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Frost protection thermostat, 3m, IP65, hysteresis +3K, STB, internal setting, external resetting


Frost protection thermostat, 3m, IP65, hysteresis +3K, STB, internal setting, external resetting

The RTKSA frost protection controllers were specially developed for air or water-side frost protection of hot water heater registers and heat exchangers in ventilation, heating or air conditioning systems. The capillaries are active along their entire length. The device responds when the minimum response length of the capillary (15 cm) reaches the set scale value. In the event of a sensor break, contact 1 – 2 is permanently open and contact 1 – 4 is permanently closed. Unlocking is no longer possible. Note: Mounting brackets, immersion sleeves and protective coils are not included in the scope of delivery and must be ordered separately. Air-side application: For the frost protection of heating registers, the capillary is clamped in front of the heating register to be protected with mounting clamps. For this, the mounting clamps JZ-05 / 6 M (metal) or JZ-05 / 6 K (plastic) are to be used.
  • Art.-Nr.: KA020302

    Technical data

    Ambient temperature, upper value80 °C
    Bearing temperature, lower value-30 °C
    Bearing temperature, upper value80 °C
    Capillary length3 m
    ColourAnthr. grey (RAL7016), frontp. transp.
    Contact interlockingYes
    Control range, lower value-10 °C
    Control range, upper value15 °C
    Cooling control functionYes
    Depth57,5 mm
    Device versionSurface-mounted unit
    Electric connectionPush-in terminal
    Electronic controlNo
    External resetYes
    External settingNo
    Function type (systems engineering)STB
    Heating control functionYes
    Height146,8 mm
    Internal settingYes
    Max. sensor temperature120 °C
    Maximum air humidity (non-condensing)95 % r.H
    Maximum switching currentO: 16 (2,5) A; S: 2 (0,4) A, 0,25 ADC
    Maximum switching voltage230 V AC 50 / 60 Hz, 230 V DC
    Minimum switching currentAt 24 V (AC/DC) min. 100 mA
    Minimum switching voltage24 V AC / 50 Hz, 24 V DC
    Mounting / attachmentWall mounting
    Number of control ranges1
    Number of outputs2
    Operating voltageNone
    OperationInternal setpoint adjuster, reset button
    Output signalSwitching
    Potential free switching contactYes
    Protection classI
    Safety and EMCIn accordance with DIN EN 60730
    ScaleDegree Celsius
    Sensor elementCapillary tube
    Sensor materialCu
    Switching contactTwo-way contact
    Switching differenceManual reset after +3K
    Switching difference, can be adjustedNo
    Switching elementMicroswitch
    Type of protectionIP65
    Width53 mm
    With explosion protectionNo
    Circuit diagram Circuit diagram


    Info sheet

    Assembly instructions


    JZ-05/1MC1809462Individual mounting bracket (metal) for frost protection thermostat JTF / RTKSAAccessories
    JZ-05/6KC1809536Mounting brackets (plastic) for frost protection thermostat JTF / RTKSA, 6 pcs.Accessories
    JZ-05/6MC1809474Mounting brackets (metal) for frost protection thermostat JTF/RTKSA, 6 pcs.Accessories
    JZ-33KA999904Sealing set for universal capillary thermostats RTKSA-xxx.xxxAccessories

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