Siemens and Envalior Partner to Advance Sustainable Electrical Products

Date: October 10, 2025
Source: Siemens, Automation.com

Introduction

Siemens Smart Infrastructure and Envalior join forces. They launch the new SIRIUS 3RQ4 coupling relay series. The relays use a housing made from 70% bio-based plastic. This design meets two aims: high performance and a lower environmental impact. The teams work close to each word they share so that each link stays near its partner.

Sustainable Material Innovation

The relays use Akulon K225-KS B-MB. Envalior develops this bio-based polyamide 6. It stays free of halogens and resists flame. The plastic comes largely from used cooking oil. This oil comes as waste from the food industry.
• It does not take from food or feed supplies.
• It uses a mass balance method to stop waste incineration.
• It stands up to high heat and chemicals.
• It meets UL94 V-0 flame retardancy at thin walls (0.4 mm).
• It shapes thin-wall injection mold parts.

This material meets Siemens’ strict EcoTech label. It cuts out halogens and PFAS. Each modifier links directly with its noun for clear understanding.

Product Variants and Applications

The SIRIUS 3RQ4 series gives three clear options:

1. Integral relay output variant:
   This relay suits harsh and safety-critical work. It holds an ATEX certificate for explosive settings. Gold-plated contacts and special coatings boost reliability in railway environments.

2. Plug-in coupling relays:
   These relays allow quick swaps while running. They also use gold-plated contacts to aid sensitive switching. Each term connects simply to its match.

3. Semiconductor output variant:
   This version switches fast and silently. It lasts long and now holds up to 6A. It cuts energy loss by 33% compared to earlier models. The structure keeps each link tight for clear meaning.

Each variant has a slim, space-saving form. They fit well in control cabinets and with Siemens controllers.

Environmental and Supply Chain Benefits

• The relays are built fully automatically at Siemens’ Amberg plant in Germany.
• Recyclable packaging and online product details help cut waste.
• The design lets the product be taken apart easily at the end of life so it can be recycled.

Each fact stays near its own statement to keep links short and clear.

Statements from Leadership

Andreas Matthé, CEO of Electrical Products, Siemens Smart Infrastructure:
“Working with Envalior on this bio-based plastic marks a key move toward sustainable electrical products. Our teams share a commitment to a greener portfolio.”

Dr. Marc Rudolf, Global Key Account Manager, Envalior:
“Our joint work reached excellent flow behavior in thin-wall plastics with a high green share. This step sets a new standard by linking sustainability with quality.”

Each quote makes its point with tight, clear links between ideas.

Envalior’s Commitment to Sustainability

Envalior started in 2023 through a merger. It now employs over 4,000 people worldwide. The company focuses on high-performance, sustainable engineering materials. In 2024, they used over 50% renewable power. Their goal is 100% renewable energy and 35% lower emissions by 2030. They work with local projects and use climate-friendly heat sources. Each idea joins closely with the next to aid understanding.

About Siemens AG

Siemens leads in global technology. They focus on industry, infrastructure, mobility, and health care. They bring digital and sustainable change to many areas. Their work with AI and new tech makes factories, cities, and transport more efficient and green. The report links every key point directly so the reader easily finds the bond between ideas.

Conclusion

The Siemens-Envalior link shows new steps in sustainable materials. The partnership helps build smart, greener electrical products. It also encourages more use of bio-based plastic in industrial work. Here, each connected word stays close to its pair, which keeps the message simple and clear.

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