Thermostatic Switches

ThermThermostats are used in temperature control systems regulating air or liquids and can be used in both commercial and domestic applications. The two main types are capillary and bimetallic thermostats.
RS Components offer a range of thermostats such as enclosure thermostats, mechanical HVAC thermostats, digital and programmable HVAC thermostats, digital and smart thermostats with Wi-Fi.

What Does a Thermostat Do?
It regulates the temperature of a liquid in a tank, or in conjuction with air conditioning units to monitor the air in a room/system. The thermostat simply switches the system off or on whenever necessary so that a constant temperature can be maintained. At home room thermostats switches on the heating when the room is cold and once the temperature has reached the level set, the programmable thermostat switches the heating off.

Capillary Thermostats
These consist of a sensor, capillary tube, diaphragms, a probe and an expansion medium. When the liquid heats up and expands, the temperature sensor is heated allowing for it to be converted into displacement in the diaphragm. The contacts within the closed circuit system can be opened or closed by this displacement due to pressure.
Due to their accuracy and easy installation, they are widely used to control air and water temperatures and are suitable for use in storage heaters, hot tanks and boilers to control hot water.

Bimetallic Thermostats
These consist of a strip of two different metals with different coefficients of linear expansion. The bimetallic strip acts as an electric contact breaker in an electric heating circuit. When the desired temperature is reached, the circuit is broken.
The strips of metal are bolted together. A bridge is then created in the electrical circuit and is connected to your heating system. The strip carries electricity through the circuit when the heating is on. When the strips get hot, both of the metals expand but one more so than the other. The hottest metal bends and opens the circuit. Once the circuit is open the electricity switches off and the heating cuts out.
Once the heating is off, the room cools down which in turn cools down the strip of metal and allows it to go back to its original shape. When it cools, the metal goes back into the circuit and switches the heating back on as the electricity flow has been re-established. The metal strip takes a while to expand and contract so the heating is not constantly switching on and off every few seconds.

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Beskrivning Pris Minimum Temperature Maximum Temperature Opening Temperature Closing Temperature Thermostat Type Switch Configuration Contact Rating Contact Voltage Rating Terminal Type Mounting Type Reset Type Switch Function
RS-artikelnummer 228-2614
Tillv. art.nr2455RM 9082-472 L150
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81,70 kr
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+50°C +150°C +150°C - Bi-Metallic NC 10 A 250 V ac Solder Tab - - -
RS-artikelnummer 229-5935
Tillv. art.nr2455RP 9100-442 F35C
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0°C +186°C +20°C +35°C Bi-Metallic NO 10 A 250 V ac Solder Tab - - -
RS-artikelnummer 494-0867
Tillv. art.nr2455RC-90820388
VarumärkeHoneywell
70,84 kr
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0°C +260°C +160°C - Bi-Metallic SPST NC 15 A 120 → 250 V ac Quick Connect - - -
RS-artikelnummer 331-540
Tillv. art.nr2455R 82-713 F60C
VarumärkeHoneywell
44,86 kr
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- - +45°C +60°C Bi-Metallic NO 15 A 240 V ac Quick Connect - - -
RS-artikelnummer 228-2541
Tillv. art.nr2455RC 9082-465 L200
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74,55 kr
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0°C +260°C +200°C +160°C Bi-Metallic NC 10 A 250 V ac Solder Tab - - -
RS-artikelnummer 339-308
Tillv. art.nr2455R 82-195 L70C
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47,04 kr
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0°C +150°C +70°C +55°C Bi-Metallic SPST NC 15 A 240 V ac Quick Connect - - Open On Rise
RS-artikelnummer 228-2579
Tillv. art.nr2455RM 9082-469 L90C
VarumärkeHoneywell
81,70 kr
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+50°C +150°C +90°C - Bi-Metallic NC 10 A 250 V ac Solder Tab - - -
RS-artikelnummer 339-308A
Tillv. art.nr2455R 82-195 L70C
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30,718 kr
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0°C +150°C +70°C +55°C - SPST 15 A 240 V ac Quick Connect - - -
RS-artikelnummer 229-5840
Tillv. art.nr2455RP 9100-439 L110C
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68,97 kr
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0°C +186°C +110°C +95°C Bi-Metallic NC 10 A 250 V ac Solder Tab - - -
RS-artikelnummer 228-2557
Tillv. art.nr2455R 9082-464 F50C
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- - +50°C +82.2°C Bi-Metallic SPST-NO 10 A 250 V ac Solder Tab - - -
RS-artikelnummer 229-5884
Tillv. art.nr2455RP 9100-435 L70C
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49,55 kr
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0°C +186°C +70°C +55°C Bi-Metallic NC 10 A 250 V ac Solder Tab - - -
RS-artikelnummer 339-291
Tillv. art.nr2455R 82-196 L40C
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46,94 kr
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- - +40°C - Bi-Metallic NC 10 A 250 V ac Solder Tab - - -
RS-artikelnummer 228-2513
Tillv. art.nr2455RM 9082-468 L70C
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81,70 kr
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0°C +150°C +70°C - Bi-Metallic - 10 A - Quick Connect - - -
RS-artikelnummer 339-291A
Tillv. art.nr2455R 82-196 L40C
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- - +40°C - - NC 10 A 250 V ac Solder Tag - - -
RS-artikelnummer 229-5890
Tillv. art.nr2455RP 9100-434 L60C
VarumärkeHoneywell
55,45 kr
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0°C +186°C +60°C +45°C Bi-Metallic NC 10 A 250 V ac Solder Tab - - -
RS-artikelnummer 339-724
Tillv. art.nr2455R 82-235 L150C
VarumärkeHoneywell
46,72 kr
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- - +150°C - Bi-Metallic NC 10 A 250 V ac Solder Tab - - -
RS-artikelnummer 229-5913
Tillv. art.nr2455RP 9100-432 L30C
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56,54 kr
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0°C +186°C +30°C +20°C Bi-Metallic NC 10 A 250 V ac Solder Tab - - -
RS-artikelnummer 339-314
Tillv. art.nr2455R 82-191 L100C
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46,72 kr
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- - +100°C - Bi-Metallic NC 10 A 250 V ac Quick Connect - - -
RS-artikelnummer 339-724A
Tillv. art.nr2455R 82-235 L150C
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36,132 kr
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- - +150°C - - NC 10 A 250 V ac Solder Tag - - -
RS-artikelnummer 339-314A
Tillv. art.nr2455R 82-191 L100C
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36,132 kr
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- - +100°C - - NC 10 A 250 V ac Quick Connect - - -