Scalable 400V protection, deployed closer to the load

The M90Ci-6S enables scalable three-phase UPS protection within rack or compact tower environments. By separating power and battery modules in a modular architecture, it supports both capacity scaling and runtime flexibility without a centralized UPS — simplifying deployment, reducing infrastructure footprint, and improving service accessibility. This aligns with the distributed power architectures used in modern data centers and industrial systems, deployed nearer the load it protects.

What the M90Ci-6S delivers

The scalable tier of the 400V M90Ci family

The M90Ci-6S is the primary scalable platform within the M90Ci family of 400/230 V modular three-phase UPS — for edge data centers, industrial environments, and distributed infrastructure where capacity exceeds compact UPS but does not require a large centralized system.

Step down to the compact M90Ci-2S (10 kW) for entry 400 V deployments, up to the high-density Ai90 (50–70 kW), or across to the 208/120 V M90C-6S for North American infrastructure.

Scale within a modular system, not a central plant

Traditional three-phase UPS are centralized, fixed in capacity, and require larger electrical-room infrastructure. The M90Ci-6S lets capacity, redundancy, and runtime scale within a modular system deployed closer to the load — improving efficiency, reducing infrastructure requirements, and simplifying long-term expansion.

Six configurations, 10–60 kW

All models share a 6-slot enclosure (5 universal slots plus 1 power-module-only slot) — a maximum of six 10 kW power modules (60 kW). For N+1, add one power module beyond the load, so redundancy is available up to 50 kW (five load modules plus one redundant); at 60 kW all six power slots carry load, so the 60 kW configuration is a maximum-capacity, non-redundant build. Unity output power factor. Battery system is ±192 VDC (default) to ±240 VDC; each battery module holds 32 × 12V 5Ah cells. Up to 8 battery modules are supported per power module, and the optional BC battery cabinet adds 7 battery slots. (The datasheet lists these as part numbers M90Ci-10K through M90Ci-60K.)

Runtime by load and battery module count

Runtime in minutes by number of installed battery modules across the 10–60 kW configurations. The stepped line tracks the six-slot enclosure sharing power and battery slots: cells to its left use battery modules inside the UPS, the next band adds one BC battery cabinet, and the last adds a second — so the internal-battery maximum falls as more power modules are installed (5 modules at 10 kW down to none at 60 kW).

Runtimes are shown in minutes and vary with battery age and site conditions. A maximum of 8 battery modules is supported per UPS power module, and an additional power module is required for battery recharge in larger configurations. Contact Xtreme Power at (800) 582-4524 or sales@xpcc.com for runtime sizing.

Electrical integration and installation

The M90Ci-6S is designed for permanent installation with hardwired input and output connections on terminal blocks. The integrated maintenance bypass enables safe load transfer during service, while modular components allow simplified replacement and reduced downtime. Tower deployment is standard, and an optional rack mounting kit allows integration into standard equipment racks or space-constrained environments.

Rack installation

With the optional rack mounting kit, the M90Ci-6S installs into standard equipment racks with front service access. The short video below shows the modular rack-installation approach.

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Replace legacy Eaton and Vertiv three-phase UPS

The M90Ci-6S is commonly deployed to replace legacy three-phase UPS and modular platforms from Eaton and Vertiv, introducing modular scalability, improved efficiency, and simplified serviceability within a compact 400 V system.

Where the M90Ci-6S is deployed

The M90Ci-6S supports data centers, edge computing, industrial automation, telecom infrastructure, and enterprise IT requiring scalable three-phase power — and is particularly well suited to distributed compute environments and facilities transitioning to modern 400 V architectures. It is selected where capacity must scale from 10 to 60 kW, redundancy is required within a single system, runtime flexibility is needed across deployments, and rack-or-tower deployment flexibility matters.

M90Ci-6S specifications

Documents and related links