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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Omschrijving Prijs Minimum Temperature Maximum Temperature Opening Temperature Closing Temperature Thermostat Type Switch Configuration Contact Rating Contact Voltage Rating Terminal Type Hazardous Area Certification Mounting Type Reset Type Switch Function
RS-stocknr. 339-308
Fabrikantnummer2455R 82-195 L70C
FabrikantHoneywell
€ 4,47
Each
Aantal stuks
0°C +150°C +70°C +55°C Bi-Metallic SPST NC 15 A 240 V ac Quick Connect - - - Open On Rise
RS-stocknr. 339-308A
Fabrikantnummer2455R 82-195 L70C
FabrikantHoneywell
€ 3,096
Each (In a Pack of 25)
Aantal stuks
0°C +150°C +70°C +55°C - SPST 15 A 240 V ac Quick Connect - - - -
RS-stocknr. 733-4723
FabrikantRS PRO
€ 26,98
Each
Aantal stuks
0°C 90°C - - Capillary SPDT 16 A 250 V ac - - Panel Mount Automatic -
RS-stocknr. 228-2636
Fabrikantnummer2455R 9082-462 L50C
FabrikantHoneywell
€ 4,00
Each
Aantal stuks
- - +50°C - Bi-Metallic NC 10 A 250 V ac Solder Tab - - - -
RS-stocknr. 494-0873
Fabrikantnummer2455RC-90820389
FabrikantHoneywell
€ 5,47
Each
Aantal stuks
0°C +260°C +180°C - Bi-Metallic - 15 A - Quick Connect - - - -
RS-stocknr. 228-2513
Fabrikantnummer2455RM 9082-468 L70C
FabrikantHoneywell
€ 6,82
Each
Aantal stuks
0°C +150°C +70°C - Bi-Metallic - 10 A - Quick Connect - - - -
RS-stocknr. 228-2557
Fabrikantnummer2455R 9082-464 F50C
FabrikantHoneywell
€ 4,00
Each
Aantal stuks
- - +50°C +82.2°C Bi-Metallic SPST-NO 10 A 250 V ac Solder Tab - - - -
RS-stocknr. 733-4710
FabrikantRS PRO
€ 27,87
Each
Aantal stuks
0°C +120°C - - Capillary SPDT 15 A 250 V ac - - Panel Mount - -
RS-stocknr. 339-291
Fabrikantnummer2455R 82-196 L40C
FabrikantHoneywell
€ 4,06
Each
Aantal stuks
- - +40°C - Bi-Metallic NC 10 A 250 V ac Solder Tab - - - -
RS-stocknr. 339-291A
Fabrikantnummer2455R 82-196 L40C
FabrikantHoneywell
€ 3,789
Each (In a Pack of 25)
Aantal stuks
- - +40°C - - NC 10 A 250 V ac Solder Tag - - - -
RS-stocknr. 331-556A
Fabrikantnummer2455R 82-712 F75C
FabrikantHoneywell
€ 3,008
Each (In a Pack of 25)
Aantal stuks
- - +60°C +75°C - NO 15 A 240 V ac Quick Connect - - - -
RS-stocknr. 331-556
Fabrikantnummer2455R 82-712 F75C
FabrikantHoneywell
€ 4,09
Each
Aantal stuks
- - +60°C +75°C Bi-Metallic NO 15 A 240 V ac Quick Connect - - - -
RS-stocknr. 339-314
Fabrikantnummer2455R 82-191 L100C
FabrikantHoneywell
€ 4,50
Each
Aantal stuks
- - +100°C - Bi-Metallic NC 10 A 250 V ac Quick Connect - - - -
RS-stocknr. 331-534A
Fabrikantnummer2455R 82-715 L120C
FabrikantHoneywell
€ 3,312
Each (In a Pack of 25)
Aantal stuks
0°C +150°C +120°C +105°C - SPST 15 A 120 to 250 V ac Quick Connect - - - -
RS-stocknr. 339-314A
Fabrikantnummer2455R 82-191 L100C
FabrikantHoneywell
€ 3,641
Each (In a Pack of 25)
Aantal stuks
- - +100°C - - NC 10 A 250 V ac Quick Connect - - - -
RS-stocknr. 331-534
Fabrikantnummer2455R 82-715 L120C
FabrikantHoneywell
€ 4,47
Each
Aantal stuks
0°C +150°C +120°C +105°C Bi-Metallic NC 15 A 120 → 250 V ac Quick Connect - - - -
RS-stocknr. 229-5935
Fabrikantnummer2455RP 9100-442 F35C
FabrikantHoneywell
€ 3,21
Each
Aantal stuks
0°C +186°C +20°C +35°C Bi-Metallic NO 10 A 250 V ac Solder Tab - - - -
RS-stocknr. 229-5907
Fabrikantnummer2455RP 9100-433 L50C
FabrikantHoneywell
€ 3,40
Each
Aantal stuks
0°C +186°C +50°C +35°C Bi-Metallic NC 10 A 250 V ac Solder Tab - - - -
RS-stocknr. 331-528A
Fabrikantnummer2455R 82-716 L90C
FabrikantHoneywell
€ 3,096
Each (In a Pack of 25)
Aantal stuks
0°C +150°C +90°C +75°C - SPST NC 10 → 15 A 240 V ac Quick Connect - - - -
RS-stocknr. 331-528
Fabrikantnummer2455R 82-716 L90C
FabrikantHoneywell
€ 4,47
Each
Aantal stuks
0°C +150°C +90°C +75°C Bi-Metallic SPST NC 10 → 15 A 240 V ac Quick Connect - - - -
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