Siemens Unveils Circular Economy Product With IOTA Integration

• Siemens launched the SIRIUS 3RW5 -Z R11 refurbished soft starter using $IOTA-based DLT, QR traceability, and lifecycle data to support a future passport.
• SIRIUS 3RW5-Z R11 boasts performance equal to that of a new unit and full product guarantees.

Siemens has launched its first circular refurbished soft starter at Light + Building 2026, and the product includes a digital traceability framework linked to $IOTA. The SIRIUS 3RW5-Z R11 is a refurbished industrial device that matches the performance, installation, and functionality of a new unit.

The launch places a focus on circular manufacturing in industrial equipment. Used soft starters can be returned, inspected, and restored through a process that replaces only the necessary parts. The company added that each unit undergoes testing to ensure it meets the same technical standards as a new product. Customers also receive the same guarantees offered with new devices.

Siemens linked the refurbished soft starter to lower resource use and lower carbon emissions. According to the company, the SIRIUS 3RW5-Z R11 typically has a CO₂ footprint that is up to 50% smaller than that of a newly manufactured device. The reduction comes from reusing product structure and limiting material replacement during refurbishment.

$IOTA Shapes Siemens Digital Product Tracking’s Circular Model

A core part of the launch is Siemens’ digital traceability framework. The soft starter includes an ID Link, which works as a unique QR code for both first-life and second-life products. This system allows users to track the device across its service history and review usage and condition information. That feature helps guide more precise remanufacturing decisions.

The company also linked the product to a broader digital architecture now under development. Siemens said it is using Asset Administration Shell and Distributed Ledger Technology based on $IOTA to support future product documentation, as CNF previously outlined. This framework is designed to help create a Digital Product Passport that aligns with the European Union’s Ecodesign for Sustainable Products Regulation. Through that structure, Siemens will improve transparency around refurbished industrial equipment.

Alongside the soft starter launch, Siemens announced updates to its semiconductor-based circuit protection portfolio. The single-phase SENTRON Electronic Circuit Protection Device will soon include an integrated Residual Current Monitoring function. That feature allows continuous monitoring of residual currents without interrupting operations. This can help customers detect faults early while maintaining system availability.

The company also plans to release a three-phase ECPD version for 400V applications. Siemens expects that model to serve infrastructure and industrial use cases such as conveyor belts, elevators, heat pumps, air conditioning systems, event power distribution, and UPS systems.

As CNF reported, the $IOTA Trust Framework has become the leading infrastructure for companies seeking compliance with EU-mandated digital product passports.