- Siemens launches new SIRIUS 3RQ4 coupling relay with three versatile variants for a wide range of industrial requirements
- Ideal for use in combination with Siemens controllers
- Bio-based, halogen-free, flame-retardant Akulon® K225-KS B-MB plastic from Envalior offers high heat and excellent chemical resistance
DÜSSELDORF, Germany, Oct. 13, 2025 -- Siemens Smart Infrastructure has launched a new series of coupling relays, with housing made from plastic that consists of 70 percent bio-based material - derived from biomass waste. The Akulon® K225-KS B-MB plastic was developed by Envalior, a world leader in a wide range of industries by designing and developing high-quality sustainable solutions, in collaboration with Siemens to ensure all the desired properties are met. The plastic's raw material comes from used cooking oil (UCO), left over after frying in the food industry, restaurants, snack bars and households. As UCO is no longer suitable for human or animal consumption, it does not compete with food or animal feed production. While UCO is mainly used for biodiesel, Envalior uses it for the production of engineering plastics based on a mass balance concept, avoiding incineration. Envalior is a global supplier of high-performance engineering materials.
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