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KSD9700 Plastic Probe Temperature Control Switch
- KSD9700 series thermal protector is composed of dish-shaped high-sensitivity bimetal components, moving contacts, static contacts, fixed bases, shells, temperature-resistant wires and other components. The fully enclosed structure can prevent the components from being polluted by dust or impurities, preventing the penetration of paint liquid and the damage of external force.
Specification:
- Item Type: Temperature Control Switch
- Voltage & Current: 250V 5A
- Type: NO (Normally Open)
- Temperature Range: 40-100℃ (Optional)
Package List:
- 10 x Temperature Control Switch
KSD-9700 Series Thermal Protector
- When working, the bimetal element is in a free state, the moving contact and the static contact piece are closed, and the circuit is turned on. When the temperature of the electrical appliance rises to the operating temperature of the thermal protector due to the heating of the fault, the bimetal element is heated to generate internal stress and act quickly, and the moving contact is pushed away from the static contact piece to disconnect the circuit, thereby cutting off the power supply of the faulty electrical appliance. to protect electrical appliances. When the temperature of the protected electrical appliance drops to the rated reset temperature value of the thermal protector, the bimetal element returns to the initial state and the contact is closed, and the electrical appliance resumes normal operation. The product has the advantages of small resistance, fast temperature sensing, rapid action, safety and reliability, and small size.
Product Structure
- 1. Structural Features: KSD9700 series thermal protector is a bimetallic sheet with a certain geometric shape, no auxiliary mechanism is needed, only the temperature sensing of the bimetallic sheet makes the state of the bimetallic element change rapidly, and directly drives the contact to realize automatic Cut off and on the circuit, play the role of overheating and protection.
- 2. Appearance: The shell of the thermal protector should not have burrs, cracks, deformation, corrosion, etc.; the signs should be correct, correct, clear, and durable.
Application:
- Products are widely used in various household appliances and electronic products. Such as overheating protection of motors, fluorescent lamp ballasts, battery chargers, transformers, cylindrical coils, electric steam bath machines, electric water heaters, induction cookers, vacuum cleaners, electric heaters, office automation equipment, etc.
Technical Parameter:
- Rated current: AC250V/5A
- Normal electrical strength: ﹥800V
- Normal contact resistance: ﹤50mΩ
- Insulation resistance: ﹥100MΩ
- Response speed:≦1℃/min
- Life times: > 10000 times or more
- Operating temperature: 20°C -180°C (error ±3°C/ ±5°C)
- Reset temperature: 10°C- 140°C (error ≤15°C)
Temperature Characteristics Comparison Table
Temperature Detection Method:
- Connect the two leads of the sample to the fixture of the test equipment respectively, connect a current of about 10mA (not more than 100mA), use a light-emitting diode to indicate the on-off of the current, and then put the sample into the special temperature measuring equipment, (testing The temperature in the equipment should be uniform, and the heating and heating rate can be controlled) The probe of the thermometer should be close to the sample, and the temperature of the testing equipment should be controlled to increase at a rate of 0.5~1℃/min. When the light-emitting diode is on, record the reading of the thermometer, which is the action of the sample. temperature.
Other Notes:
- The product cannot withstand strong impact and pressure during use;
Service Life:
- Under the conditions of rated voltage, current and power factor of 0.7, the external heating source makes it operate 6000 times, and the following conditions should be met:
- a. The disconnection temperature change should be within +5°C of the initial value;
- b. Contact resistance should be below 100mΩ;
- c. Continue the test until 10,000 times and it can work.
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