Munich Electrification will present its Solid-State Relay (ME SSR) at IAA Transportation in Hanover from 15 to 20 September 2026, marking the company's entry into high-voltage switching after years of focusing on battery management and sensor technology. The device replaces mechanical contactors and pyrotechnic fuses used to isolate battery and powertrain in electric commercial vehicles, relying instead on a semiconductor circuit designed to withstand the switching cycles, vibration, and continuous loads typical of commercial vehicle duty cycles.
According to the company, the ME SSR disconnects high-voltage circuits in under five microseconds, without arcing or mechanical wear, and can be reset after a fault rather than requiring replacement, as is the case with single-use pyrotechnic fuses or worn-out contactors. Munich Electrification also points to software-defined features such as configurability, self-testing for latent faults, and diagnostic data intended to support predictive maintenance ahead of failures.
The ME SSR is offered in two forms: a drop-in module for integration into existing Battery Disconnect Units, aimed at OEMs seeking improved switching without a full BDU redesign, and an integrated variant combining switching and sensor functions in one unit, targeted at new platforms or BDU consolidation efforts.
The switching technology builds on Munich Electrification's existing BMS platform, already deployed in OEM programmes including heavy-duty trucks, with Daimler Truck named as a customer. The company says this allows OEMs and suppliers to source battery management, sensing, switching, and safety software from one vendor.
Source: electrive.com — read the original article