Heaters
Control cabinet heaters
PTC control cabinet heating – an efficient and safe solution for your control cabinet
Frost and moisture can significantly impair the functionality of electrical components. A PTC control cabinet heater reliably protects your electronics from these influences. Thanks to modern PTC (Positive Temperature Coefficient) technology, these heaters are characterized by high safety and energy efficiency. Unlike conventional resistance heaters, PTC heaters regulate themselves: as the temperature rises, the resistance of the heating element increases, automatically reducing power consumption. This prevents overheating and increases operational safety.
Advantages and disadvantages of PTC control cabinet heaters
Advantages:
- Self-regulating heating element: Automatic adjustment of power to the ambient temperature – additional switching elements for temperature limitation are unnecessary.
- High safety: Self-regulation minimizes the risk of overheating and fires.
- Fast heating: Small PTC control cabinet heaters quickly reach their operating temperature.
Disadvantages:
- High inrush current: Temporary increase in power consumption, which must be taken into account when selecting fuses.
PTC control cabinet heating vs. resistance heating
| Feature | PTC control cabinet heating | Resistance heating |
| Self-regulation | Yes, but controller recommended | No, but integrated thermostat |
| Energy efficiency | High | Lower |
| Safety | Very high (overheating protection) | Lower |
| Start-up current | High (short-term) | Lower |
Product selection and specifications
Our range includes compact PTC control cabinet heaters with outputs from 10 W to 240 W, which are ideal for various applications. The P70 series heaters are powerful solutions for heating air in enclosed electrical enclosures. Thanks to the chimney effect, the heater achieves up to 240 W of power without a fan.
Technical highlights:
- Thermal decoupling: Safe mounting on the top-hat rail.
- Easy installation: DIN clip and pressure terminals enable quick integration.
- Multi-voltage capable: Operation at 110–240 V AC/DC.
- Touch protection: Optional protection against high surface temperatures, easy to retrofit.
Whether as a heater for small enclosures or as a powerful solution for large control cabinets: With PTC control cabinet heaters from Lm-therm, you can rely on safety and efficiency.
Showing all 11 results
