Power protection systems are getting a radical upgrade as Siemens and Infineon Technologies team up to bring semiconductor speed and silicon carbide efficiency into the heart of industrial electricity networks.

 

The two companies have announced a collaboration to advance semiconductor-based circuit breaker technology for data centers, factories, and battery storage systems — environments where rising electrification and AI-driven demand are pushing traditional power protection to its limits.

 

At the center of the partnership is Infineon’s supply of silicon carbide (SiC) power modules for Siemens’ SENTRON 3QD2 semiconductor circuit breaker — a next-generation protection system designed to react dramatically faster than conventional hardware and improve efficiency, power density, and reliability in critical electrical networks.

 

The companies are targeting a fast-emerging problem: modern industrial systems are becoming more electrified, more complex, and far more sensitive to electrical faults. In environments such as AI data centers and automated factories, even microsecond-level delays in protection can translate into costly downtime or permanent hardware damage.

 

“AI data centers and factories are becoming increasingly electrified and complex. This increases vulnerability to electrical failures and drives the demand for more sustainable, efficient and reliable power distribution systems,” said Andreas Weisl, Executive Vice President & Chief Sales Officer of Industrial and Infrastructure at Infineon. 

 

“By combining our advanced silicon carbide technology with Siemens' expertise in power distribution, we are addressing this demand to ensure fast, safe and reliable operations in power-critical environments.”

 

Unlike traditional electromechanical circuit breakers that rely on physical switching mechanisms and operate on the millisecond scale, semiconductor circuit breakers use electronic switching and intelligent protection algorithms. The result is ultra-fast interruption of fault currents in the microsecond range — up to 1,000 times faster than conventional systems.

 

That speed is especially critical for direct current (DC) grids, where rapid fault isolation is essential to prevent cascading damage. Siemens’ SENTRON 3QD2 is positioned as part of a broader shift toward DC-based industrial infrastructure that promises higher efficiency and improved system availability.

 

“Our new direct current portfolio offers innovative solutions that not only improve energy efficiency but also enable the development of resilient, future-proof infrastructure,” said Markus Grabmeier, CEO Electrical Products at Siemens Smart Infrastructure. 

 

“Direct current applications can decrease energy consumption and substantially cut material usage. By integrating batteries, peak power can also be significantly reduced. With this approach, we are making a decisive contribution to the decarbonization of our industries, while reinforcing our commitment to developing technologies that deliver tangible value to our customers and society.”

 

The technical backbone of the collaboration is Infineon’s 62 mm CoolSiC MOSFET module rated at 1200 V, which will be integrated into Siemens’ advanced protection architecture. The companies say the combination is designed to deliver higher resilience, improved efficiency, and better performance in high-demand environments.

 

The push comes as operators of data centers and industrial facilities face surging electricity demand driven by artificial intelligence workloads, automation, and electrified manufacturing systems. As loads increase, so does the need for protection systems that can react instantly and precisely when faults occur.