KSD301 snap-actionthermostat / bimetal thermalprotector / KSD301 temperatureprotector

1. KSD301 temperatureprotector’s Principle and structure

The main principle of KSD series thermostat is that one functionof bimetal discs is snap action under the change of sensingtemperature. The snap action of disc can push the action of thecontacts through the inside structure, and then caused on of offthe circuit finally. The main characteristic are the fixation ofworking temperature, the reliable snap action, less flashoverlonger working life and less radio interference.

2. KSD301 thermostat’s specification

2.1. Electrical Rating: AC 125V max 15A; AC250V 5A 10A 15A max16A

2.2. Action Temperature: 0~250 degree

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

2.4. Temperature deviation: ±3 / ±5 / ±10 degree or according toclient''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 breakdownblinding (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, 250series of 6.3*0.8mm

b. Terminal Angle: bending angle: 0~90°C optional

2.11. Two kinds of body: plastic or ceramic.

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

3. Difference of auto reset type and Manual reset type

3.1. Manual reset type: Temperature sensing components consistof bimetallic strip. When the temperature reached the actiontemperature range, it will jump quickly and the movable discdisconnects. When the temperature declines to a fixed temperaturepoint, the contact point cannot reset until reconnecting thecircuit by pushing the reset button. And then the contact pointsrecover, reaching a purpose of connecting or disconnecting thecircuit and restarting the circuit by manual reset. (Kindlyreminder: 1.This type of manual reset thermostat can reset when thetemperature declines 20 °C after snap action by pressing the resetbutton. And 4~6 N will be advisable; please don’t use too muchstrength. 2. To ensure the normal function, the distance betweenthe reset button and the close cover should not be less than20.4mm. )

3.2. Manual reset type: Temperature sensing components consistof bimetallic strip. When the temperature reached the actiontemperature range, it will jump quickly and the movable discdisconnects. When the temperature declines to a fixed temperaturepoint, the contact point can auto reset and start working.

4. KSD301 bimetalthermostat’s Application

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

The product UL,CQC,VDE and RoHS certification approval.

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