As a pioneer in the industrial production of electrical installation material, Ernst Spelsberg and Walther Kaiser found the company Kaiser & Co in Schalksmühle at the beginning of the 20th century.
Initially they produce insulation pipe. Together with other companies in the region, the company founders establish the foundation for a strong electrical industry in Sauerland.
Soon after its founding, the young company begins to grow. Production is booming during the first expansion construction.
In 1926 the company presents its first wet room box and kicks off an important commercial line that is still important to this day. Unlike the plastics that are used today, the first wet room box was made of cast iron.
Two years later, Günther Spelsberg took over management of the company in its second generation. The company was renamed Kaiser & Spelsberg during this period.
The first plastic Bakelite opens up entirely new possibilities for the electrical installation industry. Kaiser & Spelsberg purchase a Bakelite hand press. It is used to produce the first plastic junction box.
The company specialises in junction boxes for wet room surface-mounted installation. In 1947 the Hannover export trade fair celebrates its première. One year later, Kaiser & Spelsberg presented itself at the most important industrial trade fair.
In 1956 Kaiser and Spelsberg parted ways. The company was renamed to the current name, Günther Spelsberg. The first expansion of the product assortment took place one year later. Spelsberg now also produces attachment bushes, thermoplastic junction boxes and wet room surface-mounted distributors.
Spelsberg begins to also offer its enclosures in the industrial sector. Since then, the company has increasingly expanded its offering of versatile enclosure systems. Over the course of time, Spelsberg files for numerous patents. Many of these patents continue to write the success story: This includes the “Red Series” connection boxes.
The company expands continuously. In 1974 a new production hall with an area of around 3500 square metres of additional storage and production space is built on Jahnstraße.
The Spelsberg product range expands continuously. The company applies for numerous patents related to junction boxes and enclosures. Double membrane bushings, tension relief elements and automatic device enclosures are just a few of the innovations that assure improved assembly.
Another pioneering moment: Development of one of the first module junction boxes for photovoltaics opens a new business sector for Spelsberg.
Two new locations each in Germany and abroad were added in the 1990s. Firstly, Spelsberg moves from Jahnstraße to a new building in the Ramsloh industrial area. Secondly, after the German re-unification, the company invests in a production facility in Buttstädt, Thuringia.
On 17th February 1995, the Czech company SPELSBERG spol. s r.o. is founded as the first subsidiary of Spelsberg in Prague. The second foundation takes place on 24th October 1997 in England with Spelsberg els UK Ltd.
At the start of the new millennium Spelsberg presents its new WKE junction boxes to maintain electrical functionality in case of a fire. The technology of the housing as a special thermoset provides additional safety in fire-protected areas.
An additional emphasis is the construction of a testing and certification centre accredited by VDE and UL. Spelsberg now offers many of its proven products in industrial quality. This to the high-quality materials, they are especially waterproof, resistant to impact and UV-resistant.
Further subsidiaries are founded in 2003 in Spain with SPELSBERG S.L and in the Netherlands with Spelsberg B.V.. On 3rd December 2007, the fifth European subsidiary follows in Denmark with Spelsberg A/S.
In 2004 the company celebrates its 100th anniversary. Spelsberg has stood for tested quality in electrical installation for 100 years and remains a family-operated company with production in Germany to this day.
In 2011 Spelsberg continues to grow. A new administrative building is constructed in Schalksmühle . With the purchase of the neighbouring factory grounds in Buttstädt, capacity is also expanded there.
Since parting ways with Kaiser, Spelsberg has registered 80 patents Germany, Europe and around the world. Many of the brands and samples have developed into prove products within the sector. Names like Abox, Red Series, the small AK distributor and the GTi enclosure series are inseparable with the name Spelsberg.
In addition, special solutions for photovoltaics or concrete installation are distinguished by their special technologies. In 2015 the company celebrates its 111th year of existence and brings a new generation of AK small distributors to the market.
The steady growth has continued unstoppably since 2016. In addition to the site expansion in Schalksmühle through the purchase of buildings in the industrial area, the company was enlarged by five additional subsidiaries:
An expansion of the product range was realized from 2018 with the GEOS industrial and outdoor enclosures and GEOS cabinets.
Since 2019, Spelsberg has also been offering BCS e-bike charging stations and is steadily establishing itself in the emobility market with customer-specific solutions. The future is green with Spelsberg!
Especially in challenging environments of enclosure solutions with customer-specific requirements, the technical sales department is available to advise customers.