Internet Explorer, Chrome Browser, Firefox Browser, Safari Browser
Press Release15 April 2026Siemens AGZug (Switzerland)
Siemens’ new direct current portfolio enables significant energy and material savings
By
implementing DC grids, customers can achieve significant cost and material
savings. For example, in a manufacturing setting with the use of robots,
applying DC technology combined with energy recuperation and storage can reduce
peak power demand by up to 80 percent, leading to substantial cost
reductions. Furthermore, DC systems eliminate the need for reactive power
compensation and require less copper in cabling, resulting in up to 50 percent
material savings and a smaller environmental footprint.
The shift
from widely used AC (Alternating Current) systems towards DC technology is a
critical step in the global energy transition. Renewable energy sources like
photovoltaics and battery storage systems generate or store electricity as
Direct Current. By reducing conversion (DC to AC) losses and enabling the
direct integration of renewable energy sources, DC systems offer a more
efficient and sustainable alternative to traditional AC grids. Siemens is at
the forefront of this transformation, with a deep commitment to research and
development.
A key
innovation in the new portfolio is the SENTRON 3QD2 semiconductor circuit
breaker. It enables ultra-fast interruption of short circuits in the
microsecond range, up to 1,000 times faster than conventional systems. This is
mandatory for DC grids and offers a significant increase of protection and
system availability.
Complementing
the SENTRON 3QD2 is the new SIRIUS 3RF5 solid-state switching device, the first
of its kind for DC applications. It is designed for high-frequency switching of
resistive loads, offering a low wear and durable solution that enhances the
efficiency and availability of industrial plants. The SIRIUS 3RF5 also carries
the Siemens EcoTech Label, highlighting its sustainable and transparent product
design.
For this press release
Siemens AG (Berlin and Munich) is a leading technology company focused on industry, infrastructure, mobility, and healthcare. The company’s purpose is to create technology to transform the everyday, for everyone. By combining the real and the digital worlds, Siemens empowers customers to accelerate their digital and sustainability transformations, making factories more efficient, cities more livable, and transportation more sustainable. A leader in industrial AI, Siemens leverages its deep domain know-how to apply AI – including generative AI – to real-world applications, making AI accessible and impactful for customers across diverse industries. Siemens also owns a majority stake in the publicly listed company Siemens Healthineers, a leading global medical technology provider pioneering breakthroughs in healthcare. For everyone. Everywhere. Sustainably. In fiscal 2025, which ended on September 30, 2025, the Siemens Group generated revenue of €78.9 billion and net income of €10.4 billion. As of September 30, 2025, the company employed around 318,000 people worldwide on the basis of continuing operations. Further information is available on the Internet at www.siemens.com.