Heating technology
Air conditioning
Radio systems
System technology
Building automation
Sensors
JTF-3
Frost protection thermostat, capillary length 1.8 m, external setting
For protecting hot water heating registers against freezing. The device is intrinsically safe and has a sealable setpoint adjustment.
For temperature measurement of non-aggressive gases in the duct, use the SW-200-12 thermowell, for temperature measurement in non-aggressive fluids use the TH-140 thermowell, in aggressive fluids use the NTH-140 thermowell. Mounting clamps, thermowells and protective coils are not included in the scope of delivery and must be ordered separately.
| Number of outputs | 2 |
|---|---|
| Number of control ranges | 1 |
| Output signal | switching |
| External setting | Yes |
| Rated impulse voltage | 4000 V |
| Diameter sensor element | 9.5 mm |
| Electric connection | screw terminals |
| Electronic control | No |
| With explosion protection | No |
| Colour | grey |
| Sensor element | capillary tube |
| Function type (systems engineering) | TR |
| Device version | surface-mounted unit |
| Internal setting | No |
| Contact interlocking | No |
| Bearing temperature | –10 … 55 °C |
| Length of sensor | 76 mm |
| Capillary length | 1.8 m |
| Max. air humidity (non-condensing) | 95 % r.H. |
| Sensor material | Cu |
| Housing material | plastic |
| Max. Sensor temperature | 200 °C |
| Max. switching voltage | 230 VAC, 50 Hz |
| Max. switching current | 15 (8) A |
| Medium | Air |
| Min. switching voltage | 24 VAC, 50 Hz |
| Min. switching current | 150 mA |
| Mounting/attachment | wall mounting |
| Surface finish | matt |
| Control range | -10 … 12 °C |
| Heating control function | Yes |
| Cooling control function | Yes |
| Switching differential | Heating/cooling: 1 K |
| Switching difference, can be adjusted | No |
| Switching element | microswitch |
| Switching contact | two-way contact |
| Potential free switching contact | Yes |
| Switching power | 3450 W |
| Protection class | IP40 |
| Protection class | I |
| Safety and EMC | in accordance with DIN EN 60730 |
| Scale | Degree Celsius |
| Ambient temperature | −10 … 55 °C |
| Degree of contamination | 2 |
| Dimensions (W x H x D) | 105 mm x 112 mm x 55 mm |
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