PASSION FOR PERFECTION
Horstmann - Your partner for medium voltage technology
We are making the energy grid of the future safer, more efficient and more sustainable.
Innovative products for more transparency in medium-voltage grids
WHO WE ARE
Horstmann is an established medium-sized company with its headquarters in Heiligenhaus, not far from Düsseldorf. Founded in 1946 by Heinrich Horstmann, the company is still successfully run by the family today. Thanks to our many years of experience and consistent willingness to innovate and invest, Horstmann has established itself as a leading manufacturer of medium-voltage technology.
Our product portfolio includes:
- Short-circuit indicators: Precise devices for detecting short circuits in electrical systems.
- Earth fault indicator: Efficient solutions for identifying earth faults.
- Voltage testers and test systems: High-quality instruments for checking electrical voltages.
- Earthing devices and accessories: Robust and reliable products for safe earthing systems.
We attach great importance to quality and reliability, which is underlined by our DIN EN ISO 9001 and ISO 27001 certifications. Our commitment to technical excellence and continuous improvement is reflected in every single product and meets the high demands of our customers in the electrical engineering sector. Trust in the innovative strength and stability of Horstmann – your partner for future-oriented products and solutions in medium-voltage technology.
Discover our latest product innovations for forward-looking technology
OUR PRODUCT HIGHLIGHTS
Sigma D++
Combined short-circuit direction and earth fault direction indicator for medium-voltage networks
Wega 2
Integrated voltage test system in accordance with IEC 62271-213 with display and LED indicator as well as relay contacts
Discover the Horstmann product range now
OUR COMPETENCE
With our passion for medium-voltage technology, we are driving the digitalization
of energy grids. Our commitment to quality and innovation is the key to an efficient and secure energy supply.
Short-circuit & earth fault indicator
They are used to quickly locate faults in the power grid and thus enable rapid fault rectification and restoration of the power supply. The indicators are available for both overhead lines and cable networks.
Voltage detectors and test systems
For checking the absence of voltage on electrical systems. From mobile voltage testers to integrated voltage testing systems, our devices enable fast and reliable voltage testing.
Telecommunications solutions
Modern communication systems that enable the secure transmission and storage of operating and fault data. They include telecontrol technology and data transmission solutions for monitoring energy systems.
Earthing devices
Safety equipment for temporary earthing and short-circuiting of electrical systems. The devices protect personnel from dangerous voltages and ensure a safe work process in accordance with safety regulations.
Station accessories
Includes all supplementary components and tools for the safe operation of a local substation. This includes insulating rods, switching rods, safety signs and other aids for the daily operation and maintenance of the systems.
Product finder
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What our
customers say
FEEDBACK
The satisfaction of our customers is our best reference. Read here why energy suppliers, grid operators and industrial companies rely on our solutions.
Electro Trading ET AB
“Horstmann has been supplying high-quality products to the Swedish market since the late 1980s. Through continuous innovation, the company strives for a leading position in the Swedish energy market. Their dedication to quality and aftermarket support harmonizes perfectly with Electro Trading’s values, making them the ideal partner and manufacturer for products and solutions that strengthen our market position.”
Patrik Wihlborg, CEO
Omexom Elektrobau GmbH
“As a provider of customized energy technology solutions for grid connection, we at Omexom plan and build numerous turnkey transformer and transfer stations every year at our plant in Uedem. We also rely on Horstmann’s high-quality solutions, such as voltage detectors (Wega series) or short-circuit and earth fault indicators (ComPass B / Sigma D+ series).”
Felix Stenmans, Business Unit Manager
Westnetz GmbH
“We like to use the high-quality products from Horstmann GmbH in our assets, such as ComPass short-circuit and earth fault indicators or Wega series capacitive voltage indicators. In addition to the product quality, we particularly appreciate the company’s customer focus and ability to innovate.”
Bastian Wölke, Technical Product Manager
MS-Schaltgeräte
EWR GmbH
“Horstmann’s highly reliable short-circuit indicators have been used in the Remscheid electricity grid for a long time. Together, we are now taking the next step towards digitalization in the distribution grid. Horstmann responded very flexibly to our wishes and ideas and developed a new product with us and for us within a very short space of time.”
Frank Aschenbroich, Head of Electricity Grid
Electrical engineering works Fritz Driescher & Söhne GmbH
“Dipl.-Ing. H. Horstmann GmbH is one of Driescher’s most innovative partner companies with regard to the increasing demands for more digitalization in energy technology. In addition, Horstmann is always ready to listen to our concerns and wishes.”
Christoph Driescher, Managing Director
Latest news
WHAT’S NEW
With our enthusiasm for medium-voltage technology, we are shaping the future topics of digitalization and grid monitoring. Find out more about our company, events and new products.
Working at Horstmann
CAREER
Find out more about the world of work and the opportunities we offer experienced professionals, graduates and students
