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ISOLTRA Transformatorenbau GmbH

is a long-established company, with almost 40 years experience in manufactoring transformers. This know-how supports the development and manufacturing of electrical components and customized solutions.


At our sites, the following services are covered:
- Manufacture of components with a total weight up to 5 tons
- Three-phase transformers / inductors to 1000 kVA
- Single-phase transformers / inductors to 630 kVA
- Air and water-cooled versions
- Production of customized windings
- Own core production, flexible delivery times
- Repair and Overhaul