ZUG, Switzerland, Mar 9, 2026 – Siemens Smart Infrastructure is expanding its industrial control portfolio with updates to the semiconductor-based SENTRON Electronic Circuit Protection Device (ECPD) and the SIRIUS 3RW5 -Z R11 refurbished soft starter. The technologies support industrial electrical systems where reliable control and equipment lifecycle management are critical. The updates help operators strengthen electrical safety, maintain system uptime, and reduce environmental impact in industrial operations.
Siemens introduced the SENTRON ECPD in 2024 as a semiconductor-based electronic circuit protection device. The system performs electronic switching up to 1,000 times faster, reducing short-circuit energy. It integrates more than 10 configurable functions in one device, reducing distribution board space requirements by up to 80% and enabling software-based configuration.
The company plans to release a single-phase version of the SENTRON ECPD as a standalone product with integrated Residual Current Monitoring (RCM). The RCM function continuously tracks residual currents to detect electrical faults without interrupting operations. The capability allows continuous system operation and helps protect electrical equipment. The feature is intended for environments with safety and availability requirements, including data centers, exhibition facilities, lighting installations, and industrial systems. The RCM function can also replace complex recurring inspections and simplify maintenance procedures.
Siemens is planning a three-phase version of the SENTRON ECPD for high-voltage systems (400V/32A/50 Hz). The device will retain the same functions as the current versions. Its intended applications include infrastructure and industrial systems such as conveyor belts, elevators, heat pumps, air conditioning systems, 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
At the Light & Building 2026 trade fair, Siemens will introduce the SIRIUS 3RW5 -Z R11 refurbished soft starter. The device is produced through a refurbishment process using previously used soft starters. The process can reduce CO₂ emissions by up to 50% compared with manufacturing a new unit. Environmental Product Declarations (EPDs) document the refurbishment process.
According to Siemens, the refurbishment process produces a soft starter equivalent to a new unit and compatible with existing installation and parameterization settings. The product currently holds CE certification, while CCC, UL/CSA, and ATEX certifications are 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.
Siemens designed the SIRIUS 3RW5 -Z R11 with a modular structure that allows dismantling, repair, and component replacement. The device also provides usage and condition data from its first lifecycle, enabling targeted remanufacturing for a second lifecycle. Each unit includes an ID Link, a QR code used to track products across both lifecycles. Siemens is developing a data architecture using Asset Administration Shell (AAS) and Distributed Ledger Technology (DLT:IOTA). The framework aligns with a Digital Product Passport (DPP) under the EU’s Ecodesign for Sustainable Products Regulation (ESPR), providing traceable lifecycle information.
Source: Siemens
About Siemens Smart Infrastructure
Siemens Smart Infrastructure, a division of Siemens AG, is headquartered in Zug, Switzerland. The division integrates energy systems, buildings and industrial processes to improve efficiency and support modern infrastructure needs. It provides HVAC controls, fire safety systems, security technologies, energy-performance services, grid-resilience tools and electric-vehicle charging equipment. Its offerings serve sectors such as data centers, energy and manufacturing. The division develops systems that span the energy value chain, from power generation to end use, and focuses on addressing challenges related to urbanization and climate change. It also places emphasis on cybersecurity to support secure and reliable operation in increasingly digital environments. Siemens Smart Infrastructure employed about 79,000 people worldwide as of 2025.
About Siemens AG
Siemens AG, headquartered in Munich and Berlin, Germany, is a global technology company focused on industry, infrastructure, mobility and healthcare. Founded in 1847, the company develops industrial automation systems, digitalization technologies, energy-efficient equipment and medical diagnostic systems. Siemens applies industrial and generative AI to improve efficiency and operational performance across manufacturing, infrastructure and transportation. Its work combines physical systems with digital tools to support industrial processes, smart infrastructure and connected mobility. Siemens holds a majority stake in Siemens Healthineers, a medical technology company specializing in diagnostics and healthcare systems. The company employs more than 300,000 people worldwide and has operations in Germany.