ABOUT ELESA

ENERGY TRANSFORMING SPECIALISTS


ELESA is backed up by more than 30 years' experience in the manufacture and marketing of transformers and wound magnetic cores. The know-how acquired over this time combined with an continuous training policy, a clear focus on innovation and constant improvement have been key to ELESA becoming a strategic supplier to customers from the most demanding sectors.



+ 6 %

ANNUAL INCOME
DEDICATED TO INNOVATION


+ 4.000 m2

PRODUCTION
FACILITIES


+ 30 countries

INTERNATIONAL
PRESENCE




Our history

1988

  • Estanislao Pérez founded Elesa Transformadores S.A. for the design, manufacture and sales of transformers for resistance welding equipment in the automotive market.

1990

  • Two shareholders entered the company: Expert Maschinenbau GmbH and Serra Soldadura SAU, which jointly take on 75% of the capital.

1992

  • The design, manufacture and marketing of cores in magnetic materials was started for all types of industrial applications.

1998

  • ELESA, the national leader in medium-frequency transformers (1 kHz), a technology to which the market transitioned from alternating current.

2004

  • In 2004, ELESA had its first 1 kHz frequency transformer approved at the top welding institute, SLV DUISBURG, in Germany.

2005

  • Serra Soldadura SAU takes on 75% of the capital, after purchasing Expert's share.

2008

  • The Serra Group, including ELESA, is purchased in its entirety by the aerostructure company, Aernnova.

2010

  • Approval of 1 kHz (78KVA & 111KVA) medium-frequency transformers at VW (Konzernlastenheft:Roboterschweibzangen 14.01.2010)

2012

  • Development of cores in amorphous and nanocrystalline materials, both complete and cut, for high-frequency applications.

2013

  • Development of 10 kHz transformers to reduce size and energy consumption.

2018

  • Aernnova acquires 100% of ELESA's capital.

2019

  • Aernnova approves investment for a new construction plant at the Errotaberri – Zarautz industrial estate.

ELESA TRAFOCORE © 2020