Products
Patented thermal protection
Our temperature sensors and temperature switches safeguard high-performance electric windings, lasers, circuit boards and batteries against overheating. Our portfolio covers a wide range of bimetal switches, sensors, and innovative components as well as systems for positioning and assembly. We draw on a broad base of patented products to create your thermal protection solution – available individually, pre-assembled, or as complete systems. Our experts are here to support you from initial design through to final approval.
Sensors
Maximum measuring accuracy and broad application versatility – enabled by various housing designs – characterize the temperature sensors of our product series.
SENSORS BASED ON Pt1000 / Pt100
Series S: High-precision platinum temperature elements (Pt1000/Pt100) with various insulation options – ensuring long-term stability and reliable measurement even under harsh environmental conditions.
A standardized carrier for different sensor types, combined with a modular design, enables fully automated production – ensuring consistently high product quality.
- High-precision measurement thanks to excellent linearity of the resistance curve
- Wide measuring range from -0 °C to 200 °C
- Standard-compliant resistance values according to DIN 60751
- Broad application range with multiple housing options
- High sensitivity with ultra-compact design enabled by thin-film platinum element
- Customized cable assemblies with proven connection technology
- Technical data: Datasheet Sensor Series S
SENSORS BASED ON PTC
PTC temperature sensors are ceramic semiconductor components based on barium titanate. Their compact design makes them ideal for integration into electric windings of engines and transformers. Once the nominal response temperature is exceeded, they exhibit a sudden resistance change – which can be easily detected by electronic circuits.
- Globally applicable, UL-approved across the full temperature range (UL1434)
- High sensitivity in ultra-compact design: miniature PTC with 2 mm diameter, optional 1.8 mm
- Reliable performance with cold resistance R25 < 100 Ω
- Standard-compliant characteristics according to DIN EN 60947-8 / DIN VDE V 0898-1-401
- Excellent mechanical and chemical resistance with thermally conductive protective coating
- Long-term thermal stability through optimized PTC ceramic composition
- Safe electrical separation ensured by suitable insulation design
- Cost-efficient custom versions for automated processing
- Technical data: Datasheet Sensor Series M
WIRE-FREE SENSORS: MR ROCKETS
The MR series (“rockets”) introduces you to the world of wire-free sensor technology: No more unstable, bendable parts – instead, 100% shape stability and 100% reliable connections using insulation displacement connections, press-fits, and more.
- Available with Pt1000, Pt100, NTC, or PTC
- Globally applicable, UL approval across the full temperature range (UL 1434)
- High sensitivity
- Reliable performance
- Excellent mechanical and chemical resistance with thermally conductive protective coating
- Safe insulation design ensures secure separation
Do you have any questions about our temperature sensors – or need a customized solution?
Bimetal switches
Our high-performance bimetal switches are specifically designed for use in electric windings. All series of switches respond both to the temperature of the protected component and to the self-heating of the current-carrying thermo-bimetal disk. Once the nominal switching temperature is reached, the contacts snap open instantly.
Bimetal Switches Series C
Miniaturized bimetal switches
- High pressure stability ensured by a domed steel housing, mechanically decoupled from the switching mechanism
- Thermally stable connection technology with welded leads
- Consistent dimensions through front-facing lead connections
- Easy PCB integration thanks to built-in THT and SMD connection technology, also available with Press-Fit on request
- Position-independent installation due to symmetrical design
- Reliable electromagnetic shielding provided by the ferromagnetic housing
- Stable contact resistance through optimized contact materials, high contact force, and sliding contact
- Consistently high quality standards ensured by fully automated production with integrated process monitoring
- Technical data: Datasheet Bimetal Switches Series C
Bimetal Switches Series R
Self-holding bimetal switches
- Reliable latching function ensured by an integrated PTC heating resistor. The latching is maintained by a heating element connected in parallel to the normally closed contact, preventing the contacts from closing automatically. Resetting of the temperature controller is possible by interrupting the power supply. A wide range of modification options extends the application spectrum.
- High pressure stability ensured by a domed steel housing, mechanically decoupled from the switching mechanism
- Thermally stable connection technology with welded leads
- Consistent dimensions through front-facing lead connections
- Easy PCB integration thanks to built-in THT and SMD connection technology, also available with Press-Fit on request
- Position-independent installation due to symmetrical design
- Reliable electromagnetic shielding provided by the ferromagnetic housing
- Stable contact resistance through optimized contact materials, high contact force, and sliding contact
- Consistently high quality standards ensured by fully automated production with integrated process monitoring
- Technical data: Datasheet Bimetal Switches Series R
Bimetal Switches Series F
The world’s flattest bimetal switch
- Extremely flat design (2.3 mm thickness) achieved through intelligent design and highest manufacturing precision
- Very compact construction thanks to housing-integrated lead connections
- Thermally stable connection technology with welded leads
- Consistent dimensions ensured by front-facing lead connections
- Easy PCB integration through built-in THT and SMD connection technology, also available with Press-Fit on request
- Position-independent installation enabled by symmetrical design
- Stable contact resistance through optimized contact materials, high contact force, and sliding contact
- Consistently high quality standards ensured by automated production with integrated process monitoring
- Technical Data: Datasheet Bimetal Switches Series F
Bimetal Switches Series H
Performance up to 12 A and beyond
- Over 10,000 switching cycles at 10 amperes
- New materials and contact alloys for maximum performance
- Proven dimensions, i.e. 1:1 interchangeable
- Proven connection technology
- Patented extensions (in progress)
- Available from Q4 2025
- Technical Data: Datasheet Bimetal Switches Series H
Do you have questions about our bimetal switches or need an individual solution?
Positioning Technology
Well positioned with customized positioning or Click & Play
What is the use of the best temperature sensor if it cannot be positioned efficiently inside the engine? In cooperation with our sister company BGF Enztech GmbH, we develop high-temperature resistant and thermally conductive plastic components that enable precise positioning of your temperature monitors in the engine. This ensures maximum sensor performance with minimal intervention and cost.
PI Sensor
The PI sensor allows sensors to be positioned precisely on the stator package with minimal effort. A movable, spring-loaded sleeve compensates for manufacturing tolerances and ensures consistent contact of the sensor with the winding conductors. Installation in this case is carried out with a simple turn on the fully assembled motor directly in the terminal box, which means there is no need for time-consuming embedding of the temperature monitor in the stator.
Latching aid
High-performance plastic sleeves enable precise positioning of PTC sensors. A simple “click” and everything locks securely into the desired position.
Do you have questions about our positioning technology or are you looking for a customized solution?
„CLICK & PLAY“
In cooperation with our sister company BGF Enztech GmbH (Pforzheim), we develop “Click & Play” solutions: wire-free sensors that use innovative connection technology with switching rings capable of integrating additional functions. These switching rings can be simply clicked into place in a fully automatable step. This enables significant savings in assembly costs and quality costs, particularly at higher production volumes.
SAVINGS EXAMPLE WITH “CLICK & PLAY”
- Production volume: 100,000 motors per year
- Assembly time before: 210 seconds per motor
- Assembly time after: 88 seconds per motor – assembly time reduced by 58%
- At an hourly rate of 98 EUR/hour: savings of more than 330k EUR per year, i.e. over 3.00 EUR per motor
“Click & Play” systems can be configured with:
- PTC
- Pt1000/Pt100
- NTC
- Bimetal switches
Do you have questions about our positioning technology or are you looking for a customized solution?
