Rack-integrated three-phase that scales

The M90C-6S defines the rack-integrated three-phase modular UPS category — bridging the gap between single-phase rack UPS (such as the J90 and P91) and facility-level platforms (such as the M90U and Li90). Capacity is added incrementally by installing 5 kW or 8 kW power modules, redundancy is configured as N+1 within the same system, and runtime is expanded by adding battery modules — reducing overprovisioning and aligning UPS capacity with actual load growth. Hot-swappable power and battery modules and an in-frame maintenance bypass keep service fast and front-accessible.

TAA compliant for federal & regulated environments

With TAA compliance, modular front-access serviceability, and a rack-integrated footprint, the M90C-6S suits federal and government IT, healthcare systems, secure network environments, and other regulated deployments — supporting phased modernization and standardized service workflows without floor-standing facility infrastructure.

What the M90C-6S delivers

The scalable rack three-phase tier

The M90C-6S is selected when three-phase power is required inside the rack, infrastructure is scaling beyond a 3 kVA rack UPS, redundancy is needed without multiple distributed units, or a clear upgrade path to larger modular systems is required.

Step down to the M90C-2S (5–8 kW) for smaller rack deployments, or up to the facility-scale M90U and lithium Li90 when capacity outgrows the rack.

Scale incrementally instead of oversizing

Traditional three-phase UPS are fixed-capacity, floor-standing, and difficult to scale. The M90C-6S enables incremental capacity growth, rack-based deployment, integrated N+1 redundancy, and simplified long-term expansion.

Six configurations, 5–24 kW

All models share a 6-slot enclosure (3 universal slots that take a power or battery module, plus 3 battery-only slots) — a maximum of three power modules (15 kW with 5 kW modules, 24 kW with 8 kW modules). For N+1, add one power module beyond the load, so redundancy is available up to 10 kW (5 kW modules) or 16 kW (8 kW modules) — two load modules plus one redundant; the 15 kW and 24 kW builds use all three power slots and are non-redundant. Unity output power factor. Battery system is ±96 VDC (default) or ±120 VDC; each battery module (BMXRv2) holds 16 × 12V high-rate cells and an integral DC breaker. Runtime expands by adding battery modules — up to 8 per power module — with the optional BC7 cabinet adding 7 battery slots.

Runtime by load and battery module count

Runtime in minutes by number of installed battery modules, shown for the 5 kW power-module configurations (5 / 10 / 15 kW) and the 8 kW power-module configurations (8 / 16 / 24 kW). 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 BC7 cabinet, and the last adds a second — so the internal-battery maximum falls as more power modules are installed (5 modules with one power module, 4 with two, 3 with three).

Estimated minutes; values vary with battery age and site conditions. A maximum of 8 battery modules is supported per power module; an asterisk (*) indicates a configuration where an additional power module is required for battery recharge. Contact Xtreme Power at (800) 582-4524 or sales@xpcc.com for longer runtimes.

Flexible electrical integration

The M90C-6S supports corded input for deployments up to 8 kW (L21-20P at 5 kW, L21-30P at 8 kW) and hardwired input for larger systems. Output lands on terminal blocks and/or up to four configurable receptacle panels, so distribution can be tailored across retrofit and standardized environments.

Install up to 4 receptacle panels per enclosure, or use hardwired terminal blocks. Panels I and J include an integral breaker.

Where the M90C-6S is deployed

The M90C-6S is deployed across federal and government IT infrastructure, healthcare systems, edge compute and micro data centers, industrial automation, and secure network environments — wherever scalable, redundant three-phase protection is needed at the rack level. Capacity guidance: 5–8 kW for initial deployment, 10–16 kW for growing infrastructure, 15–24 kW fully populated. N+1 redundancy is available up to 10 kW (5 kW modules) or 16 kW (8 kW modules); the fully populated 15 kW / 24 kW builds are maximum-capacity and non-redundant.

Rack installation

The M90C-6S is designed for standard equipment racks with front service access and modular components for simplified maintenance. The short video below shows the modular rack-installation approach.

If the embedded video does not appear in the editor preview, use the native WordPress YouTube/Embed block with https://www.youtube.com/shorts/lsok0-_uHAg.

M90C-6S specifications

Documents and related links