ABB E-mobility has unveiled the new OM X-Series, a distributed EV charging architecture designed for high-demand commercial and fleet charging operations. Built for transit depots, logistics hubs, and public charging corridors, the new system is engineered to scale from 800 kW to 10 MW and beyond while supporting more than 100 charging points from a unified power infrastructure.
The launch marks the latest step in ABB E-mobility’s evolving charging architecture strategy. Following the introduction of the A-Series in 2024 and the OM M-Series earlier this year, the X-Series targets the most demanding charging environments, where sites must operate under continuous heavy load for years rather than occasional peak usage.
According to ABB E-mobility, traditional isolated charging clusters become increasingly inefficient as power demand grows, creating energy losses and operational bottlenecks. The OM X-Series addresses this challenge with a coordinated site-level architecture that dynamically distributes power across the entire charging network.
At the core of the system is a site-level DC bus that connects power cabinets, battery storage systems, and charging dispensers into one shared energy backbone. This enables real-time allocation of charging capacity wherever demand is highest, improving utilization and operational flexibility.
Thermal management plays a major role in the X-Series design. The system uses an end-to-end liquid-cooled power path that includes liquid-cooled power modules, integrated cooling units, and liquid-cooled charging cables. ABB says the proprietary silicon carbide-based power modules can maintain over 98% conversion efficiency during continuous operation, outperforming conventional air-cooled systems in sustained-duty charging applications.
The architecture also integrates battery energy storage directly onto the DC bus rather than using traditional AC-coupled configurations. ABB claims this approach improves round-trip efficiency by more than five percentage points while simplifying peak shaving and demand management strategies. The system is additionally designed to support future vehicle-to-grid (V2G) functionality as regulations evolve.
Scalability is another major focus. Because AC/DC and DC/DC conversion are separated within the architecture, charging sites can expand power capacity without requiring major civil engineering work or replacing existing infrastructure. A site initially deployed with an X1600 configuration can later scale toward multi-megawatt operation using the same underlying platform.
The first X-Series deployment configuration combines two 800 kW cabinets linked through the DC bus and supports up to 24 charging outputs. ABB E-mobility plans to expand the platform toward larger multi-megawatt charging deployments in future configurations.
Another advantage is compatibility with ABB’s OM M-Series dispenser portfolio. Fleet operators and charging providers can begin with M-Series systems and later transition into X-Series topology as charging demand increases, enabling a smoother path toward megawatt-scale electrification.
Michael Halbherr, CEO of ABB E-mobility, said the industry is rapidly moving toward charging environments that require sustained high-power operation rather than short bursts of peak performance.
“Charging is moving toward mission profiles where systems must operate under sustained load for years, not just peak moments,” Halbherr said. “At that level of utilization, thermal stability and energy efficiency are not specifications; they are the economics.”
The OM X-Series arrives as electrification accelerates across heavy-duty transport, public transit, and large-scale commercial fleets, sectors that increasingly require charging infrastructure capable of delivering reliable megawatt-level performance around the clock.
