Radiator HSF



  • 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


Ex II 2G Ex db IIC T4, T3
Ex II 2D Ex tb IIIC T135 °C/ T200 °C

Ambient temperature

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


PTB 03 ATEX 1221 X
IECEx PTB 14.0019X
TC RU C-DE.GB06.B.00327
NEPSI GYJ13.1130


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 *

Protection class IP 68, NEMA 4X
Dimensions see data sheet
Material black, anodized aluminum, resistant to sea water
Installation Mounting position: random
Weight 0.9 kg bis 2.9 kg netto (see data sheet)
Voltage AC/DC 120 to 240 V
Power 50, 100, 120, 200 or 300 W (at 0 °C application temperature)
Connection Hose line EWKF 3 x 1.5 mm²; Ø 8.1 mm

*Refer to the documentation for more detailed information


Data Sheet - Radiator HSF

Declaration of Conformity 21-2000-7C0001

Operating Instructions HSF Radiator Type 27-2A..-7… up to 27-2K..-7…