ZIEHL industrie-elektronik GmbH + Co KG manufactures electronic devices for industrial and private use. In its development and production processes, the owner-managed company relies on state-of-the-art equipment and sophisticated quality management, focusing not only on the highest technical standards but also on values such as sustainability, energy efficiency and cost-effectiveness. This is also demonstrated by its ISO 9001:2015 and ATEX Directive 2014/34/EU certifications, and the company is also inspected for UL-approved devices.

The fact that such commitment does not only bear fruit in business terms is demonstrated by the award of the 2025 Climate Protection Prize by the city of Schwäbisch Hall for ZIEHL's EFR4002IP energy flow relay, which, according to the jury, makes an important contribution to efficient energy use and climate protection.

The EFR4002IP limits the feed-in to the public grid and optimises the self-consumption of self-generated energy. This enables ZIEHL to operate larger photovoltaic systems – even with limited grid connection capacity. This means that sustainable energy is used more efficiently and actively contributes to climate protection. With its intelligent IP communication, high reliability and future-proof design, the EFR4002IP supports the integration of renewable energies and contributes to the stability of the power grids.

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