Go to GlobalSpec.com Home
 

Newsletter   FREE GlobalSpec e-Newsletters
Receive the latest news, trends, and technology relevant to your work.
(See Titles)

Thermostats and Thermal Switches

Find Thermostats and Thermal Switches Manufacturers

Find Thermostats and Thermal Switches by Specification:
More Specifications >>

About Thermostats and Thermal Switches

Thermostats and thermal switches are electro-mechanical on/off switches that are activated by temperature changes. They are used to control heating and cooling systems. The sensing element is usually a spiral bimetallic strip that coils and uncoils in response to temperature changes because of the differential expansion of the two bonded metals. The switch element is either a set of electrical contacts or a glass-encapsulated mercury switch that controls a low-voltage relay. The relay can actuate a motor starter and igniter for an oil burner, a heavy-duty switch for electrical units, or a solenoid-operated valve on a gas furnace. Thermostats and thermal switches may also control residential air conditioners or industrial heat pumps. To reduce temperature swings, a small electrical heater may be energized during the warming period, causing the switch to break prematurely in anticipation of room-heater override. 

There are several basic types of thermostats and thermal switches: bi-metal disc or snap action, reed switch, magnetic reed switch, mercury switch, rod and tube with different temperature coefficients, and gas-actuated or vapor-tension. Important performance specifications to consider include maximum current rating, maximum AC voltage rating, maximum DC voltage rating, and number of life cycles that thermostats and thermal switches can withstand.   

More >>

Engineering Web: Thermostats and Thermal Switches

Pages: 1 - 3 of 223

AIRPAX™ and DIMENSIONS™ products are now part of...
thermal switch thermal breaker thermostat thermostats temperature switch switches bimetal bi-metal snap disc thermostats fuses quick-action fuses
Klixon : Texas Instruments Klixon Controls : www.Klixon.com
Klixon Image Library Circuit Breakers Pressure Switches Thermal Protector Thermostats
Thermal Switches on ThomasNet.com
Switches Thermal Printers Thermal Insulation Thermal Oxidizers Thermal Batteries Thermal Barriers Thermal Paper Thermal Spraying Thermal Incinerators
See ThomasNet Information
More >>
View Specifications
Supplier Data Sheets
Sensors, Transducers and Detectors Home