Type RAS

Three-phase electromechanical safety temperature limiter (STB). For temperatures up to 350 °C. The reset of the STB after action has to be done manually. The STB is self-safety, that means a capillary tube break or a leak in the sensor system will cause the contacts to open. The limiter is calibrated for an ambient temperature of 23 °C at the switching head and capillary tube.

rathgeber ce - Type RAS
rathgeber enec - Type RAS
rathgeber dve - Type RAS
rathgeber RAS 1 - Type RAS
rathgeber RAS Oben - Type RAS
rathgeber RAS Seite - Type RAS


  • Auxiliary heating for solar systems or heat pumps
  • Hot water storage
  • And other applications with the requirement for a temperature-dependent corresponding switching


  • switching cycles at nominal load up to 500
  • Certified by EN 60730-1/2-9
  • Three pole, switch off, 24…400V AC (20A)
  • Switch off temp up to 350 °C
  • Calibrated for ambient temperature 23 °C
  • Capillary tube and sensor in copper or stainless steel
  • Capillary tube length from 300 mm to 3500 mm
  • Protective tube for capillary, length by choice
  • Sensor in different diameters and profiles
  • Operation type 2.B.H.K.L approved by EN 60730-1/2-9
  • RoHS-Complaint

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