10PCS KSD9700 Metal Thermistor Temperature Control Switch 5A for 12V/24V DC Voltage Range and High Precision Temperature Control

10PCS KSD9700 Metal Thermistor Temperature Control Switch 5A for 12V/24V DC Voltage Range and High Precision Temperature Control

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KSD9700 series thermal protector is composed of disc-shaped highly sensitive bimetal element, moving contact, static contact, fixed base, housing, temperature resistant
conductors and other components. The fully enclosed structure protects the element from contamination by dust or impurities and prevents penetration of paint and damage by external forces.
When working, the bimetallic element is in a free state, the movable contact and static contact are closed, and the circuit is conducted. When the use of electrical appliances due to fault heating and
When the temperature rises to the action temperature of the thermal protector, the bimetal element is heated to produce internal stress and act quickly, pushing the moving contact away from the static
The circuit is broken by pushing the movable contacts away from the static contacts, thus cutting off the power supply of the faulty appliance to protect the appliance. When the temperature of the protected appliance drops to the rated reset temperature of the thermal protector, the bimetallic element will act quickly to push open the movable contact and break the circuit.
When the temperature of the protected appliance drops to the rated reset temperature value, the bimetal element returns to the initial state contact closure and the appliance resumes normal operation. The product has a small resistance, fast The product has the advantages of small resistance, fast temperature sensing, rapid action, safety and reliability, small size, etc.Product :
1,Size: 20*7.4*3.8mm, line length 7cm
2, Electrical : 10A250V/12V/24V (AC, DC universal)
3,Material: Ceramic shell
4. Service life:6000 cycles;
5, Contact resistance: 100MΩ ,
7, Forms, NC type: rising temperatures, contacts disconnected, manual reset, NO type: rising temperatures, contacts through manual reset;
8, Grotection grade: IP00;
 
How to distinguish the normally open and normally closed type:
If the appliance can be started directly, and the thermostat is connected to the main line, then the thermostat is usually normally closed!
1. Define the Terms:
Normally Open (NO): This type of thermostat does not allow electrical current to flow through it when it is in its normal state, at room temperature. The circuit only closes (allowing current to flow) when the temperature reaches a certain level.
Normally Closed (NC): This type of thermostat allows electrical current to flow through it when it is in its normal state, at room temperature. The circuit opens (stopping the current) when the temperature reaches a certain level.
2. Use an Analogy:
Consider comparing it to a door:
A NO thermostat is like a door that is usually open but closes when necessary (for instance, when the temperature gets too high).
An NC thermostat is like a door that is usually closed but opens when necessary (for instance, when the temperature gets too high).
3. Explain the Applications:
NO thermostats are typically used in cooling systems. When the temperature rises above the desired threshold, the circuit closes to activate a fan or cooling device.
NC thermostats are commonly used in heating systems. The circuit is normally closed, allowing current to flow to a heater. When the temperature reaches the desired threshold, the circuit opens to deactivate the heater.
Here's how you can explain the use of Normally Open (NO) and Normally Closed (NC) thermostats in different household appliances:
Normally Open (NO) Thermostats:
Refrigerators and Freezers: When the temperature rises above a set point, the thermostat closes to activate the refrigeration system, which cools down the interior.
Air Conditioners: When the indoor temperature rises, the thermostat closes, triggering the air conditioner to start cooling.
Electric Fans: The thermostat closes to turn on the fan when the temperature reaches a certain level.
Normally Closed (NC) Thermostats:
Electric Water Heaters: The thermostat closes to heat the water when the water temperature falls below a set point. It opens to stop heating when the desired temperature is reached.
Heating Appliances: In cold environments, the thermostat closes to activate heating devices when the temperature falls below a certain level.
Ovens: The thermostat closes to turn on heating elements when the internal temperature is below the desired level, and opens to stop heating when the set temperature is achieved.
Note:
These examples are not absolute, as different manufacturers and different models of appliances may use various types of thermostats. Additionally, some appliances may use both NO and NC thermostats for more complex control. When purchasing or repairing household appliances, it is advisable to refer to the specific device's manual or consult the manufacturer for accurate information.Installation attention to show items:
1, installation can not make the shell deformation or collapse!
2, the product is not suitable for air temperature sensing, only for contact temperature sensing! (Available tie wire, iron wire, fixed seat or 704 silicone rubber for fixed)
3, the metal shell case with electricity, the installation needs to be insulated, not suitable for work in water. Plastic and ceramic shell into the water when working can not be submerged in the insulation seal rubber.
4,When the product is installed, the temperature control switch should be close to the installation surface of the controlled apparatus. To avoid inaccurate temperature sensing
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