The company begins its activity with the design and manufacture of transformers for resistance welding equipment.
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Founded in 1988, ELESA specializes in the custom design and manufacture of high-performance transformers and magnetic cores for demanding industrial applications.
Over four decades of engineering evolution, the company has consolidated two core product divisions: water-cooled transformers and wound magnetic cores.
Today, ELESA manufactures both product lines at its state-of-the-art facilities in Itziar-Deba (Spain), delivering tailored electromagnetic solutions to a global client base.
The company begins its activity with the design and manufacture of transformers for resistance welding equipment.
ELESA expands its activities with the design and manufacture of magnetic cores for industrial applications.
ELESA expands its industrial capacity with a new plant dedicated exclusively to the manufacture of magnetic cores.
2008
ELESA becomes part of the Aernnova Group, marking the beginning of a new stage in the company’s development.
ELESA begins manufacturing magnetic cores for high-frequency applications.
ELESA begins the development and manufacture of transformers for microwelding applications.
ELESA moves its operations to new 7,000 m² facilities, bringing the manufacture of its two product lines together at a single plant.
Production facilities
in Itziar-Deba
International presence
Wound magnetic cores
and water-cooled transformers
The experience accumulated across its two product lines has enabled ELESA to develop strong industrial expertise, combining know-how in transformers with advanced magnetic technologies.
ELESA is the only manufacturer in Spain of resistance welding transformers, as well as amorphous and nanocrystalline magnetic cores.
ELESA is part of AERNNOVA, a global industrial group with a presence in strategic sectors such as aerospace and automotive.
As part of the group, ELESA leverages strong international backing, a global commercial network, and comprehensive technical support. This integration fosters powerful synergies with sister companies specializing across diverse industrial processes, driving continuous innovation and reliable service worldwide.
