Description
RTKSA-204.020
Frost thermostat, 1.8 m capillary, IP65, hysteresis 1.5K, STW, internal setting, external reset | RTKSA-204.020
The RTKSA frost protection controllers are specially developed for air-side or water-side frost protection of heating coils and heat exchangers in ventilation, heating or air conditioning systems. If the Sensor breaks, contact 1 – 2 is permanently open and contact 1 – 4 is permanently closed.
Note
Mounting brackets, immersion sleeves and protection coils are not included in the delivery and must be ordered separately. Air-side application: The SWK-2-xxx protection coils can be used to measure the temperature of non-aggressive gases in the duct. Water-side application: For temperature measurement in non-aggressive liquids, the immersion sleeves THK-2-xxx can be used, and in aggressive liquids, the immersion sleeves NTHK-2-xxx can be used.
Available in 2 variants RTKSA
– Safety temperature limiter (internal setting with reset)
– Safety temperature monitor (internal setting)
Accurate room temperature measurement
Various Sensor lengths available (800 mm – 12000 mm)
Degree of protection: IP 40 and IP 65
Technical data RTKSA-204.020
Operating voltage: none
Sensor element Diameter: 9.5 mm
Electrical connection: plug-in terminal
Color: anthracite gray (RAL7016), transparent front
Internal setting: yes
Sensor element length: 98 mm
Capillary length: 1.8 m
Sensor material: Cu
Max. probe temperature: 120°C
Switching voltage: 24 VAC / 50 Hz, 24 VDC…230 VAC 50 / 60 Hz, 230 VDC
Switching current: normally closed 16 (2.5) A; normally open 6.3 (2.5) A, 0.25 Adc
Mounting / Fixing: wall mounting
Control range: -10°C…15°C
Switching difference: 1.5 K
Switching contact: changeover contact
Potential-free switching contact: yes
Degree of protection: IP65
Protection class: I
Ambient temperature: Max. 80°C
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