• Self-limiting characteristic
  • Random mounting position
  • Extremely flat design
  • ATEX gas and dust application approval
  • Wide rated voltage range
  • Large, black, anodized convector surface
  • Ready-to connect, maintenance-free


German English PTB 03 ATEX 1221 X
Russian GOST R POCC DE.ME92.B02495
Kazakh GOST-K-KZ4710193.01.01.00133
Kazakh GOST-K-KZ4710193.01.01.00133
English Chinese NEPSI GYJ13.1130
Byelorussian GOSPROMNADZOR 11-02-0015-2012

Ex protection type

Ex II 2G Ex d/dm IIC T4, T3
Ex II 2D Ex tD/tDmD A21 IP 65 T 135 °C bzw. T 200 °C

Ambient temperature

-50 °C up to +60 °C
Application temperature range -50 °C up to +180 °C


The extremely flat BARTEC HSF heater plates are mainly used in potentially explosive areas for applications, which require the maintenance of a specific temperature. The use of these heater plates guarantees a maximum degree of operational safety, as temperature fluctuations can be efficiently avoided and, yet, the required minimum temperatures can be maintained. The heater plates reliably protect electrical installations against function failures due to creepage currents and also offer protection against other failures caused by corrosion formation at mechanical system components. The application areas of these heaters comprise switch and control cabinets, transmitter protection boxes, measuring equipment, analyzer cabinets for sample preparation, and many more.


The PTC heating elements increase their electrical resistance as the temperatures rises. A high resistance results in a low heating output. At high temperatures, the heating capacity is reduced to a minimum heating output, which ensures that the limit temperature of the respective temperature class cannot be exceeded . Moreover, these heating elements regulate their resistance in dependence of the voltage. Therefore, the HSF heating plates can be applied in a wide supply voltage range. Should you require further information on the detailed layout of the heating capacity in holding temperature applications, please contact us.


The HSF heater plates are based on a PTC (positive temperature coefficient) heating element. The special design of the aluminum profile facilitates an even temperature distribution in the interior of housings and cabinets. For an optimum free convection, the fins should not be covered.

Technical data (extract)

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Protection classIP 68, NEMA 4X
Dimensionssee data sheet
Materialblack, anodized aluminum, resistant to sea water
InstallationMounting position: random
Weight0.9 kg bis 2.9 kg netto (see data sheet)
VoltageAC/DC 120 to 240 V
Power50, 100, 120, 200 or 300 W (at 0 ?C application temperature)
ConnectionHose line EWKF 3 x 1.5 mm?; ? 8.1 mm


Data Sheet - HSF Radiator German English French Russian 
Declaration of Conformity 21-2000-7C0001 German English French 
Operating Instructions HSF Radiator Type 27-2A..-7? up to 27-2K..-7? German English French Russian Portuguese