Electronic Ex-Temperature Limiter type ETBA 1 Ex-ib  series 1055

short description

for temperature limiting of equipment which is used in flame proof areas



Electronic Temperature Limiter ETBA 1 Ex-ib to limit temperatures of devices in flame proof areas.

The limiter measures the temperature at the HOT SPOT by means of PT100 sensor and supervises this procedure of -4… 460°C as self-sufficient system.

Whenever the measured temperature is higher than the adjusted switching temperature, the main circuit will be opened and locked. Unlock is possible with the unlock switch at the Temperature Limiter ETBA or remote controlled,

After a failure of supply voltage the ETBA switches into the same condition as before the supply voltage failure.


    Marking : II (2) G [Ex ib] IIC                                                                                                                                     EC-Type Examination Certificate :                            TÜV 08 ATEX 554381

     Flame proof according to                                        ATEX Directive 94/9/EC, EN 60079-0, EN 60079-11  intrinsic safety       

Technical Data

 Supply voltage 24V...265V/ AC 50/60 Hz / DC                    

 Power consumption             ca. 3,0VA

 Protection to 60529               IP 20

 Relais out limiter                    1n.c. 6 A, 250 V / AC                                                                    or 5 A, 24 V / DC

 Ambient temperature             -20...+ 50°C                                                                                                                              Indicate range                         actual value -99...460°C                                                              set point        - 4 ...460°C


  • connectiont to resistance temperature sensor Pt100 DIN in 3- or 2-wire configuration
  • sensor control
  • adjustment of switchpoint with tool only (screwdriver)
  • position of relais contacts shown by LED
  • temperature sensor shortage or breakage shown by 7-segment LED display
  • unlock at device or remote
  • no unlock necessary after breakdown of power supply     

complete Wiring and Operating Instructions       PDF file