Skip to main content

Frost protection thermostat, capillary length 6m, internal setting, 2-stage

JTF-21 W

Frost protection thermostat, capillary length 6m, internal setting, 2-stage

For measuring the temperature of non-aggressive gases. The JTF-21 frost protection monitor has 2 switching outputs, which makes it possible to override the system before the danger point is reached. When fixing the capillary tube, mounting brackets JZ-05 / 6 M (metal) or JZ-05 / 6 K (plastic) should be used upstream of the heating coil. The capillary tube is active along its entire length. The device reacts when approx. 30 cm of the capillary tube reaches the adjusted scale value. Mounting brackets, immersion sleeves and protective coils are not included in the delivery and must be ordered separately. Hysteresis between the stages approx. 5 K.
  • Art.-Nr.: E6090283

    Technical data

    Ambient temperature, lower value-10 °C
    Ambient temperature, upper value55 °C
    Bearing temperature, lower value-10 °C
    Bearing temperature, upper value55 °C
    Capillary length6 m
    Contact interlockingNo
    Control range, lower value-10 °C
    Control range, upper value12 °C
    Cooling control functionYes
    Degree of contamination2
    Depth75 mm
    Device versionSurface-mounted unit
    Electric connectionScrew terminals
    Electronic controlNo
    External settingNo
    Function type (systems engineering)TW
    Heating control functionYes
    Height200 mm
    Housing materialPlastic
    Internal settingYes
    Max. sensor temperature200 °C
    Maximum air humidity (non-condensing)95 % r.H
    Maximum switching current15 (8) A
    Maximum switching voltage230 V AC, 50 Hz
    MediumAir, not aggressive
    Minimum switching current150 mA
    Minimum switching voltage24 V AC / 50 Hz
    Mounting / attachmentWall mounting
    Number of control ranges1
    Number of outputs4
    Operating voltageNone
    Output signalSwitching
    Potential free switching contactYes
    Protection classI
    Rated impulse voltage4000 V
    Safety and EMCIn accordance with DIN EN 60730
    ScaleDegree Celsius
    Sensor elementCapillary tube
    Sensor materialCu
    Surface propertiesMatt
    Switching contact2 two-way contacts
    Switching differenceApprox. 1 K
    Switching difference, can be adjustedNo
    Switching elementMicroswitch
    Switching power3450 W
    Type of protectionIP65
    Width120 mm
    With explosion protectionNo
    Circuit diagram Circuit diagram




    JZ-07E6160145Mounting bracket for frost protection thermostat JTFAccessories
    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-04E6160133Capillary tube duct for JTF frost protection thermostats and JMT/WR/JET capillary controllersAccessories
    JZ-05/6MC1809474Mounting brackets (metal) for frost protection thermostat JTF/RTKSA, 6 pcs.Accessories

    Contact request


    Do you have questions or are you interested in our products?

    Please contact the electrician you trust or write us a message.

    Close Menu