HANNOVER MESSE 2018, 23 - 27 April
Exhibitor 2018

Horstmann, H.

Logo Horstmann, H.

Company Data

Dipl.-Ing. H. Horstmann GmbH

Humboldtstr. 2
42579 Heiligenhaus
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Fax: +49 2056 976 140


Ms. Kirsten Geske
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Type of company

Year founded

Company profile

Dipl. Ing. H. Horstmann GmbH is a medium-sized family-owned company based in Heiligenhaus (Germany). Being centrally located in the triangle formed by the towns of Düsseldorf-Essen-Wuppertal we have been providing our customers with most reliable services in the area of electrical energy supply for 65 years. Our high-grade products and solutions for the medium-voltage technology are recognized and used all around the world.

The company's principal departments are located in Heiligenhaus near Düsseldorf. Our sales activities and tasks are coordinated from this location.
Our progressive development department and sophisticated production facility for electronic devices are further key areas of activity in this location.

Company website



- Short-circuit and earth fault detection from only 3 single-phase current sensors - Phase-selective fault indication and Fault signalling - Load-dependent self-adjustment of fixed values - Single- and double flashing mode for ring and radial operated distribution networksread more


- Designed according to IEC 61243-5 (VDE 0682-415) - Voltage detector - Phase comparator - Interface detector - Phase-sequence indicator - Harmonic voltage and current measurement - Phase angle measurement - LCD display - Measured data storage - Data transmission via USB interfaceread more

ComPass B

- For all types of networks/neutral point treatments - Error indicator: 2 directional arrow LEDs (A, B) and OLED display - 6 earth fault detection methods - High-precision current and voltage measurement - Monitoring of the parameters voltage (V), current (I), load current (B or A), power factor (cos more

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