M90S-6S Modular UPS – 6–24kW Scalable Single-Phase UPS with N+1 Redundancy

The M90S-6S is a modular online double-conversion UPS designed for facilities where power requirements are growing beyond traditional single-phase UPS limits.

Built on a 6-slot architecture using 6 kW power modules, the system scales from 6 kW to 24 kW while supporting redundancy, runtime expansion, and phased deployment within a single platform.

This enables infrastructure to grow over time while maintaining centralized power protection and operational continuity.

Key Specifications

• 6–24 kW capacity
• 208/120V or 240/120V single phase
• Online double-conversion topology
• 6 kW modular power blocks
• 6 universal slots (power or battery)
• N+1 redundancy capable
• Modular battery expansion
• Configurable output distribution
• Input connection: L14-30P (6 kW configuration)
• 3-year warranty (USA & Canada)
• TAA compliant

Datasheet:
https://xpcc.com/wp-content/uploads/M90S-6S-flyer.pdf

Scalable Modular Power Architecture

M90S-6S enables true modular scalability within single-phase infrastructure.

Capacity can be increased incrementally by adding power modules, while redundancy can be implemented using N+1 configuration within the same system.

This allows infrastructure planners to align UPS capacity with actual load requirements while maintaining flexibility for future expansion.

Where M90S-6S Fits in Power Architecture

M90S-6S operates as a centralized UPS platform within single-phase infrastructure, bridging the gap between rack-level UPS systems and three-phase facility UPS.

It is typically deployed:

• in electrical rooms supporting distributed infrastructure
• where multiple UPS systems would otherwise be required
• in facilities approaching single-phase capacity limits

Within the Xtreme Power architecture:

• P91 → rack-level UPS
• T91 → long-runtime UPS
• M90S-2S → entry modular UPS
• M90S-4S → scalable modular UPS
• M90S-6S → core modular UPS platform (this system)
• M90S-12S → high-capacity modular UPS
• Li90 → three-phase facility UPS

For architecture context:
https://xpcc.com/rack-power-architecture/

Modular UPS vs Traditional UPS

UPS systems are typically deployed using either fixed-capacity (traditional) architecture or modular architecture.

Traditional UPS systems must be oversized or replaced as infrastructure grows. M90S-6S enables capacity, redundancy, and runtime to be scaled incrementally within a single system.

Key Differences

Flexible Electrical Integration

M90S-6S supports simplified deployment using a factory-installed L14-30P input connection for 6 kW configurations.

Configurable output options include:

• IEC C19
• NEMA 5-15R / 5-20R
• NEMA L6-20R / L6-30R
• NEMA L14-30R

This enables deployment in electrical rooms, telecom environments, and commercial infrastructure without requiring immediate electrical modification.

Rack Deployment and Installation

M90S modular UPS systems support rack-based deployment with integrated mounting hardware and modular access, enabling installation in standard equipment racks while maintaining serviceability.

Watch on YouTube:
https://www.youtube.com/shorts/lsok0-_uHAg

When to Use a Modular Single-Phase UPS

M90S-6S is typically selected when:

• infrastructure is expected to grow over time
• redundancy is required within a single system
• multiple UPS systems are becoming difficult to manage
• runtime requirements exceed rack UPS capability
• three-phase upgrades are not yet required

M90S-6S vs Traditional UPS Systems

Traditional UPS systems are fixed-capacity and require full replacement when capacity limits are reached.

M90S-6S enables phased expansion and integrated redundancy within a single system, improving lifecycle flexibility and simplifying infrastructure planning.

Replace APC / Eaton UPS Systems

M90S-6S is commonly deployed as a replacement for:

• distributed UPS deployments
• fixed-capacity single-phase UPS systems
• legacy modular UPS platforms

Explore comparisons:
https://xpcc.com/m90s-modular-ups-competitive-comparisons/

Typical Applications

M90S-6S is deployed across:

• telecommunications infrastructure
• industrial automation systems
• broadcast environments
• commercial facilities
• distributed technology environments

Capacity Guidance

Capacity is defined by module configuration:

• 6 kW → initial deployment
• 12–18 kW → scaling infrastructure
• 24 kW → fully populated system
• N+1 → redundancy configuration

UPS sizing tool:
https://xpcc.com/selector

M90S Modular Platform Options

• M90S-2S → 6 kW
• M90S-4S → 6–12 kW
• M90S-6S → 6–24 kW (this platform)
• M90S-12S → up to 48 kW

Technical Summary

Topology: Online double conversion
Capacity: 6–24 kW
Voltage: 208/120V or 240/120V
Architecture: Modular
Slots: 6
Redundancy: N+1 capable
Battery: Modular expansion

Plan With Confidence

Xtreme Power Conversion supports engineers, consultants, and infrastructure planners in designing modular UPS systems for scalable capacity, redundancy, and long-term infrastructure growth.

Phone: (800) 582-4524
Email: sales@xpcc.com