Keller Electronics GmbH
Keller Electronics GmbH
Keller Electronics GmbH
At the Konstanz location, Keller Electronics manufactures your cable assemblies with precision, passion and a fine touch.
Whether custom-made or a complex system: the team knows exactly how to move your project forward.
You need complete systems? No problem. In Konstanz, tailor-made cable systems for a wide range of applications are created – fast, flexible and reliable. With modern workstations and smart processes, we bring your ideas to life.
We think ahead: in addition to cables, we manufacture complete assemblies, ready‑to‑install units and special solutions. For you, this means: less effort, more efficiency – and a partner who thinks along.
In Konstanz, we combine engineering enthusiasm with smart production.
Here, technology meets team spirit, precision meets experience and innovation meets deeply rooted enthusiasm for connection.
As part of the ENGESER Group, Keller Electronics has access to all company-wide technologies – from crimping and overmolding to automated high‑tech processes.
The team in Konstanz combines know‑how with passion and ensures that your projects are implemented reliably, efficiently and future‑proof.
It’s about more than measuring, testing and documenting.
For Keller Electronics, quality means taking responsibility for every detail – from the first incoming material to the final functional test. Just like ENGESER, our principle is zero tolerance. Because your product must function perfectly from day one.
Our quality management is regularly audited and certified according to DIN EN ISO 9001:2015. The certificates confirm the high process reliability in all our workflows.
Download certificate:
DIN EN ISO 9001:2015 > Keller Electronics GmbH (DE)
Our quality assurance is supported by digital workflows, structured test processes and modern methods – from cross‑section analysis to pull‑tests and high‑voltage tests. This ensures that every cable and every assembly meets your exact requirements.
… that products from Konstanz are already used today in space, medical devices, lighting systems and industrial machines worldwide?
Made in Konstanz – used all over the world and in space
At the Konstanz location, we manufacture cable systems and assemblies for applications that require the highest precision. From here, we supply medical technology with solutions for fully automated analysis systems, diagnostic devices and surgical lights. The aerospace sector also relies on our reliability – with components used in satellites and sophisticated high‑tech modules.
In addition, from Konstanz we support customers from industrial electronics, mechanical engineering, automation and lighting technology. Whether test equipment, control modules, motion‑control units or LED systems: each industry has its own requirements – and we deliver the right solution, directly from Lake Constance.
We also manufacture cable systems for applications in the solar and energy sector, where robust connection solutions, high weather resistance and durable material quality are essential. Our systems are designed for demanding environments and support reliable power generation and distribution.
Trust in our experience and expertise.

Keller Electronics GmbH
August-Borsig-Str. 11
D-78467 Konstanz
Germany
info@keller-electronics.de
Commercial Register No. HRB 382125
Register Court Freiburg
Steuer-Nr. 09048/13855
UstID DE 814604275
Managing Directors: Marcelino Expósito, Steffen Engeser
You want to make a difference? Then join us! Whether in Konstanz directly at Lake Constance or at the main site in Waldmössingen: with us, you’ll find tasks that are enjoyable, colleagues who support each other, and an environment where you can truly contribute.
We are looking for people who take action, think ahead and enjoy working with technology – whether in production, engineering, logistics or administration.
If there are currently open positions for our locations, you will find them on our career page. Have a look – your next job may already be waiting for you!
The easiest way to reach us is by email: info@keller-electronics.de. Our colleagues will take care of your request immediately.
Please read the privacy policy before sending us an email.
It all began in 1985, when Jürgen Keller founded Keller Electronics GmbH.
The mission: top‑class cabling for industrial computers. Success followed quickly. As the number of customers grew, so did the production depth, and over time the premises in Konstanz‑Paradies became too small.
In 2012, Jürgen Keller began searching for a strategic partner to secure the future of the company he had built. The contact with ENGESER was established quickly, and from the very first conversation it was clear that we were on the same wavelength.
Since 2013, Keller Electronics GmbH has been a 100% subsidiary of the ENGESER Group – a connection shaped by trust, shared values and a passion for technology.
The move to our current location in August‑Borsig‑Straße 11 marked another milestone on our joint journey.