
Develops and manufactures solutions for enclosure climate control: heating, cooling, controlling, measuring, lighting.
STEGO Elektrotechnik GmbH
Schwäbisch Hall (headquarters) · Kennesaw, GA, USA · Nanjing, China · Epsom, United Kingdom · Jönköping, SwedenNew on Amplifa
Protecting sensitive electronics since 1980
STEGO Elektrotechnik GmbH, headquartered in Schwäbisch Hall, develops and manufactures products that protect sensitive electronics from cold, heat, humidity and condensation in enclosures and technical installation rooms. The portfolio includes enclosure heaters (with and without fans, touch-safe touchsafe heaters, PTC heaters of the Loop series and the CSL(F) 028 platform), filter fans and fans for enclosure cooling, thermostats and hygrostats for temperature and humidity control, LED lights, accessories such as sockets and pressure equalization elements, as well as sensors for condition monitoring, including the contactless Smart Current Sensor ESS 076 with IO-Link and 4–20 mA. The products serve to prevent condensation and corrosion, reduce the risk of failure and extend the service life of technical systems. Customers include e-mobility (charging infrastructure), wind turbine manufacturers, European energy suppliers, mechanical engineering and industrial automation. Founded in 1980 and family-managed, the company distributes its solutions through branches in Germany, the USA, China and the United Kingdom as well as a Scandinavian sales office, and with the IoT platform eightBytes it also offers cloud-based IO-Link condition monitoring. Production and logistics, including the automated warehouse (2017), are bundled at the Kolpingstraße site in Schwäbisch Hall.
- Site
- Schwäbisch Hall
- Processes
- Enclosure heaters (with/without fans, Touchsafe, PTC Loop series, CSL(F) 028), Enclosure cooling with filter fans and fans (Filter Fan Plus series), Temperature and humidity control (thermostats, hygrostats), Sensors for condition monitoring (Smart Current Sensor ESS 076, IO-Link, 4–20 mA), LED lights and enclosure lighting, Accessories: sockets, passive ventilation, pressure equalization, Cloud-based IoT solution / eightBytes platform for IO-Link condition monitoring, Enclosure climate control: heating
- Materials
- PTC heating technology, IO-Link sensor technology, LED lighting technology, Cloud-based IoT solution
- Certificates
- External testing and certifications
- Founded
- 1980
- Industries
- E-mobility (charging infrastructure), Wind energy, Energy supply, Mechanical engineering, Industrial automation
- 01
Engineering and product development
- 02
Production in Schwäbisch Hall
- 03
Quality inspection and certification
- 04
Automated warehouse and logistics center
- 05
Sales via branches worldwide
- 06
IoT platform eightBytes for condition monitoring
Technologies and processes
PTC heating technology
Compact PTC heaters of the Loop series for touch-safe heating of smaller enclosures.
IO-Link sensor technology
Sensors for condition monitoring and energy monitoring, including the Smart Current Sensor ESS 076 with IO-Link and 4–20 mA.
LED lighting technology
LED lights for illuminating enclosures with long service life.
Cloud-based IoT solution
eightBytes platform for IO-Link-based condition monitoring in industrial automation.
Locations

Schwäbisch Hall
DEHeadquarters, administration, production and logistics center with automated warehouse
- Lot size
- Custom solutions also in smaller lot sizes
- Automated warehouse
- Production systems for enclosure heaters, fans, sensors and lights
Kennesaw, GA
USBranch STEGO, Inc. for the American market
Nanjing
CNBranch (南京思拓戈电气有限公司) for the Chinese market
Epsom, Surrey
GBBranch STEGO UK LTD. for the United Kingdom
Jönköping
SEBranch STEGO Norden AB for Scandinavia
Products and systems



Inside the production



Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Enclosure heaters (with/without fans, Touchsafe, PTC Loop series, CSL(F) 028)Engineering | – | – | – | – | – |
| Enclosure cooling with filter fans and fans (Filter Fan Plus series)Engineering | – | – | – | – | – |
| Temperature and humidity control (thermostats, hygrostats)Engineering | – | – | – | – | – |
| Sensors for condition monitoring (Smart Current Sensor ESS 076, IO-Link, 4–20 mA)Testing | – | – | – | – | – |
| LED lights and enclosure lightingEngineering | – | – | – | – | – |
| Accessories: sockets, passive ventilation, pressure equalizationEngineering | – | – | – | – | – |
| Cloud-based IoT solution / eightBytes platform for IO-Link condition monitoringEngineering | – | – | – | – | – |
Additional services
Reference customers
Quality and testing
STEGO products are designed for applications where failures must be ruled out, such as in critical infrastructure; extensive certifications and external testing confirm the safety and quality requirements.
| Evidence | Schwäbisch Hall |
|---|---|
| External testing and certifications |
Milestones
- 1980
Founded in Gelbinger Gasse in Schwäbisch Hall by Werner Schmid, Hartmut Eisenhauer and Isidor Gloning; the initial letters of the founders' names S, E and G form the core of the STEGO wordmark.
- 1981
The first enclosure heaters are built.
- 1989
Move to the first self-financed new building with 1,200 m² on Robert-Bosch-Straße in the Stadtheide industrial park.
- 1993
Start of internationalization.
- 1999
Construction of the new building at today's site on Kolpingstraße.
- 2006
Market launch of the touch-safe touchsafe heater.
- 2007
Hartmut Eisenhauer leaves the company.
- 2009
LED lights come onto the market.
- 2012
Werner Schmid leaves the management; Elmar Mangold joins the management.
- 2016
Introduction of the new filter fan series Filter Fan Plus.
- 2017
Construction of the logistics center with an innovative automated warehouse.
- 2018
Isidor Gloning retires; Mikhail Volkov becomes a member of the management.
- 2021
Market launch of a cloud-based IoT solution for industrial automation.
- 2023
Founding of the start-up eightBytes, the IoT platform for IO-Link-based condition monitoring; move into the new administration building on Kolpingstraße.
- 2024
Mikhail Volkov leaves; Michael Dehnert becomes his successor in the management; introduction of the new STEGO logo.
- 2025
Martin Wörner takes over the position of CFO of STEGO Holding GmbH on July 1.