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Siemens AG and Infineon Technologies AG are partnering to advance electrical protection and ensure reliable operations in data centers, production facilities, and battery storage systems. As part of the collaboration, Infineon will supply silicon carbide (SiC) power modules to Siemens for use in its SENTRON 3QD2 semiconductor circuit breakers. This will enhance the efficiency, power density, and reliability of Siemens' protection solution.
A semiconductor circuit breaker, also known as a solid-state circuit breaker, is an electronic device that protects electrical circuits from damage caused by excessive current flow, such as short circuits or overloads. Unlike traditional electromechanical circuit breakers, which rely on mechanical parts to interrupt the flow of current and typically operate on the millisecond scale, the Siemens SENTRON 3QD2 uses semiconductor components and smart protection algorithms to perform this function. This enables ultra-fast interruption in the microsecond range, up to 1,000 times faster than conventional systems. This capability is essential for DC grids and offers a significant increase in protection and system availability, which is crucial in applications like industrial manufacturing and AI data centers, where even a slight delay can cause costly downtime, data loss, or expensive hardware damage in the event of electrical failures.
The collaboration addresses the increasing demands of power-critical applications, where speed, precision, and reliability are essential. By integrating Infineon's 62 mm CoolSiC MOSFET module 1200 V into Siemens' advanced protection concepts, the companies are contributing to more resilient, efficient, and future-ready power infrastructure. This joint approach supports the growing adoption of DC grids and highly electrified environments, helping industrial and infrastructure operators meet rising performance and reliability requirements.