KSD309-A KSD309 Auto Reset Ceramic Body Bimetallic Thermostat

KSD309-A KSD309 Auto Reset Ceramic Body Bimetallic Thermostat

Product Details:

Place of Origin: China
Brand Name: Tianrui
Certification: VDE TUV ULTE
Model Number: KSD309-A

Payment & Shipping Terms:

Minimum Order Quantity: 1000pcs
Price: Negotiable
Packaging Details: PE bag, Bulk
Delivery Time: 5-7 work days
Payment Terms: T/T, Paypal, Mastercard, Wetern Union, Alipay, etc
Supply Ability: 1000000PCS per Month
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Detail Information

Product Name: KSD309-A Thermostat Rated Current: 10A 16A
Rated Voltage: 250V Open Temperature: 151-280℃
Body: Ceramic Contact System: Normal Closed
Reset Type: Auto Reset Cycles: 10000 Times
Contact Resistance: Below 50MΩ Switch Structure: SPST
High Light:

Ceramic Body Bimetallic Thermostat


KSD309 Bimetallic Thermostat


KSD309-A Bimetallic Thermal Switch

Product Description


KSD309-A KSD309 High Temperature 280C Ceramic Bimetallic Bimetal Thermostat


KSD309 dual-temp.type bimetal thermostat Combination of two SPST structure thermostats KSD309-A and KSD309-U. With different operating temperature, it has both functions of temperature control and over-heat protection.


KSD309-A KSD309 Auto Reset Ceramic Body Bimetallic Thermostat 0




High durability No breakdown, no flashover.
Every product will be tested, extremely high temperature pass rate.
High precision.
High temperature resistance
Assemble the temperature control and protection in one product.

KSD309-A KSD309 Auto Reset Ceramic Body Bimetallic Thermostat 1

KSD309-A KSD309 Auto Reset Ceramic Body Bimetallic Thermostat 2

Rated current 10, 16A(resistive)
Resistance Between Terminals Below 80m Q (Numeric m Q & mV meter, by volt- ampere stan-dard)
Insulation Resistance With a DC 500V megger, borne DC 500V, the tested value is over 100M Q
Class of Temperature Characteristics KSD309-A: Normal close with auto reset.
KSD309 -C: Normal close with auto reset and one- shot (thetemperature limiting part), Consisting of KSD309-A series and KSD309-U series
Switch structure SPST
Max. OT 280C
Heat-resistant Temperature 320C



Range of OT Common Diff. Min. Diff.
151~ 220°C 25°C 14°C
221~240°C 30°C 20°C
241~280°C 35°C 25°C


Range of OT Common Diff. Preferable tolerance Limit of the tolerance
151~ 180°C 士4°C 士3.5°C 士3°C
181~220°C 士5°C 士4°C 士3.5°C
221~ 240°C 士6°C 士6°C 士4.5°C
241~ 280°C 士7°C 士6°C 士5.5°C


 Safety Certificate

Sub series OT range Life cycles L250V 10A 125V 16A 250V 16A
KSD309-A 60~180°C 100,000 VDE: 40044740    

CQC: 14002120139


 60-280°C 60.000   UL:E137238sec.12 UL:E137238 Sec.12
60.000 VDE: 40044740    
210-280°C CQC: 14002120139    
60~180°C CQC: 14002120139   VDE: 40044740

CQC: 14002120139


KSD309-U 40~250°C 1 (SOD) VDE: 40043188    
40~280°C   UL:E137238 Sec.12

VDE: 40043188

UL:E137238 Sec.12

KSD309-C KSD309-A(Temp control) KSD309-A Series TUV:50357322 UL:E137238



KSD309-U(Temp limit) KSD309-U Series VDE: Sec.12 UL:E137238 Sec.12



Contact Details:

Andy Wu

Email: andy@tianrui-fuse.com.cn

MP/Whatsapp: +86 13532772961

Wechat: HFeng0805

Skype: andywutechrich

QQ: 969828363

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