Hygrometer controls cabinet climate.

The new ETF 012 from STEGO is the evolutionary answer to increasing demands in control cabinet climate management. Building on decades of application experience, the proven hygrotherm has been completely redesigned – setting new standards in functionality, space efficiency, and global usability.

At just 35 mm wide, the ETF 012 saves valuable space on the DIN rail inside the control cabinet. This not only allows more flexible positioning but also creates room for additional components – a crucial advantage in compact enclosures and control environments. The wide voltage range from 24 V to 240 V AC and 24 V to 60 V DC eliminates the need for multiple variants, reducing inventory and installation effort.

The ETF 012 features modern push-in terminals. Electrical connections are established quickly, securely, and completely without tools – a significant simplification compared to conventional screw terminals. This saves installation time and minimizes potential wiring errors. An integrated LED reliably indicates the device’s operating status.

The redesigned electronics of the ETF 012 measure temperature and humidity accurately and respond rapidly to changing ambient conditions. The adjustable temperature range extends from 0 to +60 °C, while relative humidity can be regulated between 50 and 90 %, each with a hysteresis of ±1. An optimized internal layout, with heat-emitting components positioned in the upper housing section, further enhances measurement performance.

Electronic hygrotherms such as the ETF 012 monitor temperature and relative humidity inside control cabinets and technical enclosures. When defined thresholds are exceeded, they automatically activate heaters or fans – effectively preventing condensation. Excess humidity can impair insulation, promote corrosion, or, in the worst case, cause short circuits. Hygrotherms therefore play a key role in maintaining operational safety and extending the service life of sensitive components – especially in applications exposed to fluctuating environmental conditions or low ambient temperatures.

With its dual °C/°F scale and international certifications (UL, CE), the ETF 012 is suitable for worldwide use. Its robust design enables operation at ambient temperatures from –40 to +70 °C and up to 95 % relative humidity (non-condensing). High switching capacity (16 A at 240 V AC) and long service life make it the first choice for demanding applications in control cabinets and technical installations – particularly in mechanical engineering, infrastructure, wind energy, and industrial systems.

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Analog becomes Digital.

Converter digitises up to three analogue signals – compact, rugged, and ideal for retrofits in harsh industrial environments.

Analog sensors remain a staple in many industrial environments – reliable and robust, but not digitally connected. To help bring this legacy technology into modern automation systems, STEGO has introduced the IOC 074 IO-Link Converter. This compact device transforms analog signals into digital process data and transmits them via the IO-Link protocol – enabling efficient retrofitting of existing infrastructures.

The IOC 074 is the first IO-Link converter on the market capable of digitizing up to three analog signals (4–20 mA and 0–20 mA) simultaneously. With dimensions of just 14 mm in diameter and 63 mm in length, it is perfectly suited for tight installation spaces, control cabinets, enclosures or compact system layouts. Its stainless steel housing is rated IP65, IP66, and IP67, offering reliable protection even in harsh industrial environments.

Installation is straightforward: the converter is connected between the analog sensor and the IO-Link master using standard M12 connectors and cables. A universal pipe clip is included for secure and flexible mounting.

No calculations needed.
Configuration is fully software-based using IO-Link tools such as “LR-Device” and the corresponding IODD file. Users can easily define measurement ranges for temperature, pressure, or other physical parameters.

The IOC 074 handles the scaling automatically and supplies pre-processed values to the control system – with no need for manual conversions or additional hardware. This makes it a user-friendly solution that integrates seamlessly into existing infrastructures and significantly simplifies commissioning.

Future-ready retrofit.
For machine builders, plant operators, or retrofit projects in manufacturing, the IOC 074 delivers real added value: analog sensors can be upgraded to IO-Link with minimal effort. This not only enables integration into modern control systems but also enhances process transparency and operational efficiency. This is a smart, straightforward, and cost-effective path toward digitalization in industrial environments - a practical answer to the challenges of connected manufacturing.

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Fighting condensation in enclosures.

The CS 032 enclosure heater from STEGO with fan delivers high performance and efficiency in a compact design, making it easy to install even in confined spaces. It is available as a Basic version with fixed heating power or as a Plus version with intelligent variable output control.

Electrical systems, particularly those housed in enclosures, often face harsh environmental conditions. This is especially true in power supply systems, renewable energy applications such as wind turbines, infrastructure projects, and mechanical engineering. These enclosures are frequently exposed to significant temperature fluctuations and high humidity levels, leading to the risk of condensation buildup.

Condensation can cause short circuits, which at best result in system shutdowns but, in the worst case, can damage or destroy electrical and electronic components. A proven solution to prevent this is the use of enclosure heaters.

With the CS 032 enclosure heater, STEGO Elektrotechnik introduces two compact models – CS 032 Basic and CS 032 Plus – both featuring integrated fans that combine efficiency and performance with flexible placement and easy installation.

With dimensions of 66 mm (width), 96 mm (height), and 120 mm (depth), these heaters fit even in densely packed enclosures. Designed for operating temperatures from -45°C to 70°C (-49°F to 158°F) and relative humidity levels of up to 90%, they offer a wide range of application possibilities. The units are available for 220-240 V AC and 110-120 V AC power supplies, ensuring compatibility across various electrical systems.

CS 032 Basic: Compact with Three Heating Power Options.
The Basic version is available in three models with fixed heating capacities of 600, 800, and 1,000 W. It can be easily integrated into an existing control system.

This enclosure heater offers flexible mounting options, allowing the warm airflow to be directed either sideways or vertically. Like the Plus version, it features an integrated automatic temperature monitor, which activates overheating protection in the unlikely event of a fan failure.

CS 032 Plus: More Flexibility with Enhanced Efficiency.
The Plus version features variable heating output ranging from 600 to 1,200 W and intelligent control for optimized heating operation. The desired temperature can be continuously adjusted using a control dial.

In cases of significant temperature drops (e.g., in extremely cold environments), the quick heating function activates, operating at maximum heating power and fan speed. When only minor deviations from the target temperature occur, the heater switches to an energy-saving mode with reduced output, adjusting over time. This optimizes energy consumption, reducing power usage by up to 23%.

The CS 032 Plus also offers greater flexibility in installation — it can even be mounted upside down. Another key benefit is the simplified inventory and preparation process, as only one unit is needed for various performance requirements.

Easy Installation and Safe Operation.
Space inside an enclosure is often limited, making installation challenging. To simplify this, the CS 032 comes with both a clip-mounting kit for 35 mm DIN rails and a screw-mounting option.

The push-in terminal allows for quick and tool-free electrical connection, reducing installation time by up to two-thirds while ensuring a stable and secure connection — even during transport of pre-configured enclosures.

When working inside an enclosure, safety is a top priority, particularly protection against accidental contact. The touch-safe plastic housing of the CS 032 enclosure heater ensures that it remains at a safe temperature, preventing any risk of injury during maintenance.

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Chinese expansion.

Specialist in enclosure climate control strengthens its position in China.

LtoR: STEGO Managing Director Elmar Mangold, Branch Manager Junxiao Hu, Managing Director Michael Dehnert

The STEGO Group has opened an independent subsidiary with sales operations and warehouse facilities in the megacity of Nanjing (CN) As one of the leading providers of sustainable electronics protection and climate control solutions for enclosures, its technical installations safeguard sensitive electronic components throughout the world. To complement its existing eight subsidiaries, STEGO is converting its former sales office in Nanjing, a major economic hub in China, into an independent subsidiary with its own office organisation and warehouse. This transformation will ensure the consistent availability of STEGO products in the important Chinese market and enables invoicing in the local currency, Renminbi (Yuan), simplifying billing and transaction processes.

“We have been successfully operating in China for several years with our sales office and through trade shows. Establishing our own subsidiary is a logical next step. It allows us to be closer to our customers in China and respond even more effectively to the specific needs of this important market,” explains STEGO Group Managing Director Elmar Mangold. The designated head of the new subsidiary is Junxiao Hu, who studied engineering in Hanover, Germany, and lived there for several years. Since 2019, he has been working in sales at STEGO. With his experience in both cultures, he understands the differences between Germany and China, making him well-equipped to lead the new subsidiary successfully.

The new subsidiary in China not only facilitates access to the Chinese market but also serves as a strategic base for the broader Asian region. This move strengthens STEGO's international business and lays the foundation for future growth in this dynamic market.

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LED enclosure light.

The innovative LED enclosure light SL 025 expands STEGO Elektrotechnik portfolio . This new light is specifically designed for use in enclosures and cabinets with high component density. In addition to providing optimal illumination and easy handling, it also offers benefits for efficient sourcing through its all-in-one approach.

"With the SL 025, we offer our customers a versatile, high-performance, and user-friendly lighting solution for enclosures and technical installation spaces," commented Maximilian Vosseler, Senior Product Manager at STEGO. "The combination of high light quality, flexible mounting, and additional features like the integrated socket and motion sensor makes the SL 025 the ideal choice for industrial applications."

The LED enclosure light SL 025 impresses with its compact design and flexible mounting options. The light is equipped with an on/off switch and a motion sensor, making an additional door contact switch unnecessary. Thanks to the wide voltage range of AC 100-240 V, 50/60 Hz, the SL 025 can be easily used anywhere in the world.

The integrated socket allows for the simple operation of additional electrical devices such as laptops or diagnostic equipment. There are seven socket variants available, meeting the requirements of European and international standards, including those of the USA and Australia.

The all-in-one approach of the SL 025 light brings efficiency gains for companies that build enclosures. The combination of a wide voltage range, integrated motion sensor, and a broad selection of sockets makes the SL 025 a favorite among purchasers. With fewer device variants, a wider range of applications can be covered, creating synergies in procurement and inventory management.

The SL 025 is equipped with LED technology that ensures homogeneous illumination inside the enclosure. With a power consumption of 4 W and a luminous flux of 560 lumens, the light provides glare-free, daylight-white lighting with a color temperature of 6,000 to 7,000 K. This ensures accurate color rendering and enhances user safety through natural vision.

The robust and flat plastic housing of the SL 025, made in light gray according to UL94 V-0, is designed for durability. The light offers IP20 protection and Class I safety and can operate within a temperature range of -40 to +60 °C. With a long lifespan of 60,000 operating hours, the LED light is virtually maintenance-free.

The light can be mounted with screws either on its narrow or wide side, or it can be attached in enclosures using magnetic mounting without additional installation effort. This flexibility facilitates integration into existing systems and allows for practical application.

The LED enclosure light SL 025 is globally certified, offering safety through approvals from VDE and UL, with EAC and CCC certifications to follow shortly. This ensures reliable and safe operation in a wide range of applications.

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Power consumption in plants.

STEGO Elektrotechnik has introduced the Smart Sensor Current ESS 076, which revolutionizes efficiency and spending in industrial plants. This smart sensor offers solutions to a wide range of challenges faced by plant operators. As an IO-Link sensor, the ESS 076 enables the rapid adjustment of parameters and the transmission of real-time data. With its additional 4-20 mA interface, the ESS 076 can be integrated easily into current projects.

Monitoring electricity consumption helps identify inefficient operating conditions and/or energy wastage. The ESS 076 provides accurate measurement of power consumption, enabling plant operators to take action to improve energy efficiency and reduces costs. The sensor, using contactless technology, measures AC currents up to 100 A on cables up to 11.4 mm in diameter to detect power consumption. With its analogue 4-20 mA and digital IO-Link interface, the ESS 076 can be easily integrated into existing systems to collect energy efficiency data. In addition, the sensor directly outputs energy consumption digitally via parameterization of the mains voltage.

Continuous current measurements allow for finer process control and optimization of plant operations. With the ESS 076, manufacturers monitor power consumption in real time and use the data to adjust processes to optimize plant performance and output. Due to the advanced mounting options, existing plants can also be easily retrofitted with it.

Continuous monitoring of electricity consumption enables companies to control the energy costs better and ensure energy savings. The ESS 076 provides precise data that helps to avoid unnecessary expenditure. This is because, with its high-precision measurement technology, the ESS 076 enables real-time monitoring and provides an analysis of the power consumption of facilities to reduce operating costs sustainably. Seamless integration into existing infrastructure enables easy implementation, thereby ensuring no interruption to production in the long term. The collected electricity data from the ESS 076 can be used for decision-making and long-term planning to support investments in energy efficiency projects or capacity expansions.

The ESS 076 from STEGO is the answer to the challenges of energy efficiency, plant optimization and cost control in industrial plants. It enables companies to increase their efficiency and look to the future in an economical and environmentally friendly way.

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User friendly website with new functions.

The new STEGO Group website has been successfully relaunched. The new website offers user-friendly navigation, a modern design and a wealth of new features that make it easier for customers to satisfy their needs for information and technical data on STEGO products.

"We are proud to offer our customers and prospects a modern and user-friendly online platform that meets their needs and provides them with an easy and efficient way to get in touch with us," states Joerg Kleebaur, STEGO Sales Manager.

"We are excited to present our new website to the public. We want to meet the increased demands of our customers. Our customers want to access comprehensive information more quickly and easily," STEGO Marketing Manager Daniela Mohr elaborates. "Our goal was to create a simple and intuitive online platform that gives our customers easy access to our products and their certificates, while representing our brand promise in a modern way."

STEGO is presenting its portfolio of enclosure climate control solutions in a new format to the public with its new website. The STEGO range of products for thermal management in enclosures and technical installation spaces is presented comprehensively, comprising of enclosure heaters, filter fans, thermostats, hygrostats, sensors, LED enclosure lights, pressure compensation elements, and sockets.

The new website provides a comprehensive product library, which includes detailed product descriptions, technical specifications, data sheets, as well as CAD data (STEP) for download. Customers can also make product inquiries directly through the newly designed and optimized online forms and receive fast and reliable pricing and availability information.

The new website presents itself to potential customers with a clean and clear structure. The user experience and navigation on the site are significantly improved by the new product finder module. Website visitors can narrow down the abundance of thermal management products to a concise list of potential solutions with just a few clicks. This makes it easier and faster for customers to find and inquire about products and their specifications.

The use of features such as the thermal management calculation tool is also practical. The required heating power or cooling air volume in a switch cabinet can be easily determined using a smartphone, making it more convenient for users to obtain the necessary information.

The revamped website is also a career portal, showcasing STEGO as an attractive and reliable employer in the region. The career section addresses various job seekers, including entry-level, experienced, skilled professionals, as well as students. Numerous job openings are waiting for applicants seeking a successful career with STEGO.

The design of the website is fully responsive and optimized for mobile devices. The use of smartphones in the B2B sector is rising, particularly in foreign markets, where STEGO has become increasingly active.

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Enclosure heaters on display.

STEGO Elektrotechnik will be presenting its enclosure heater with a novel loop design at this year's SPS in Nuremberg (D).* STEGO's showcase for the return of the SPS trade fair also features an update to the KTO/KTS control cabinet thermostats and new smart sensors.

LTS064 loop-heater touch-safe

Their LPS and LTS product series give an update to its PTC-based convection heaters with capacities of between 10 and 150 W. The cooler bodies in the new loop profile design absorb the heating capacity of the PTC elements better and ensure a higher stability of the device against vibration. This means the LTS series of heaters is able to comply with the standards for mobile railway applications (DIN EN 60068-2-27:2010-02 and DIN EN 60068-2:64:2009-04). STEGO consistently uses push-in terminals for electrical contacts in the LPS and LTS series. Easily accessible on the front of the devices, the push-in terminals provide time savings of up to 50% by allowing for tool-free insertion of the cables. The terminals exert constant pressure on the supply lines, which provides added security even when transporting pre-assembled control cabinets, for example. You therefore do not need to worry about the connecting cables coming loose and resulting short circuits.

New editions of their KTO/KTS fine-tune STEGO's mechanical thermostats to better meet the needs of control cabinet construction in practice. The thermostats are designed as two-point regulators with a thermobimetal sensor element. The KTO 111 is a contact breaker (NC) for controlling heaters. The KTS 111 is a contact maker (NO) for controlling filter fans, heat exchangers, coolers and switching signal devices. Push-in terminals are used for making electrical contact. They ensure that connecting the power cables is safe, tool-free and fast. Users can expect a reduction in installation time of up to 50%. STEGO engineers have also optimized the housing design so that the thermostat now literally has more air. Larger air vents in the main unit, which tapers towards the back,

The newly developed DSS 015 Distance Smart Sensor (right) measures the distance of objects using the time of flight (ToF) of ultrasound waves. The DSS 015 Distance Smart Sensor is designed for monitoring distances or fill levels in industrial applications. The DSS 015 can even detect transparent objects such as glass, films and fluids. It is also unaffected by changing light conditions, and easy to connect to higher-level control systems (eg SPS) via its IO-Link interface.

STEGO is expanding its range of sensors for industrial applications that use IO-Link. Their SHC 071 Sensor Hub offers a cost-effective interface through which STEGO sensors can easily be connected to IO-Link installations. The SHC 071 Sensor Hub records measuring data on the process level from up to four external, non-IO-Link-capable STEGO sensors and transmits the data via the IO-Link Master to higher-level control units such as Edge computers, the cloud , SPS control etc. The Sensor Hub can be used to connect up to four external STEGO sensors while using only one port on the IO-Link Master, saving the IO-Link Master's connection capacity. The number of connected sensors and the allocation of sockets can be freely chosen by the user. Sensors from the SEN 073 series are available for the Sensor Hub. The sensors are pre-calibrated and are easy to connect to the Sensor Hub using a plug. Clustering IO-Link functionality in the Sensor Hub allows the sensors to take on a compact form factor. Sensors in the SEN 073 series can be used to record data in the following fields of application: temperature and relative humidity, temperature and absolute air pressure, visible light, illuminance and VOC.

*SPS - Nürnberg (D) November 8th-10th 2022

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Bimetal Thermostats.

Small compact thermostats KTO 111 and KTS 111 from STEGO feature a practical innovation: Push-In terminals ensure faster and tool-free connection. The small-sized regulators can be quickly connected within an enclosure or control cabinet to switch heating and cooling systems. These provide a constant climate, prevent the formation of harmful condensation, and enable trouble-free operation of sensitive electronics.

Push-In terminals for faster connection
With the new KTO / KTS thermostats, STEGO has taken the opportunity to adapt its regulators to meet the requirements of the enclosure manufacturing industry. KTO 111 and KTS 111 connect to the power supply tool-free using Push-In terminals on the front of the housing. The terminals provide constant pressure on the connection wires ensuring safety even during transportation of preassembled enclosures. It prevents wires from becoming loosened. Another advantage of the Push-In terminals is a 2/3rd reduction of installation time due to tool-free wiring.

NC and NO Contacts for optimal climate
The mechanical thermostat may appear to be small and possibly unspectacular, however only at a first glance! Thermostats are important components in every enclosure. They regulate the climatization of electronic components within the desired temperature range and thus help protect against harmful condensation. The two new thermostats are designed as two-state regulators with a sensor element made of thermostatic bimetal. The flexible bimetal bends under the influence of temperature and switches a snap-action contact. The KTO 111 is a contact breaker (NC – normally closed - the contact opens when the temperature is rising) for regulating heaters. The KTS 111 is a contact maker (NO – normally open, the contact closes when the temperature is rising) for regulating filter fans, heat exchangers, cooling appliances, or switching signal devices. So, what is the advantage of using a thermostat duo over a thermostat with change-over contact? The combination of two single thermostats (NC and NO) is more economical and allows the user to individually set the temperature ranges for heating and cooling. On the other hand, the change-over contact provides a specific changing point between heating and cooling and is a good choice when space is at a premium.

More air to “breath”
The company has put a lot of effort into the re-design of the thermostat housing. Now the thermostat has “more air to breath”. Enlarged air gaps on the rear of the thermostat housing ensure an optimized air intake and thus improved response time to temperature changes. Noticeable is also the curved, ergonomic housing design on the front with a large setting dial, which is easier to read and increases safety against unintentional adjustments: the temperature setting can only be changed with a screwdriver. STEGO´s Head of Development Peter Witsch points out the company’s special relationship to the enclosure and cabinet thermostat: “Our company co-founder and former Head of Development Hartmut Eisenhauer developed the bimetal thermostat for enclosures and control cabinets around 30 years ago. Since then, this product invention has become an established industry product. Therefore, we are committed to further extend the product benefits for customers with each re-design.”

Tried and tested in harsh environments
The operating temperature of the thermostats ranges from -45 to +80 °C (-49 to + 176 °F) in an environment with a maximum of 90 % relative humidity (non-condensing). KTO / KTS are developed for protection type IP20 and protection class 2, achieve a verified service life of 100,000 cycles, and are suitable for the following switching currents: AC 250 V, AC 120 V, and DC 24 to 72 V. The maximum inrush current is AC 16 A for 10 seconds. The switch temperature difference is 7 K with a tolerance of ±4 K. They are mounted by the clip for a DIN rail. A special feature of the new thermostats is their suitability for use in high altitudes. The thermostats can be used up to 5,000 meters (in overvoltage category II) and up to 2,000 meters (in overvoltage category III), thanks to the optimized air gap and increased creepage distance. The thermostats KTO 111 and KTS 111 have standard agency approvals, such as safety approvals by UL and VDE.

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