ERLANGEN and LEUNA, Germany, Feb 27, 2025 – Siemens Smart Infrastructure and DOMO Chemicals announced a significant milestone in their joint effort to promote sustainable practices in the electrical industry. DOMO Chemicals has developed and validated a new, high-performance TECHNYL 4EARTH polyamide 6 (PA6) material to be used for Siemens applications that incorporate recycled content and advanced flame-retardant technology.
For the first time, Siemens will use this material for electrical safety products. The innovative TECHNYL 4EARTH material, developed by DOMO Chemicals, will enable Siemens to produce covers and housings of the Siemens SENTRON 5SV3 residual current circuit breakers (RCCB), type A/AC while offering the same performance and quality as conventional materials, which is a prerequisite for a safety product. RCCBs enhance electrical safety by disconnecting power when they detect a current imbalance, preventing electric shocks and fires. They are essential in both residential and commercial electrical installations.
Composed of 50 percent recycled content, including chemically recycled PA6 from various post-industrial and post-consumer sources such as fibers, textile filaments, and glass reinforcement, the material reduces the environmental impact of the manufacturing process without compromising performance or quality.
Siemens: Advancing circularity in electrical safety
“We want to lead the industry with smart and sustainable technology,” said Andreas Matthé, CEO of electrical products at Siemens Smart Infrastructure. “It’s our ‘new normal’ to deploy as much sustainable material as possible for each new product to support our customers in achieving both optimized operations and their environmental goals. We are delighted to promote circularity and responsible use of resources in the electrical and electronics industry together with our partner DOMO Chemicals”.
The SENTRON 5SV3 RCCBs, type A/AC, meet the criteria of the recently introduced Siemens EcoTech label. Besides using sustainable materials, the SENTRON RCCBs are designed to exceed the standard lifetime expectations set by IEC 61008-1. With an impressive 10,000 operating cycles, the devices offer superior mechanical and electrical life, ensuring steadfast performance and longevity. With SENTRON 5SV RCCBs, type A/AC, existing application functionality can be easily enhanced. The standardized accessory system allows easy hardware upgrades, including auxiliary switches, undervoltage releases, and more. This unified system of function extensions ensures that machines and switchboards remain productive and cost-effective for longer periods.
About Siemens Smart Infrastructure
Siemens Smart Infrastructure (SI), headquartered in Zug, Switzerland, is a division of Siemens AG that focuses on intelligently connecting energy systems, buildings, and industries to enhance the way we live and work. SI offers a portfolio of across-the-board building automation systems, heating, ventilation, air conditioning (HVAC) controls, fire safety and security systems, energy performance services, grid resilience solutions, and electric vehicle charging infrastructure. Serving sectors such as data centers, energy, and various industrial applications, SI addresses the challenges of urbanization and climate change by providing innovative solutions. In fiscal year 2024, SI achieved a profit margin of 17.3%. The division employs approximately 78,500 people globally.
About DOMO Chemicals
Founded in 1991, DOMO Chemicals is a Belgian company specializing in the production of engineering plastics, specialty polymers, and film chemicals. Headquartered in Leuna, Germany, the company serves various industries, including automotive, food, medical, pharmaceutical, and electronics. DOMO offers a comprehensive range of nylon resins and intermediates, complemented by polymers and chemicals, to meet diverse client needs. Over the years, the company has expanded its global presence through strategic acquisitions, such as the 2020 purchase of Solvay’s European Performance Polyamides Business, enhancing its position in the polyamide market. As of 2024, DOMO Chemicals employs approximately 2,000 professionals.
