Mechanical Trafag thermostats are used in applications where temperatures are controlled by means of a simple electrical on/off switching signal. These instruments operate failsafe under harsh operating conditions (e.g. extreme fluctuation of ambient temperature) and are insensitive to outside environmental conditions.

Measuring principle
The medium in a capillary tube reacts to temperature changes on the principle of heat expansion. This expansion is measured by means of a fine mechanical construction which activates one or several micro-switches.

Available versions

  • internal or external temperature adjustment
  • measuring scale inside or outside
  • with (limiter)/without resetting
  • with/without ΔT (switching differential) adjustment
  • instruments for inside or outside applications
  • optional capillary tube breaking safety device
  • One- or two-stage circuit
  • CE, EX or ship approval

  • Sensor systems/auxiliary equipment

  • fixed or freely mountable sensor
  • sensor material from copper (Cu), Cu nickel plated or stainless steel
  • brass nickel plated or stainless steel sensor protection tube
  • additional capillary tube protection

  • Trafag catalog

    Maximilian Grudin

    Product division:
    Pressure- and temperature sensors

    View contact info

    ProductMeasuring rangeSensor technologyProtection ratingOutputDocumentation
    Termostat I/IS Industat 404/414
    Termostat I/IS Industat 404/414-30 ... +40 to +70 ... +350°CCapillary tube with remote sensorIP65SwitchDatasheetManual
    Thermostat IS...R Indu Limistat 410/412
    Thermostat IS...R Indu Limistat 410/412-30 ... +40 to +70 ... +350°CCapillary tube with remote sensorIP65Limiter SwitchDatasheetManual
    Thermostat EXS Industat 404/414
    Thermostat EXS Industat 404/414-30...+40°C to +70...+350°CCapillary tube with remote sensorIP65SwitchDatasheetManual
    Thermostat EXAS Ambistat 409/419
    Thermostat EXAS Ambistat 409/419-30...+30 to 0...60°CSensor coilIP65SwitchDatasheetManual
    Thermostat ISN/ISNT Navistat 471/472
    Thermostat ISN/ISNT Navistat 471/472-10 ...+80 to +40 ... +300°Ccapillary tube, remote
    Thermostat D...R 302 – Duo Limistat
    Thermostat D...R 302 – Duo Limistat-30...+40 to +70...+350°CCapillary tube with remote sensorIP54Micro switch and Limiter SwitchDatasheetManual
    Thermostat A/AS/ASE Ambistat 645/650
    Thermostat A/AS/ASE Ambistat 645/650-45...+60°C Sensor coilIP54SwitchDatasheetManual
    Thermostat GS 657/658 Galvanostat
    Thermostat GS 657/658 Galvanostat+5...+95 to +20...+150°CSensor coilIP54SwitchDatasheetManual
    Thermostat ISP/ISPT Picotherm
    Thermostat ISP/ISPT Picotherm+5...+95 to +20...150°CCapillary tube, direct mount sensorIP65SwitchDatasheetManual
    Thermostat MP/MSP 663/664 - Pipe Mounting Thermostat
    Thermostat MP/MSP 663/664 - Pipe Mounting Thermostat-10 ...+35 till +20...+110°CPipe mounting thermostatIP54SwitchDatasheetManual
    Thermostat MST Ministat 624/634
    Thermostat MST Ministat 624/634-30...+40 to +70...+350°CRemote sensing thermostatIP54SwitchDatasheetManual
    Thermostat M/MS Ministat 624/634
    Thermostat M/MS Ministat 624/634-30 ... +40 to +70 ... +350°CCapillary tube with remote sensorIP54SwitchDatasheetManual
    Thermostat MS...R 630/632
    Thermostat MS...R 630/632-30 ... +40 to +70 ... +350°CCapillary tube with remote sensorIP54Limiter SwitchDatasheetManual
    Thermostat MSK HVAC 624/634
    Thermostat MSK HVAC 624/634-30...+40 to +20...+110°CCapillary tube with direct mounted sensorIP54SwitchDatasheetManual
    Protection tubes for direct and remote mounting
    Protection tubes for direct and remote mountingDatasheet