RITZ Instrument Transformers GmbH:Ritz – Experience and Solutions|Together!

RITZ Instrument Transformers GmbH is one of the world´s leading specialists in the field of instrument transformers , cast resin applications, cast resin insulated busbar systems and cast resin insulated power transformers.

The present company’s origins go back to 1904. Based in Hamburg, RITZ now combines the experience of Ritz Messwandler (RITZ), the Messwandlerbau Bamberg (MWB), the Trans­­formatoren- und Röntgen­­werk in Dresden and the Wandler- and Transformatoren-Werk Wirges (WTW).

Today RITZ owns seven production plants all over the world. The company’s headquarters is located in Hamburg. Other production sites located in Germany are Wirges, Kirchaich in Lower Franconia and Dresden. At the inter­­national level, there are also factories in Marchtrenk (Austria), in Kecskemét (Hungary), Shanghai and Hart­­well (USA). Its customers include well-known companies in the field of energy supply and the electronics industry all over the world.

RITZ offers a large range of products for the low and medium-voltage range. It develops standard equipment but also manu­­factures customized products for specific customer requirements. Both small and large quantities can be produced.


  1. Address

    Wandsbeker Zollstraße 92-98
    22041 Hamburg
    Tel +49 40 51123-0
    Fax +49 40 51123-322


  2. Management

    Prof. Dr. Ingmar Grambow

  3. Employees

    More than 1,000 worldwide

  4. Business activity

    Medium-voltage transformers
    Low-voltage transformers
    Cast resin components