KSD Snap Action Thermostat
Snap action thermostat, also known as bimetal thermostat. All kinds of snap action thermostat models are collectively referred to as KSD, such as KSD301, ksd302, etc. which are mainly used in variety of electric heating products. When it is used as overheat protection, it is usually used in series with thermal fuse, and the snap action thermostat is used as a primary protection. Thermal fuse is used as secondary protection in case of over temperature of electric heating element caused by sudden tripping thermostat failure. It can effectively prevent the burning out of the electric heating element and the fire accidents caused by it.
KSD temperature controller is a kind of bimetallic wafer with constant temperature as a thermal sensitive reaction component. When the temperature of the main part of the product increases or decreases, the heat generated is transferred to the bimetallic wafer to achieve rapid action when the action temperature is set. Through the action of the mechanism, the contact is opened or closed to achieve the purpose of connecting or breaking the circuit, so as to control the circuit.
Main advantages:
Long life, high precision, anti EMC test, no arc, small volume, stable performance.
Application of snap action thermostat:
It is mainly used in the occasions where the circuit needs to automatically turn on and off with the change of temperature, so that the temperature of the appliance can be controlled in a constant temperature range.
1. Household appliances (water dispenser, electric water bottle, household water heater, microwave oven, electric oven, hair dryer, fireplace, etc.)
2. Office equipment (coating machine, hot melt machine, laser printer)
3. Automobile (overheat protection, seat heater)
Other electric appliances and motors are used as temperature control and overheat protection components in various electric heating appliances.
Technical parameters:
1. Electrical parameters: ① VDE, CQC, UL, t ü Vac250v 50 ~ 60Hz 10A (resistive load) ② ulac125v 50Hz 15A (resistive load)
2. Operating temperature range: - 50 ~ 270 ℃ (optional), temperature accuracy: ≥ 0 ± 2℃
3. Reset and action temperature: 3 ~ 270 ℃ (optional)
4. Wiring mode: plug in terminal 250 # (bend 0 ~ 90) ° Optional); Plug in terminal 187 # (bend 0 ~ 90) ° Optional), thickness 0.5, 0.8mm optional; Other special plug terminals can be customized
5. Service life: ① 100000 times; ② 10000 times
6. Electrical strength: ac2000v, lasting for 1min, no flicker, no breakdown
7. Contact resistance: ≤ 50m Ω
8. Insulation resistance: ≥ 100m Ω
9. Contact form: normally closed type: temperature rise, contact off, temperature drop, contact on; Normally open type: temperature rise, contact on, temperature drop, contact off
10. Enclosure protection grade: IP00
11. Grounding mode: the metal shell of the temperature controller is connected with the grounding metal parts of the device.
12. Installation method: KSD301 series install ordinary movable ring, install small circle movable ring, install flat movable ring, ordinary large aluminum cover with installation hole, and lengthened aluminum cover with installation hole.
Control mode:
1. Automatic reset temperature control switch: with the temperature increasing or decreasing, the internal contact will automatically open and close.
2. Reset the temperature control switch manually: when the temperature rises, the contact will automatically open; When the temperature of the controller cools down, the manual button must be used to reset the contact and close it again.
3. One time action:
4. Automatic and manual integration.
