Munich Electrification ME SSR Solid-State Battery Disconnect

On August 11, Munich Electrification ME SSR was announced as a solid-state battery disconnect unit for high-voltage systems in commercial vehicles, with its presentation scheduled for IAA Transportation 2026. The unit functions as a central high-voltage switch between the battery and vehicle, connecting the battery to the drivetrain during operation and safely disconnecting it when the vehicle is parked, undergoing servicing, or experiencing a fault. Munich Electrification is presenting the technology as a switching solution designed specifically for high-voltage commercial vehicle applications.

The ME SSR builds on Munich Electrification's field-proven Battery Management System platform. It switches high-voltage circuits within microseconds without arcing or mechanical wear, while also providing software-defined protection. The technology delivers higher service life, functional safety, and resistance to shock and vibration, while supporting streamlined system integration. By replacing conventional mechanical switching functions with solid-state technology, the unit is designed to address switching performance and durability requirements in demanding high-voltage vehicle environments.

The ME SSR is offered in two variants to address different vehicle architectures and integration requirements. The standalone drop-in version integrates into existing Battery Disconnect Units, allowing OEMs to upgrade switching performance without redesigning the complete BDU. The integrated module combines switching and sensor technology within a single unit, making it suitable for new vehicle platforms and BDU consolidation projects. This two-variant approach provides flexibility for OEMs developing new commercial vehicle architectures as well as those upgrading existing high-voltage systems.

Frequently Asked Questions

What is the Munich Electrification ME SSR?
Munich Electrification ME SSR is a solid-state battery disconnect unit designed for high-voltage commercial vehicle systems. It operates as a central high-voltage switch between the battery and vehicle, connecting the battery to the drivetrain during operation and disconnecting it when the vehicle is parked, serviced, or affected by a fault. The technology switches high-voltage circuits within microseconds without arcing or mechanical wear. It also provides software-defined protection while supporting functional safety, shock and vibration resistance, longer service life, and streamlined integration into vehicle electrical architectures.

What are the two ME SSR variants?
The ME SSR is available as a standalone drop-in solution and an integrated module. The standalone version is designed to fit into existing Battery Disconnect Units, enabling OEMs to improve switching performance without redesigning the complete BDU. The integrated version combines switching and sensor technology in one unit, supporting new vehicle platforms and BDU consolidation projects. Both variants address high-voltage switching requirements while providing different integration approaches for commercial vehicle manufacturers depending on whether they are upgrading an existing architecture or developing a new platform.