot-swappable 15 kW or 20 kW power modules — up to four per enclosure — as load grows.
Up to 80 kW within a single compact cabinet, consolidating multi-cabinet UPS footprints.
Configure a redundant power module (N+1 to 60 kW on 20 kW modules, 45 kW on 15 kW modules) for the highest availability.
Up to sixteen internal VRLA battery modules deliver scalable runtime without external battery cabinets.
Dual- or single-input configurations and top-feed cable entry provide installation flexibility.
An integrated, front-mounted maintenance bypass and modular static switch keep service fast and accessible.
The enclosure holds up to four power modules. The 20 kW module line scales to 80 kW (4 × 20); a 15 kW module line is also available, scaling to 60 kW (4 × 15). Unity power factor means the kVA and kW ratings are equal.
| Model | Capacity | Power modules | Charge current | Redundancy |
|---|---|---|---|---|
| M90U80-20k | 20 kVA / 20 kW | 1 × 20 kW | 8 A | Single module |
| M90U80-40k | 40 kVA / 40 kW | 2 × 20 kW | 16 A | N+1 to 20 kW |
| M90U80-60k | 60 kVA / 60 kW | 3 × 20 kW | 24 A | N+1 to 40 kW |
| M90U80-80k | 80 kVA / 80 kW | 4 × 20 kW | 32 A | Fully populated — non-redundant |
N+1 protected capacity is one module below the fully populated rating: up to 60 kW with 20 kW modules (3 × 20 active, one redundant) or 45 kW with 15 kW modules. The 80 kW (4 × 20) and 60 kW (4 × 15) ratings are fully populated and non-redundant. Charge current scales with the populated module count (8 / 16 / 24 / 32 A). A 15 kW module line yields 15 / 30 / 45 / 60 kW configurations.
Approximate runtime in minutes with internal VRLA battery modules (4 to 16) by system load. A dash indicates that load is beyond the supported range for that battery configuration. For extended runtimes beyond the internal table, an external battery option is available.
| Battery modules | System load (kVA) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | |
| 4 modules | 37 | 16 | 9 | 6 | — | — | — | — | — | — | — | — | — | — | — | — |
| 8 modules | 85 | 37 | 23 | 16 | 12 | 9 | 8 | 6 | 5 | — | — | — | — | — | — | — |
| 12 modules | 127 | 60 | 37 | 26 | 20 | 16 | 13 | 11 | 9 | 8 | 7 | 6 | — | — | — | — |
| 16 modules | 169 | 85 | 52 | 37 | 28 | 23 | 19 | 16 | 13 | 12 | 10 | 9 | 8 | 7.5 | 7 | 6 |
Runtimes are approximate, based on fully formed batteries, and vary with battery age, temperature, and site conditions. Battery life is reduced above 30°C and capacity derates above 30°C and 5,200 ft. Contact Xtreme Power at (800) 582-4524 or sales@xpcc.com for runtime sizing.
M90U-80 is the mid-scale, high-density platform within the M90U family — deployed in electrical rooms where space is limited and capacity requirements exceed entry-level modular systems. The entry M90U covers 15–60 kW where space is not the primary constraint; the M90U-140 extends to higher capacity; and the Li90 offers an integrated lithium facility UPS.
See the full M90U platform family.
| Compared with | How the M90U-80 differs |
|---|---|
| Traditional multi-cabinet UPS (60–100 kW) | Consolidates power, batteries, and bypass into a single modular cabinet — reducing footprint and simplifying installation while keeping scalability and redundancy. |
| M90U (standard modular) | Builds on the M90U with higher capacity and power density in a more compact cabinet, plus a larger 10-in touchscreen, front-facing maintenance bypass, and backplane-connected battery modules for faster service. Choose M90U-80 when space is limited, capacity approaches or exceeds 60 kW, or faster service access is a priority. |
| M90U-140 | The higher-capacity platform for requirements beyond 80 kW. Choose the M90U-140 when capacity needs exceed the M90U-80 ceiling. |
M90U-80 is commonly deployed to replace legacy multi-cabinet UPS from APC and Eaton — consolidating multiple UPS into a single platform, fitting electrical rooms with limited space, delivering higher capacity within an existing footprint, and adding modular scalability and redundancy.
M90U-80 is deployed across environments requiring high-capacity protection within limited space — data center electrical rooms, edge computing, healthcare infrastructure, telecommunications, and industrial facilities.
The M90U-80 carries UL-1778, cUL, FCC Class A, and RoHS, and is TAA compliant on select models — confirm TAA eligibility for the specific model and configuration when a regulated procurement requires it. It is backed by a 2-year electronics and 2-year battery warranty (USA and Canada).
| Capacity | 15 / 20 / 30 / 40 / 45 / 60 / 80 kVA = kW (unity PF), from 15 kW or 20 kW modules |
| Topology | Modular online double-conversion, three-phase |
| Input | 208/120V three-phase, 50/60 Hz auto-sensing; range 121–253 VAC (L-L), 40–70 Hz; dual or single input |
| Output | 208/120V; 50/60 Hz ±0.5 Hz; THD <2% at full load |
| Efficiency | Up to 94% online mode, up to 98% ECO mode |
| Overload | 105–110% (60 min); 110–125% (10 min); 126–150% (1 min); >150% (200 ms) |
| Power modules | Up to four hot-swappable 15 kW or 20 kW modules (4 × 20 = 80 kW, or 4 × 15 = 60 kW) |
| Redundancy | N+1 capable — protected ceiling 60 kW (20 kW modules) / 45 kW (15 kW modules); 80 kW and 60 kW fully populated, non-redundant |
| Battery | Internal modular VRLA; ±120 VDC; 4 / 8 / 12 / 16 hot-swappable modules; charge current 8 / 16 / 24 / 32 A (programmable) |
| Static switch | Modular STS with redundant power supplies |
| Bypass | Integrated front-mounted maintenance bypass (external maintenance bypass optional) |
| Enclosure | 23.6"W × 43.3"D × 79.1"H / 657 lb; power module 19.5 × 29.5 × 5.5 in / 74 lb; battery module 4.3 × 28.5 × 6.5 in / 70 lb |
| Cable entry | Top feed |
| Display | 10-in graphic touchscreen LCD — status and alarms |
| Communications | RS-232, EPO, intelligent slot (Web/SNMP, Modbus), optional relay card; ViewPower software included |
| Environment | 0–40°C (32–104°F); altitude 5,200 ft; audible noise <69 dBA at 1 m |
| Options | External maintenance bypass, 480V input transformer, output distribution, battery temperature sensor |
| Approvals | UL-1778, cUL, FCC A, RoHS, TAA (select models) |
| Warranty | 2-year electronics, 2-year battery (USA and Canada) |
Talk to an Xtreme Power specialist about high-density modular UPS sizing, phased capacity expansion, N+1 redundancy, internal battery runtime, dual-input integration, and APC / Eaton multi-cabinet replacement within a constrained electrical-room footprint.
| MODEL NUMBER | M90U80-20k | M90U80-40k | M90U80-60k | M90U80-80k | |
| CAPACITY | Power rating | 20kVA/20kW | 40kVA/40kW | 60kVA/60kW | 80kVA/80kW |
| Enclosure capacity: power modules | Up to 80KVA (4 x 20KVA) or up to 60kVA (4 x 15KVA) | ||||
| Enclosure capacity: battery modules | 4, 8, 12, or 16 internal battery modules | ||||
| INPUT | Voltage / frequency nominal | 208/120V, 50/60Hz auto-sensing | |||
| Voltage / frequency range | 121–253VAC* (L-L), 40–70Hz | ||||
| OUTPUT | Voltage | 208/120V | |||
| Frequency | 50/60Hz ± 0.5Hz | ||||
| THD (full load) | < 2% | ||||
| Efficiency | Up to 94% online mode or 98% ECO mode | ||||
| Overload capacity | 105%-110% for 60min; 110%-125% for 10min; 126%-150% for 1min; >150% for 200ms | ||||
| BATTERY SYSTEM | Nominal voltage | ± 120V | |||
| Charge Current (programable) | 8A | 16A | 24A | 32A | |
| DIMENSIONS & | Enclosure | 23.6″W x 43.3″D x 79.1″H / 657 lbs | |||
| WEIGHT | Power module | 19.5”W x 29.5”D x 5.5”H / 74 lbs | |||
| Battery module | 4.3”W x 28.5”D x 6.5”H / 70 lbs | ||||
| ENVIRONMENT | Temperature | 0–40°C (32–104°F)** | |||
| Altitude | 5,200 ft above sea level** | ||||
| Audible noise (typical) | < 69dBA at 1m | ||||
| APPROVALS | UL-1778, cUL, FCC A, RoHS, TAA (select models) | ||||
| WARRANTY | 2 years (USA and Canada) | ||||
| COMMUNICATIONS INTERFACE | RS-232, EPO, intelligent slot for optional cards (Web/SNMP, Modbus), optional relay card | ||||
| INCLUDED IN BOX | User manual, RS-232 cable, unloading ramp, ViewPower Software | ||||
| AVAILABLE OPTIONS | External maintenance bypass, 480V input transformer, output distribution, battery temperature sensor | ||||