KSD301 temperature relay is a kind of temperature control switch with bimetal as temperature sensing component. When the appliance is working normally, the bimetal is in free state, the contact is in the closed/open state, when the temperature reaches the operating temperature, the bimetal The internal stress caused by heat generates rapid action, opens/closes the contact, and cuts/closes the circuit, thereby controlling the temperature. When the appliance cools to the reset temperature, the contacts automatically close/open and return to normal operation. This is the working principle of the KSD301 temperature relay. Let's take a look at the technical parameters of the KSD301 temperature relay .
Ksd301 temperature relay technical parametersThe bimetal contact temperature sensitive snap-type thermostat is automatically reset and manually reset to meet the needs of different users, and the working mode is movable and combined. The connection terminal width is 6.3mm, 4.8mm flat foot, 45°C bending foot, 90°C bending foot, etc.
(1) Disinfection cabinet,
(2) Heater,
(3) microwave oven,
(4) Electric kettle,
(5) bread machine,
(6) Electric coffee maker
(7) Office equipment
(8) bread machine
(9) drinking fountain
(10) Car seat heaters, car engines, electric steamers, refrigerators, air conditioners, and other small household appliances.
two. Principle of actionThe KSD301 thermostat is a kind of heat-sensitive reaction component after the constant temperature, and the heat generated when the temperature of the main part of the product is increased is transferred to the bimetal disc, and the action is quickly set when the operating temperature is set. The function is to open or close the contact; when the temperature drops to the reset temperature setting, the bimetal disc quickly returns to its original state, causing the contact to close or open, to achieve the purpose of turning the circuit on or off, thereby controlling the circuit.
The working temperature is fixed, the action is reliable, the arc is not pulled, the service life is long, the performance is reliable, the wireless interference is not affected, the structure is precise, and the function is complete.
four. Installation and use precautions1. When using contact temperature sensing, the surface of the metal cover of the temperature switch should be completely close to the mounting surface of the controller.
2. To ensure the temperature sensing effect, apply a thermal paste on the temperature sensing surface of the appliance.
3. Do not crush, loosen or deform the top of the metal surface of the temperature switch during installation to avoid affecting the function and precision.
4. Do not allow liquid to penetrate inside the temperature switch or excessive force to cause cracks in the casing.
5. Do not arbitrarily change the shape of the external terminal block, so as not to affect the electrical reliability, and have insulation protection measures to prevent leakage and ensure safe use.
Fives. control method1. Auto reset: Increases or decreases with temperature changes, internal contacts are automatically disconnected or automatically closed.
2. Manual reset: When the temperature rises, the contact will automatically open; when the controller temperature is cooled, it must be manually closed to reset the contact and close again.
3. One-time action
six. Technical Parameters1. Conditions of Use
1 Relative humidity is 95% at +20 °C
2 Atmospheric pressure: 86-106Kpa
3 Working position: Any
4 Heat resistance: ceramic case ≦300°C PPS plastic case ≦220°C electric wood case ≦160°C
2. Technical Parameters
1 contact form: normally closed or normally open (limited to automatic reset)
2 contact load: 250VAC16A 10A 5A or 24VDC 16A 10A 5A
3 Insulation resistance: normal temperature and humidity ≥100MΩ
4 Contact resistance: ≤ 100 mΩ
5 dielectric withstand voltage: ≥1500VAC
6 Vibration intensity: 50HZ single 0.35mm
7 Impact strength: 150m/S2
8 Weight: 10g
9 Service life: 100,000 times.
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