Tranberg Enclosure Heater Ex with junction box and thermostat 100W to 600W - TEF 9208 Ex e, T4


Globally approved Ex e, self regulating enclosure heater. AISI 316L acid resistant steel housing and junction box. Junction box for electrical connections. Delivered with ambient air thermostat, +5°C or +15°C and power output from 100W to 600W at 0°C ambient, still air.



IECEx certificate No.: IECEx NEM 11.0005X

ATEX certificate No.: Nemko 11ATEX1098X

EAC certificate:
No TC: RU C-NO.MШ06.B.00091 Серия RU No 0007345

Technical Data

Ex-protection ATEX & IECEx:

Ta= -50°C..+50°C
Ex II 2 G
Ex e IIC T4 Gb
Ex e mb IIC T4 Gb

 Ex-protection CSA:

 AEx e mb IIC T4 Class 1 Div 2 Groups A B C and D

Ex-protection EAC:

1Ex e IIC T4 Gb X or
1Ex e mb IIC T4 Gb X

Operational ambient temp.: -50°C - +50°C
Max. withstand ambient temp:               +50°C ( Heater is energized) , +80°C ( Heater is de-energized)
Nominal voltage: 230V 50/60Hz
Material: AISI 316L / EN 1.4404
Electrical protection: Connect to max. 16A circuit breaker. Earth leakage protection device or isolation device, depend on type of system of earth according to IEC 364-3, chapter 31, and EN60079-7 Annex D.
Terminals in junction box: 4 mm². : 2+2 pcs
2,5 mm²: 2 pcs
10 mm² PE terminals: 3 pcs
Cable glands: 1 pc. TEF E204/622 M25/D2/9mm (Ø11,0-15,0mm)
1 pc. TEF 7302 M25 breather/drain plug
TEF 650 M20/M25 stopping plugs
Thermostat: 1 pc. ambient air sensing thermostat. Switching temp: +5°C or +15°C. Hysteresis: +5°C/-5°C
IP protection: For use in enclosures with IP54 or higher


  • For use inside equipment enclosures and cabinets to prevent condensation and provide climatic control.
  • Frost protection.


Low profile, easy to fit inside cabinets.

Self regulating heating element. Prevents overheating.

Rugged AISI 316L, acid steel construction.

Ambient air theromostat, integrated in heater junction box.

Low maintenance.

Part Numbers

Se datasheet for more details.