Rohde & Schwarz acquires ZES ZIMMER Electronic Systems GmbH and expands its T&M portfolio for power electronics

Rohde & Schwarz acquires ZES ZIMMER Electronic Systems GmbH and expands its T&M portfolio for power electronics Effective July 1st 2025, the technology group Rohde & Schwarz has acquired ZES ZIMMER Electronic Systems GmbH. The privately owned company based in Oberursel, Hesse, has been designing, developing and manufacturing high-precision power measurement equipment for four decades. The acquisition complements the Rohde & Schwarz test and measurement product portfolio. This is an important step that contributes to the companys long-term growth strategy and will benefit the customers of both companies.

The contract was signed by Dr. Conrad Zimmer (left), managing partner of ZES ZIMMER, and Gerald Tietscher, Vice President Signal Generators, Power Supplies & Meters at Rohde & Schwarz.

Munich / Oberursel July 2, 2025 - The rapid advancement of electrification has revolutionized the energy and mobility sectors and provides decisive impulses for industry and society. Power electronics is the indispensable driver of this transformation. With the acquisition of ZES ZIMMER Electronic Systems GmbH, Rohde & Schwarz complements its broad T&M portfolio.

In the constantly changing market environment of the past few decades, ZES ZIMMER Electronic Systems GmbH has managed to achieve continuous growth through innovative solutions and products. The ZES ZIMMER Electronic Systems GmbH portfolio will contribute to expanding the market position of Rohde & Schwarz in the field of power electronics. The family owned company in Hesse with around sixty employees will be fully integrated into the Rohde & Schwarz group. The location will be retained and will continue to be used for power measurement equipment.

For Christina Ge ner, Executive Vice President Test & Measurement Division, the acquisition is an important next step that contributes to the sustainable growth strategy of the global technology group: Both Rohde & Schwarz and ZES ZIMMER Electronic Systems GmbH are privately owned companies with a long tradition. A passion for technology and innovation has always been in the DNA of both our companies. The acquisition will further strengthen our position as a relevant and reliable technology partner for our customers in the field of power measurements, create synergies and generate further growth.

ZES ZIMMER Electronic Systems GmbH has been an established name in the power measurement market for more than 40 years and not only has a broad customer base but also a strong sales network. The privately owned companys exceptionally strong product portfolio supports a wide range of industry-leading use cases and applications, particularly in the electromobility, industrial electronics and renewable energy sectors. The future consolidation and bundling of expertise and portfolios represent a significant expansion of the Test & Measurement Divisions existing offering in the field of power electronics.

Dr. Conrad Zimmer, Managing Partner of ZES ZIMMER Electronics Systems GmbH, says: Decarbonisation and electrification of various industries will have a major impact on the demand for power electronics and power measurements in the coming decades. A merger with Rohde & Schwarz will allow ZES ZIMMER to make the best use of these growth opportunities. Georg Zimmer founded the company in 1980, and over the last four decades, the employees have built a company with a passion for technology and engineering, whose products are known and appreciated worldwide. I thank our customers for their trust in the company and its products, and all our employees for their dedication and loyalty, and I believe that as a privately owned company that thinks long term, Rohde & Schwarz will continue the success story of ZES ZIMMER.

The complete takeover of ZES ZIMMER Electronic Systems GmbH into the Rohde & Schwarz group is an important building block in the long-term growth strategy. At the same time, Rohde & Schwarz is expanding its development capacity with the acquisition and strengthening Germany as an industrial and technological powerhouse.

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