Switches of the F series with a minimum size are very suitable for the installation in confined conditions. The switching principle consists of a central contact which opens or closes the circuit of the application when there is a temperature input by means of a pressure spring, and a thermo-bimetal snap-disc.

Due to the low mass, a very fast response of the switch is possible. The heat is thereby preferably absorbed by the round contact surface of the switch, and transmitted to the bimetallic element.

In addition to the direct protection of smaller electrical drives and devices with a rated power of up to approx. 750W, F series switches are often used as thermal sensors. In twin or triple configurations, they provide a triggering element in the control circuit for contactors, thus also able to thermally protect larger three-phase Motors.

Type series B switches have a thermo-bimetallic snap-disc with a fixed switching temperature as the switching element.

In the case of an external temperature input, the double contact system of the switch and thus the circuit of the application is opened or closed. The heat transfer is performed from all sides onto the housing of the switch by means of convection or direct heat conduction.

B12 switches are universally applicable through their design, their wide range of performance and their diverse range of designs: as a protective switch, sensor, controller.

Sensors of the STS type series are characterized by a temperature curve which is very similar to the (already partially terminated) KTY sensors, and offer an alternative solution.

The STS1 is an alternative to KTY84-130, and is standardly available in the shrink-tube or dimensionally stable PPS housing package.

When handling the STS, there is no need to pay attention to a polarity reversal. Therefore, both strand cables are made in white by standard. These components are insensitive towards ESD.

The PT1000 is a temperature sensitive resistor.

The resistance increases with rising temperature which means it has a positive temperature coefficient. The nearly linear characteristic makes it a precise and high performance choice suitable for use in measurements and Control systems.

Temperature sensors of the YAM / EF1 type series are the PTC thermistor or the motor PTC, which are characterized by a sudden increase in resistance at a def. response temperature.

The special field of ​​these sensors lies in the area of ​​the heavy load motors (3-phase, 1-phase), in which no direct disconnection due to the high current is possible. The motor PTC is used as a sensor and, like a temperature switch, emits a very high resistance level from a certain response temperature level. Through this, for example, it is possible to switch a fuse by means of an evaluation unit.