What is The temperature limiter – how it works? | Haichuan
Advantages of a system with a continuously movable bimetal disc:
Increased work capacity
Greater contact stability/contact pressure
More efficient use of space thanks to the circular design (miniaturisation)
Simple geometry: capable of bearing more mechanical stress
Cost-effective production (simple tools)
Longer service life
Better long-term stability
Lower contact resistances
More precise switching point accuracy
No premature switching
Very precise switching point response to ambient temperature only
What is a thermal protector / temperature limiter?
As a safety device, the temperature limiter is installed in the motors, heaters and transformers of popular
household appliances. They are commonly referred to as temperature controllers, temperature monitors,
or safety temperature limiters.
Normally closed (NC) and normally open (no) thermal protectors are distinguished. Traditional protection devices
usually have NC thermal protectors, but without thermal protectors, it is more suitable to ensure the safe, reliable
and uninterrupted operation of the device.
Thermal circuit breakers are commonly used in motors, transformers, heating equipment and traditional household
equipment such as mixers and kettles.
HCET focuses on the development and production of bimetal thermal protectors. However, our product line also includes
PTC motor protection sensors and resistors as well as customized PTC heating elements. Hcet products are mainly used for
special applications in the household equipment industry and the automotive industry. They prevent overheating of
components and terminal equipment due to excessive stress.
Many people are very familiar with the temperature controller. The function of the temperature controller is very powerful.
It can help us control the temperature. It is widely used in many places. However, many people do not understand the
working principle of the temperature controller. Here is an introduction to let you have a deeper understanding of the
working principle of the temperature controller.
How it works?
The temperature controller is an automatic adjustment device based on the principle of thermal expansion and cold
contraction of temperature sensing liquid and incompressibility of liquid, which can make the temperature in the box
change within the specified range. When the control temperature rises or falls, the temperature sensing liquid can
correspondingly expand or contract to turn down or start the heat medium, so as to achieve the rise and fall of temperature.
The ambient temperature is automatically sampled and monitored by the temperature sensor. When the ambient temperature
of the thermostat is higher than the control set value, the control circuit starts, and the control return difference can be set.
The relay contact is terminated with the cooling fan of the chassis, and a temperature value such as 28 ° C is set. When the
temperature in the chassis exceeds 28 ° C, the control terminal is at low level, the relay is closed, and the fan is started for cooling.
It is most necessary for office workers' families to automatically switch and adjust the wall mounted furnace in advance or later
every day without manual operation; The room temperature is automatically adjusted in the morning, afternoon and evening
every day to avoid the embarrassment of getting up in the morning and waiting for the room to warm up after work;
Change the backward and extensive water temperature control to the advanced and accurate room temperature control.
In addition, it operates at the specified room temperature in different periods of time and on demand, without open day
and night gas heating; When the room temperature is too low, the wall mounted boiler is forced to start, and only a little
gas is required to safely protect the room from freezing.
The working principle of the temperature controller thermal protector switch is not complicated. I believe that after the
introduction, we have a more comprehensive understanding of how the temperature controller works. Although the temperature
controller is small, it is also essential. With the temperature controller, we can automatically adjust the temperature, eliminating
the trouble of manual operation. It is very convenient and indispensable in many places.
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