Log in DE seek solutions Products Horstmann Contact News Career Home > Horstmann Short-circuit and earth fault indicator Telecommunication solutions Voltage tester Grounding devices Station accessories The Dipl.-Ing. H. Horstmann GmbH is a medium-sized company with headquarters in Heiligenhaus near Düsseldorf. The company was founded by Heinrich Horstmann in 1946 and has been successfully family-owned ever since. Many years of experience and consistent willingness to innovate and invest make the Dipl.-Ing. H. Horstmann GmbH is now a leading manufacturer in medium voltage technology for: Short-circuit and earth fault indicator Voltage testers and testing systems Grounding devices and accessories Worldwide sales are carried out both by our own employees and by commercial agencies. Our products meet the highest quality standards and are developed and manufactured on the most modern systems in our own production facilities in Germany. In order to be able to guarantee these demands, we have a very high level of vertical integration (e.g. our own SMD assembly) as well as our own research and development department with the most modern test and measuring equipment. In addition to electronic production, we also have mechanical production for the area of safety equipment. The company has been certified according to DIN EN ISO 9001 since 1996. values Our team purchasing contact form Wish list & request Comparison list Product finder Dipl.-Ing. H. Horstmann GmbH Humboldtstrasse 2 42579 Heiligenhaus Tel. +49 2056 976-0 Fax +49 2056 976-140 info@horstmanngmbh.com Data protection imprint Contact Person Contact We use cookies to ensure that you have the best experience on our site. Allow tracking cookies Tracking cookies are used to save and analyze website visitors and their behavior on the site. This enables us to improve the user experience on our website. Visit website with this selection