About us
„Welcome to TMC! We protect your electric windings, lasers, circuit boards, and much more against overheating.“
Dr. Heino Freudenberg, Managing Partner TMC
TMC Sensortechnik GmbH, based in Bretten (Germany) and Police nad Metují (Czech Republic), stands for innovative overheating protection solutions. TMC offers solutions for designers and users seeking cost-efficient, high-performance temperature controllers or temperature sensors that can be integrated with maximum efficiency.
Our history
19/06/1995
TMC Sensortechnik GmbH was founded by Dipl.-Ing. Bruno Gengenbach, Dipl.-Ing. Jens Radbruch, and Dipl.-Ing. Udo Witteck.
1995
The first miniaturized bimetal switch “C1” was developed, along with the fully automated production line designed for its manufacture. The first patents were submitted.
1996
Relocation to the new company building at Westliche Gewerbestraße 3, 75015 Bretten.
1997-1999
Launch of the high-performance temperature controllers “C4” and “C8”.
2000
Launch of the “MF” motor protection sensor based on PTC technology.
2005
Expansion of the production site with Hall #2 in Bretten, including the installation of a second, more powerful production line.
2008
Launch of the new latching switch “R”.
2010
Launch of a wire-free sensor called “MR”, based on PTC technology in THT design.
2014
Launch of the world’s smallest bimetal switch, called “F”.
2016
Launch of the “S” temperature sensor, based on Pt1000 technology.
2019
Launch of the N series for plug protection, starting with Schuko plugs.
18.03.2021
Acquisition of TMC Sensortechnik GmbH by Dr. Heino Freudenberg, a family entrepreneur from Heidelberg. The two founders, Bruno Gengenbach and Jens Radbruch, supported the generational transition for a further three years.
2022
Launch of the new N2 product generation (NEMA for the US market) as well as new materials in the areas of bimetal and insulation.
2022
Foundation of the sister company BGF Enztech GmbH to expand technical capabilities in precision stamping and injection molding of high-performance plastics.
19.06.2023
Opening of the new factory in Police nad Metují, Czech Republic, initially for the production of motor protection sensors.
2024
Launch of the innovative “Click & Play” system for temperature sensors (Pt1000, PTC, NTC) and bimetal switches in cooperation with our sister company BGF Enztech, aimed at reducing customers’ product and assembly costs.
2025
Launch of the H1 switch for 10 A and above.
Our history
19/06/1995
TMC Sensortechnik GmbH was founded by Dipl.-Ing. Bruno Gengenbach, Dipl.-Ing. Jens Radbruch, and Dipl.-Ing. Udo Witteck.
1995
The first miniaturized bimetal switch “C1” was developed, along with the fully automated production line designed for its manufacture. The first patents were submitted.
1996
Relocation to the new company building at Westliche Gewerbestraße 3, 75015 Bretten.
1997-1999
Launch of the high-performance temperature controllers “C4” and “C8”.
2000
Launch of the “MF” motor protection sensor based on PTC technology.
2005
Expansion of the production site with Hall #2 in Bretten, including the installation of a second, more powerful production line.
2008
Launch of the new latching switch “R”.
2010
Launch of a wire-free sensor called “MR”, based on PTC technology in THT design.
2014
Launch of the world’s smallest bimetal switch, called “F”.
2016
Launch of the “S” temperature sensor, based on Pt1000 technology.
2019
Launch of the N series for plug protection, starting with Schuko plugs.
18.03.2021
Acquisition of TMC Sensortechnik GmbH by Dr. Heino Freudenberg, a family entrepreneur from Heidelberg. The two founders, Bruno Gengenbach and Jens Radbruch, supported the generational transition for a further three years.
2022
Launch of the new N2 product generation (NEMA for the US market) as well as new materials in the areas of bimetal and insulation.
2022
Foundation of the sister company BGF Enztech GmbH to expand technical capabilities in precision stamping and injection molding of high-performance plastics.
19.06.2023
Opening of the new factory in Police nad Metují, Czech Republic, initially for the production of motor protection sensors.
2024
Launch of the innovative “Click & Play” system for temperature sensors (Pt1000, PTC, NTC) and bimetal switches in cooperation with our sister company BGF Enztech, aimed at reducing customers’ product and assembly costs.
2025
Launch of the H1 switch for 10 A and above.
TMC at a glance
9
Million EUR revenue in 2023
2
Sites in Germany and the Czech Republic
>30%
Revenue from products less than 4 years old
98%
of raw materials sourced in Europe
>80
Employees from more than 20 nations
>200
Million temperature monitors produced since 1995
Our Values
The foundation of our success and the guiding compass of our actions are our core principles, summed up in a single sentence: “With honesty, togetherness, and superior expertise, we perform for our customers.”
Let us take a closer look at this statement and the elements behind it:
- The key sentence is: “…we perform for our customers.” This means our customers are both the starting point and the destination of our actions. Everything we do is dedicated to serving our customers. We measure our performance through three components:
- Entrepreneurship within the enterprise: He/she understands customer needs, identifies opportunities for TMC, develops innovative solutions, and implements them profitably.
- Passion: Brings strong positive energy and passion for detail, inspiring others to achieve even greater performance.
- Results: Delivers agreed results on time and within budget, while helping others to achieve their goals successfully.
- We deliver this performance through three elements: honest, together, and with superior expertise.
- For us, honesty consists of two components:
- Integrity: He/she always does what is right for TMC as a whole.
- Steadfastness: Faces reality head-on, is honest with oneself and others, and stays committed to our agreed goals — even when challenges arise.
- We measure our collaboration based on two elements.
- Teamwork: Acts with empathy, respect, and helpfulness, and enjoys working in teams with strong colleagues who bring diverse and complementary strengths.
- Open Communication: Communicates clearly, openly, and persuasively, winning both the hearts and minds of others.
- Our expertise is understood dynamically and is based on three components:
- Judgement: He/she is able to distinguish the important from the unimportant and prioritizes what matters most.
- Expertise (for our leaders; other roles require different types of expertise): Recognized expert in at least 3 of 8 fields – Sales/Marketing, Procurement, R&D/Innovation, Production/SCM, Finance/Controlling, IT, Leadership/HR, Strategy.
- Learning: Open to new ideas and committed to continuous learning and improvement.
- In total, we consider four elements: honesty, togetherness, expertise, and performance. Each of these four elements is described by 2–3 components. The description is structured in such a way that measurement becomes quite straightforward:
- Anyone who fulfills the components “always and everywhere” we call a “Master”. This is a very high standard and — honestly — none of us is always and everywhere a “Master”.
- Anyone who fulfills the components “most of the time” we call a “Pro”. Those who achieve this consistently are among the key contributors in our company.
- Anyone who fulfills the components “often” we call an “Advanced”.
- Anyone who fulfills the components “sometimes” we call a “Beginner”.
- Anyone who does not wish to fulfill the components, or even explicitly violates individual components, is not in the right place in our company.
- A successful career at TMC moves between different stages: While we place great emphasis on honesty from the very beginning (= integrity, steadfastness), collaboration (= teamwork, open communication) can be continuously improved and refined over time. Expertise varies depending on how long we have been in a particular role. Anyone pursuing a career with us will therefore repeatedly move from being a “Pro” or even a “Master” back to a “Beginner,” as each new role must first be learned. What matters less is the level of expertise someone has today, and far more how quickly he or she is willing to learn. Performance then usually emerges as the result of the three preceding elements: honesty, togetherness, and expertise.
- We are happy to provide feedback along these leadership values, and our career decisions are strongly based on their consistent fulfillment. The following chart summarizes our leadership values. It is displayed in all break rooms, meeting rooms, and key offices, reminding us every day of the standards we strive for.
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Certifications and Awards
TMC Sensortechnik GmbH is ISO-certified (9001, 14001) and meets all relevant permits worldwide: from VDE and TÜV (Germany) to KEMA (Europe), UL and ETL (USA), as well as CQC (China) and further special certifications.
Customers and Development Partners
We thank our customers and development partners for their trust and for decades of successful collaboration!
