Bimetal switches are safety products. Therefore, detailed advice is the cornerstone for successful use in your application. There are very different facts to consider. We are happy to help you with all questions relating to thermal protection in your application. As a rule, we ask about the following topics: the exact task of the switch, current and voltage, fastening and heat transfer, environmental influences
You can order the switches directly from us. Due to the fact that these are safetyrelevant products, some of which require explanation in terms of handling and use, we do not operate an online shop. Call us at 07235-980200 or send an email to
Bimetal switches are generally referred to as Klixxon. The origin comes from the American company Texas Instruments which called their TXE series „Klixxon“. The term has been adopted into common parlance over time and has also established itself among other manufacturers.
We deliver and supply small and medium-sized quantities in batches from 1 piece to 20,000 pieces
We have many series in different configurations in stock and can usually manufacture customer-specific switches at very short notice. Sometimes, however, special components are also necessary. Then you have to inquire about our current delivery times.
In the case of safety-relevant applications, tests under worst-case conditions are absolutely necessary in order to really get a reliable solution. We therefore always recommend a test with functional models!
Since a circuit is closed or interrupted directly with the bimetal switches, moisture plays a central role. Basic switches normally have no moisture protection and it is important to ensure that no moisture gets on the switch or the switching contacts during use. However, there are special series that offer temporary protection against moisture (e.g. dew or condensation). This is documented in IP protection classes or based on IP protection classes. However, special immersion sleeves must be used for permanent use in or under water.
The 43X series is suitable for 480VAC.
Most switches are approved and certified for 230VAC.
There are switches such as the 03EC series that are specially certified for DC voltages up to 48VDC.
We have explained the structure in detail in the configuration card for the different series.
Most switches have retaining clips or screw-on brackets to screw them directly to a surface. There are also switches with threaded bolts for screwing in or pipe clips for mounting directly on pipes up to 7/8 inch in size.
Basically, the switches can be integrated into the circuit using a plug or a stranded wire. But our strength also lies in the fact that we assemble the switches according to your wishes. We also supply complete cable harnesses with switches or fuses.
Bimetal switches are tested and certified for switching cycles. A shelf life over a pure period of time cannot be defined, as this depends very much on the ambient and operating conditions.
When a predefined ambient temperature is reached, two metals firmly connected to one another cause this pane to suddenly jump over. The resulting force is used to suddenly separate or close an electrical contact.
Two metals connected to one another, which have different thermal expansion. Due to this difference in expansion, a bimetal strip bends or a bimetal disc cracks when the limit temperature of a material is reached.