Our Locations

With 4 locations in Germany and 10 offices worldwide, we are always there for you !






REO Center of Competence - Design and Development facility in Germany 20/07/2016

REO AG established it’s Center of Competence in Berlin in 1925. It is the global Center of Competence for power inductors, chokes and transformers, used in the railway industry and industrial applications.

Resounding success at the SPS Parma
Resounding success at the SPS Parma 31/05/2016

This year again, there were a lot of innovations to see at the SPS Parma.



REO at SPS Parma
REO at SPS Parma 25/04/2016

This year REO exhibits for the fourth time at the SPS Parma and we cordially invite you to get to know the following new products :



New filter series for improved energy efficiency
New filter series for improved energy efficiency 21/04/2016

REOWAVEpassive for drive and UPS systems

In the field of inductors for energy efficiency REO has developed a new filter series, which is particularly suitable for the drive technology, but also for UPS systems.

REO at Win Istanbul
REO at Win Istanbul 10/02/2016

Visit us again this year from March 17th to 20th at the WIN Istabul ! MORE

Visit REO at SPS IPC Drives in Nuremberg 02/10/2015

Europe's leading exhibition for electric automation will be held  in Nuremberg from 24 -  26.11.2015.

This year you will find REO in a new hall with a larger stand. REO can be found in Hall 4 on Stand 150 . Our focus this year will be amongst other things : 

  • REOWAVE passive IP20 version, which can reduce energy consumption by 30% 
  • New Innovative 5 - limb chokes a space saving cost effective solutions including liquid cooled version 


We look forward to seeing you there.


90 years REO 30/09/2015

… with tradition, innovation, and technical expertise in the future

The company Haase & REO was founded on 17.08.1925 in Berlin by Boris Reichsfreiherr von Wolff.
In the following years, resistors for testing instruments and ballasts for arc lamps were produced. At that time adjustable resistors – whether rheostats or potentiometers – were much sought-after and necessary products in order to ensure the advancement of the electrotechnical age.