Infineon Technologies AG and Siemens AG have entered into a collaboration aimed at strengthening Electrical Protection across data centers, production facilities and battery storage systems. Under the agreement, Infineon will provide silicon carbide (SiC) power modules for integration into Siemens’ SENTRON 3QD2 semiconductor circuit breakers, a move designed to improve the efficiency, power density and reliability of the protection technology. The companies said the partnership responds to growing requirements in power-critical environments where uninterrupted operations and fast fault response are increasingly important.
“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.”
Semiconductor circuit breakers, also referred to as solid-state circuit breakers, are electronic devices designed to safeguard electrical circuits from excessive current caused by short circuits or overloads. Unlike conventional electromechanical breakers that rely on moving parts and typically react within milliseconds, the Siemens SENTRON 3QD2 employs semiconductor components and intelligent protection algorithms. According to the companies, this enables interruption times in the microsecond range, making the system up to 1,000 times faster than traditional alternatives. Such performance is particularly relevant for direct current (DC) grids and applications including industrial manufacturing and AI data centers, where delays during electrical faults can lead to downtime, data loss and equipment damage.
“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 partnership combines Infineon’s 62 mm CoolSiC™ MOSFET module 1200 V with Siemens’ protection architecture to support more resilient and efficient power infrastructure. The companies said the collaboration will help accelerate adoption of DC grids and highly electrified environments while addressing rising demands for speed, precision, reliability and Electrical Protection. A demonstration of the SENTRON 3QD2 semiconductor circuit breaker will be displayed at PCIM Europe 2026 in Nuremberg from 9 to 11 June.
