Steca has long stood for ideas and innovations as an electronic manufacturing services (EMS) provider and manufacturer of Steca brand product lines in solar electronics and battery charging systems. Our capability and personal responsibility allow us all to create high-quality individual electronic products and to distribute them on a global scale. Simple business processes, fair partnerships and transparent communication are perceptible and contribute to our joint success.




The success of a project is determined by well thought out and coordinated processes, combined with the expertise, flexibility and experience of a modern service company. Steca has mastered these different steps and processes and guarantees completion to deadlines, consistent high quality and an excellent price-performance ratio.


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As a leading supplier of products for the solar electronics industry, we set the international standard for the regulation and control of solar energy systems. In the three market segments PV grid connected, PV off grid and Solar thermal, the Steca brand is synonymous with innovation and vision. In conception, development, production and marketing, the company is committed to the highest quality standards.

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Steca battery charging technology stands out from the start thanks to its high quality and durability. For decades we have been developing efficient and user-friendly charging technology in cooperation with leading battery manufacturers and institutes in order to ensure that you can use your batteries safely.

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We would be glad to hear about your ideas and questions related to our company, our products and services - send us a message, we will get back to you right away.
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Steca Elektronik GmbH

Fon: +49-(0)8331-8558-0
Fax: +49-(0)-8331-8558-131

Mail: info@steca.com
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Electronics services
Electronics, Development Services

Fon: +49-(0)8331-8558-240
Fax: +49-(0)-8331-8558-131

Mail: Michael.Ackers@steca.com
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Solar and Energy
Solar electronics,
Battery charging systems

Fon: +49-(0)8331-8558-100
Service: +49-(0)8331-8558-833
Fax: +49-(0)-8331-8558-132
Mail: info@stecasolar.com
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Heating controllers


Resource-saving heating techno­­logy

The entire Steca product portfolio is hallmarked by high performance, convenient installation and easy operation:
Heating circuit controllers provide resource-saving and energy-efficient control of heating circuits.

The use of so-called mixers represents significant progress in this area: they direct cooled return water to the hot boiler or buffer storage tank water, to ensure that the supply temperature (temperature of the heating water flowing to the radiators and underfloor heating system) complies with the actual heat requirement. The heating circuit controller controls this process depending on the room or external temperature.

Our heating controllers allow for the energy-optimised and user-friendly control of a mixed heating circuit: a constant comparison of the external or guide room temperature with the selected room temperature keeps the losses in the piping system as low as possible via constant adjustment of the supply temperature. Our controllers are the most energy-efficient way of controlling a heating circuit.



Steca TH A603 M

Heating circuit controller (Master)
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Steca TH A603 MS

Heating circuit controller (Slave)
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