Heating technology
Air conditioning
Radio systems
System technology
Building automation
Sensors
RTKSA-204.020
Frost protection thermostat, 1.8 m, IP65, hysteresis 1.5 K, STW, indoor setting, outdoor reset
The RTKSA frost protection controllers have been specially developed for air or water-side frost protection of hot water heating registers and heat exchangers in ventilation, heating or air conditioning systems. In the event of a sensor break, contact 1-2 is permanently opened and contact 1-4 is permanently closed. Note: Mounting clips, thermowells and protective coils are not included in the scope of delivery and must be ordered separately. Air-side application: The SWK-2-xxx protective coils can be used for temperature measurement of non-aggressive gases in the duct. Water-side application: THK-2-xxx thermowells can be used for temperature measurement in non-aggressive fluids and NTHK-2-xxx thermowells can be used in aggressive fluids.
| Number of outputs | 2, 2 |
|---|---|
| Number of control ranges | 1 |
| Output signal | switching |
| External setting | No |
| Operation | internal setpoint adjuster |
| Diameter sensor element | 9.5 mm |
| Electric connection | Push-in clamp |
| Electronic control | No |
| With explosion protection | No |
| Colour | anthracite |
| Sensor element | capillary tube |
| Function type (systems engineering) | STW, STW |
| Device version | surface-mounted unit |
| Internal setting | Yes |
| Contact interlocking | No |
| Bearing temperature | –30 … 80 °C |
| Length of sensor | 98 mm |
| Capillary length | 1.8 m |
| Max. air humidity (non-condensing) | 95 % r.H. |
| Sensor material | Cu |
| Max. Sensor temperature | 120 °C |
| Max. switching voltage | 230 VAC, 50/60 Hz / 230 VDC |
| Max. switching current | 16 (2,5) A, 0,25 A |
| Min. switching voltage | 24 VAC, 50 Hz / 24 VDC |
| Min. switching current | at 24 V (AC/DC) min. 100 mA |
| Mounting/attachment | wall mounting |
| Control range | -10 … 15 °C, -10 … 15 °C |
| Heating control function | |
| Cooling control function | |
| Switching differential | Heating/cooling: 1,5 K |
| Switching difference, can be adjusted | No |
| Switching element | microswitch |
| Switching contact | two-way contact |
| Potential free switching contact | Yes |
| Protection class | IP65, IP65 |
| Protection class | I |
| Safety and EMC | in accordance with DIN EN 60730 |
| Scale | Degree Celsius |
| Dimensions (W x H x D) | 57,6 mm x 146,8 mm x 53 mm |
Loading specification text...
| Photo | Type | Art. no. | Features | |
|---|---|---|---|---|
 | SWK-2-100 | KA989901 | Protective coil, 100 mm, nickel-plated steel, inner x outer diameter 10.5 x 17 mm | View product |
| SWK-2-200 | KA989903 | Protective coil, 200 mm, nickel-plated steel, inner x outer diameter 10.5 x 17 mm | View product |
 | TH-140 | C1809409 | Thermowell, 140 mm, nickel-plated brass, diameter inside x outside 10 x 12 mm | View product |
| NTH-140 | C1809435 | Thermowell, 140 mm, V4A (1.4571), diameter inside x outside 10 x 12 mm | View product |
 | JZ-33 | KA999904 | Sealing set for universal capillary thermostats RTKSA-xxx.xxx | View product |
 | JZ-29 | KA999901 | Mounting set RTKSA THK/NTHK/SWK Single controller | View product |