ABB E-mobility Launches OM X-Series for Highest-Duty Cycle, Megawatt-Scale Charging Use Cases

The X-Series is the third step in ABB E-mobility's systematic architecture progression. The A-Series, launched in 2024, established the reference for reliable high-power charging. The OM M-Series, launched in April 2026, extended that architecture into site-level split systems, optimizing charging economics across multiple use cases. The X-Series advances this architecture to the highest-performance applications: sustained duty cycles, megawatt-scale site topologies, and multiple mission profiles within one shared power system.

At continuous duty, the operating condition that megawatt charging sites sustain for years, thermal management is not a feature. It determines whether efficiency and reliability specifications hold across the life of the asset. The X-Series addresses this with an end-to-end liquid-cooled power path: a power cabinet with integrated cooling unit, proprietary liquid-cooled power modules, and liquid-cooled cables that carry thermal management through every conversion stage. Those modules achieve more than 98% conversion efficiency as a continuous operating condition, not a rated peak, outperforming air-cooled alternatives across the duty cycles these sites require. Built-in redundancy maintains operational continuity through planned and unplanned interruptions, preserving uptime without scheduled maintenance windows.

Three integrated elements deliver the full site architecture. A site-level DC bus forms the backbone, a shared power spine across which cabinets and storage assets coordinate, with capacity moving in real time to where demand exists. Liquid-cooled silicon carbide modules anchor the power conversion layer. Battery energy storage connects directly on the DC bus, improving round-trip efficiency by more than 5 percentage points compared to AC-coupled systems,¹ enabling peak shaving and demand management without additional conversion stages. The architecture is also designed to support vehicle-to-grid energy flows, in line with regulatory frameworks.

Because the architecture decouples AC/DC and DC/DC conversion and is specified for future power levels, a site commissioned with an X1600 can scale toward multi-megawatt operation on the same infrastructure, without civil rework and without stranded assets. The initial X-Series configuration consists of two 800 kW cabinets connected through a DC bus for direct battery storage integration, supporting up to 24 charge outputs; ABB E-mobility will extend the system to multi-megawatt scale on this architecture.

The OM M-Series and X-Series share a common dispenser portfolio, allowing sites to begin with M-Series and extend to X-Series topology as mission profiles intensify, a second dimension of scaling beyond modular power expansion alone.

Charging is moving toward mission profiles where systems must operate under sustained load for years, not just peak moments,” said Michael Halbherr, chief executive officer of ABB E-mobility. “At that level of utilization, thermal stability and energy efficiency are not specifications; they are the economics. The X-Series is built for that standard from the architecture up.

The OM M-Series and OM X-Series will be on public display for the first time at ACT Expo in Las Vegas, May 4–6, 2026. ABB E-mobility can be found at booth #3601.

The X-Series data sheet is available here.

About ABB E-mobility 

As a global leader in electric vehicle (EV) charging solutions, ABB E-mobility is enabling a more sustainable and efficient mobility future. It is the preferred partner of the world’s leading EV original equipment manufacturers (OEMs), EV charging network operators, and fleet companies. ABB E-mobility offers the widest portfolio of EV charging solutions, including high-power chargers for destination charging, solutions for the electrification of fleets, and charging solutions for electric buses and trucks. ABB E-mobility employs around 1,400 people worldwide and has sold over 68,000 high-power chargers, electrifying more than 10,000 sites globally.

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¹ Round-trip efficiency comparison based on DC-coupled silicon carbide systems at continuous duty vs. traditional AC-coupled. Technical assumptions are available on request.