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Frost protection thermostat, 12m, IP40, hysteresis +3K, STB, internal setting, external resetting

Frost protection thermostat, 12m, IP40, 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 (40 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.
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  • Art.-Nr.: KA020305

    Technical data

    number of outputs2
    number of control ranges1
    output signalswitching
    external settingNo
    external resetYes
    operationinternal setpoint adjuster, reset button
    operating voltagenone
    electric connectionpush-in terminal
    electronic controlNo
    with explosion protectionNo
    colouranthr. grau (RAL7016), Fronts. transp.
    sensor elementcapillary tube
    function type (systems engineering)STB
    device versionsurface-mounted unit
    internal settingYes
    contact interlockingYes
    bearing temperature, upper value80°C
    bearing temperature, lower value-30°C
    Capillary length12m
    maximum air humidity (non-condensing)95% r.H
    Sensor materialCu
    max. sensor temperature120°C
    maximum switching voltage230 V AC 50 / 60 Hz, 230 V DC
    maximum switching currentNC: 16 (2.5) A; NO: 2 (0,4) A, 0,25 ADC
    minimum switching voltage24 V AC / 50 Hz, 24 V DC
    minimum switching currentat 24 V (AC/DC) min. 100 mA
    mounting / attachmentwall mounting
    control range, upper value15°C
    control range, lower value-10°C
    heating control functionYes
    cooling control functionYes
    switching differencemanual reset after +3K
    switching difference, can be adjustedNo
    switching elementmicroswitch
    switching contacttwo-way contact
    potential free switching contactYes
    type of protectionIP40
    protection classI
    Safety and EMCin accordance with DIN EN 60730
    scaleGrad Celsius
    ambient temperature, upper value80°C
    Circuit diagram Circuit diagram


    Info sheet


    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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