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thermal switch for microwwave oven

Categories KSD301 snap action thermostat
Place of Origin: China
Brand Name: HENG HAO
Certification: UL,CQC,VDE,ROHS
Model Number: KSD301
MOQ: 1000PCS
Price: negotiable
Packaging Details: 1000pcs per carton
Delivery Time: 7 days
Payment Terms: LC,TT, CASH, WEST UNION
Supply Ability: 1000000000 PCS PER MONTH
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    thermal switch for microwwave oven

    KSD301 temperature protector’s Principle and structure

    The main principle ofKSD series thermostat is that one function of bimetal discs is snap action under the change of sensing temperature. The snap action of disc can push the action of the contacts through the inside structure, and then caused on of off the circuit finally. The main characteristic are the fixation of working temperature, the reliable snap action, less flashover longer working life and less radio interference.

    2. KSD301thermostat’s specification

    2.1. Electrical Rating: AC 125V max 15A; AC250V 5A 10A 15A max 16A

    2.2. Action Temperature: -10~300 degree

    2.3. Recovery and action temperature difference: 10 to 25 degrees, or according to client's request.

    2.4. Temperature deviation:+-3 / +-5 / +-10 degree or according to client's request

    2.5. Circuit resistance: ≤50mΩ (Initial value)

    2.6. Insulation resistance:≥100mΩ (DC500V Normal State)

    2.7. Dielectric Strength: AC50Hz 1500V / min, no breakdown blinding (Normal State)

    Life cycle:≥100000

    2.8. Normally closed or open

    2.9. Two kinds of mounting bracket: movable or immovable

    2.10. Terminal

    a. Terminal type: 187series of 4.8*0.5mm and 4.8*0.8mm, 250 series of 6.3*0.8mm

    b. Terminal Angle:bending angle: 0~90°Coptional

    2.11. Two kinds of body: plastic or ceramic.

    2.12. Two kinds of temperature sensor face: aluminium cap or copper head.


    3. Difference of auto reset type and Manual reset type

    3.1. Manual reset type:Temperature sensing components consist of bimetallic strip. When the temperature reached the action temperature range, it will jump quickly and the movable disc disconnects. When the temperature declines to a fixed temperature point, the contact point cannot reset until reconnecting the circuit by pushing the reset button. And then the contact points recover, reaching a purpose of connecting or disconnecting the circuit and restarting the circuit by manual reset. (Kindly reminder: 1.This type of manual reset thermostat can reset when the temperature declines 20 °C after snap action by pressing the reset button. And 4~6 N will be advisable; please don’t use too much strength. 2. To ensure the normal function, the distance between the reset button and the close cover should not be less than 20.4mm. )

    3.2. Manual reset type: Temperature sensing components consist of bimetallic strip. When the temperature reached the action temperature range, it will jump quickly and the movable disc disconnects. When the temperature declines to a fixed temperature point, the contact point can auto reset and start working.

    4.KSD301 bimetal thermostat’s Application

    It is used as temperature control for household electric appliances and widely applied in coffee pots, automatic toasters, laminators, electric water pots, steam guns, steam irons, wind warmers, microwave ovens, water dispensers, etc.


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