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Press Release05 March 2026Smart InfrastructureZug,
Switzerland
Siemens expands semiconductor-based circuit protection portfolio, debuts circular soft starter
Left: the single-phase version of the SENTRON ECPD with RCM, right: a model of the future three-phase version of the SENTRON ECPD
As the world´s first of its kind, Siemens' SENTRON ECPD was introduced to the market in 2024. It provides up to 1,000 times faster secure electronic switching to minimize short-circuit energy and protect systems. It offers 10+ configurable functionalities in a single device, reducing space in the distribution board by 80 percent and allowing for flexible, software-based parameterization. In the near future, the single-phase version of the ultra-fast SENTRON ECPD will be available as a standalone product featuring an integrated Residual Current Monitoring (RCM) function. RCM allows for continuous monitoring of residual currents, enabling the early detection of faults in electrical circuits without interrupting operations. This ensures 24/7 system uptime and protects valuable equipment. This functionality is particularly suitable for systems with high safety relevance and/or high system availability standards like data centers, exhibition fairs, lighting or various industrial applications. In addition, the RCM function can replace complex, recurring inspections, simplifying maintenance procedures.
To address high-voltage systems (400V/32A/50
Hz), Siemens also plans to introduce a three-phase version of the SENTRON ECPD.
Offering the same functionalities, its scope of use will include infrastructure
and industrial applications, like conveyor belts, elevators, heat pumps, air
conditioning systems, safe and stable power distribution at events or UPS (Uninterrupted
Power Supply) systems.
"Siemens is leveraging advanced
semiconductor technology to redefine industry standards in circuit protection,”
said Andreas Matthé, CEO Electrical Products at Siemens Smart Infrastructure.
“Our SENTRON ECPD is testament to this leadership, offering unparalleled speed,
precision, and a compact design that ensures maximum operational uptime and
protection for our customers' infrastructure."
First circular soft starter, driving sustainability in industry
In a significant move towards
sustainability, Siemens is launching the circular, low carbon SIRIUS 3RW5 -Z
R11 refurbished soft starter at the Light & Building 2026 trade fair. This
innovative product is created through a controlled refurbishment process of
used soft starters, resulting in a CO₂ emission reduction of typically
up to 50 percent compared to a new device through reduced resource consumption.
The process is transparently documented with Environmental Product Declarations
(EPDs).
During refurbishment, used devices are
thoroughly tested. Critical components are replaced, and all functions are
tested to meet new device quality standards. The result is a soft starter
technically equivalent to a new one, fully compatible in installation,
parameterization, and functionality, allowing seamless integration. Devices
have CE certification, with CCC, UL/CSA, and ATEX certifications pending.
"The new offering underscores Siemens'
commitment to innovation, sustainability, and resource efficiency in industrial
applications. With our SIRIUS 3RW5 -Z R11 refurbished soft starter, customers
get a refurbished product that performs as well as a new one, providing a
dependable and environmentally friendly option," Andreas Matthé added.
SIRIUS 3RW5 -Z R11 refurbished soft starters are circular
by design. Their modularity allows easy dismantling and repair, with
identifiable components for efficient refurbishment. As a smart
device, it provides usage and condition data from its first life cycle,
enabling targeted remanufacturing for a second. The ID Link, a unique QR code, ensures traceability
for both first and second life products. This ID Link, and a data architecture currently under development, using Asset Administration Shell
(AAS) and Distributed Ledger Technology (DLT:IOTA), paves the way for a Digital Product
Passport (DPP) in line with the EU's Ecodesign for Sustainable Products
Regulation (ESPR), ensuring transparency and audit-proof lifecycle information. At Light + Building trade fair, the Siemens booth B56 is in Hall
11.0.
SIRIUS 3RW5 -Z R11 refurbished soft starter
For this press release
Siemens Smart Infrastructure (SI) is shaping the market for intelligent, adaptive infrastructure for today and the future. It addresses the pressing challenges of urbanization and climate change by connecting energy systems, buildings, and industries. SI provides customers with a comprehensive end-to-end portfolio from a single source – with products, systems, solutions, and services from the point of power generation all the way to consumption. With an increasingly digitalized ecosystem, it helps customers thrive and communities progress while contributing toward protecting the planet. To protect this journey, we foster holistic cybersecurity to ensure secure and reliable operations. Siemens Smart Infrastructure has its global headquarters in Zug, Switzerland. As of September 30, 2025, the business had around 79,400 employees worldwide.
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.