Frenelsa
FRENOS ELÉCTRICOS UNIDOS S.A. (FRENELSA) is one of the world’s leading manufacturers of eddy current retarders for dynamometers, commercial vehicles dedicated to the transport of people and goods by road (buses, coaches, trucks, tractors and trailers) and other braking solutions.
We export more than 95% of our production to more than 50 countries on five continents.
Thanks to our experience and Know-How, we offer high-quality products, components and services, always seeking maximum customer satisfaction.
Unlike other brands, we manufacture all the components in our plant, so we have greater control over the manufacturing and assembly of the components and the requested delivery times.
Quality
Commitment
All FRENELSA staff accept personal responsibility in achieving this objective, and strive to exceed the expectations of our clients through strict compliance with internal procedures and regulations, contributing to improving SAFETY, HEALTH and the ENVIRONMENT.
Certification
For all these reasons, we have implemented and apply a quality system in accordance with the requirements of the DIN EN ISO 9001 standard, which is regularly verified by the TÜV CERT entity of Germany.
Responsibility
FRENELSA’s management recognizes that complying with the quality policy as well as current regulations and legislation is a key responsibility for the future, and is also committed to continuously improving the safety and health at work of all employees.
This entire means that today FRENELSA is a synonym of QUALITY.
Retarders
Customers
Countries
Models
Our values
FRENELSA IN THE WORLD

INNOVATION
Frenelsa RDI
Continuous research, innovation, the constant development of our products and diversification are the keys that allow us to be competitive in today’s environment.
The Know-How acquired in our more than 50 years of experience is the fundamental basis of our work.
With our sights set on the future, at FRENELSA we invest significant resources in Research and Development of our products. The use of advanced computer programs in design and simulation together with the most modern testing technology makes it possible for us to be at the forefront of our field.
All of this together with the most modern technology in the manufacture of the components of our products, makes our clients have the peace of mind that the products supplied by FRENELSA are reliable, safe and very profitable.
COMMITMENTS
We take care of the environment
Our products and the way we manufacture them actively contribute to the conservation of the planet.
The FRENELSA retarder reduces the emission of fine particles from friction brakes, minimizing the associated health risks.