Infineon and Siemens leverage silicon carbide technology to advance electrical protection in data centres and factories
Infineon and Siemens are partnering to advance electrical protection and ensure reliable operations in data centres, 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 direct current (DC) grids and offers a significant increase in protection and system availability, which is crucial in applications like industrial manufacturing and AI data centres, 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.
A demo showcase of the Siemens SENTRON 3QD2 semiconductor circuit breaker will be exhibited at the Infineon booth (hall 7, booth 470) at PCIM Europe 2026 in Nuremberg from 9 to 11 June.
