Stelem is one of the rare companies using its own knowledge, technology and development to offer a broad range of thermal protection with PTC sensors.
The future is the compact thermal sensor model which can be used to automatise installation processes and enable direct installation on the electronic components.
PTC sensors are temperature-responsive elements serving as safety elements for electric devices and preventing them from overheating. This is what makes them so useful when it comes to detecting temperature changes. These are sensitive machines which significantly change their resistance even with the slightest change in temperature. When the resistance of the sensor element increases sharply, the control device gives a signal for the disconnection of the supply circuit. These sensors provides rapid responses, can be used in any number of switch cycles, and are also small elements which do not take up much space in the application. One cannot overlook the low provision costs.
PTC sensors are mainly used in electrical windings for motors and transformers, but they also measure the level of fluids, etc. Temperature sensors can be manufactured as the classical wired model or as the innovative and compact edition which enables automated installation. Both concepts are manufactured in the temperature range between 60 and 210°C; we are currently also developing new generations of sensors for even higher temperatures.