Multi-voltage capability
Due to the PTC effect and the resulting variable resistance, semiconductors are multi-voltage capable in a defined range. For example, most PTC heaters can be operated at 230 V as well as at 400 V without any significant change in power.
Dynamic power adaptation
The power output of a PTC heating element depends on the heat extraction. If a lot of heat is extracted from the semiconductor, it automatically readjusts its temperature and increases its power. As soon as it reaches its maximum temperature, the power decreases again and hardly any current flows. This dynamic power adjustment makes PTC heating elements especially energy-efficient.
Self-limiting effect
Due to the logarithmic increase of the PTC's natural resistance in relation to the temperature, the PTC limits itself. As soon as the maximum temperature is reached, the semiconductor becomes non-conductive and settles due to the physical effect. Thanks to this effect, PTCs are particularly safe and do not require any additional thermal fuse.
If you have any questions on PTC Ceramic Heater. We will give the professional answers to your questions.