PTC elements

Positive temperature coefficient technology


PTC elements are used as heating sources in air heaters, drying units and compartment heaters for cars and trains. PTC elements consist of PTC thermistors and aluminum strips joined by brazing or gluing. The PTC element can be mounted in a frame of heat-resistant plastic or integrated a specific application.
PTC elements offer many advantages such as quick and uniform heating and no power variation despite the presence of air flow. They have a self-regulating function and a long life-time. There is no risk of overheating. PTC technology is also used in tubular and flexible elements.


  • Compartment heaters
  • Dehumidifiers
  • Radiators, Towel dryers
  • Air heaters, Fan heaters, Hot air curtains
  • Warming plates
  • Glue guns
  • Heating systems for vehicles
  • Tumble driers, Hand dryers
  • Cabinet heaters
  • Defrosting, Evaporation of condesed water

Technical data

Type of heating

Forced convection - air heating
Direct - water and/or air heating
Contact heating


PTC thermistor: Ceramic BaTiO3
Fin: Aluminium strips
Adhesive, coating: Silikon
Frame: Heat resistant plastic
Tube: Stainless steel AISI 316L / EN 1.4404, AISI 304 / EN 1.4301


Standard range or acc. to customer specification

PTC air elements: 120x53x22mm, 120.5x70.5x22mm, 173x70.5x22mm, 122x115x20mm, 138x138x44mm

PTC water elements: Ø12x121mm, Ø12x171mm, Ø12x221mm, Other lengths: 50-300mm, acc. to customer specification


Assembly in a frame of heat-resistant plastic
In-building in the actual application
Casting in heat-resistant plastic
Customer-specific aluminum sections/profiles
Nipple on one side: G3/8”, G1/2”, G1”


Tab terminals
Cable, wiring, vulcanized connection


Standard range as well as custom made products
PTC air elements (forced convection)
PTC water elements (Immersion elements Ø12mm)
Heating chips


Switching temperature: Curie set point Min. 50°C, Max. 260°C
Voltages: 110-400 Vac, 12-36 Vdc
Safety acc. to EN 60335-1


  • Rapid heating
  • Self-regulating function
  • Heating power controlled by the air flow
  • Uniform heating without power variations
  • No risk for overheating
  • No overheating protection and regulation needed
  • Long service life
  • Can be installed in any direction
  • Compact construction
  • Large heat transferring surface
  • Energy saving

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