Bimetallic 250C 280C Thermostat KSD309-A KSD309 Auto Reset Ceramic Body High Temperature
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.
Specification of KSD309-A KSD309 Thermostat
| 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 |
Advantages of KSD309-A KSD309 Auto Reset Thermostat
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.
Drawing of High Temperature KSD309-A KSD309 Thermostat
Temperature of 250C 280C KSD309 KSD309-A Thermostat
| 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 of Ceramic Body Bimetallic KSD309-A Thermostat
| Sub series | OT range | Life cycles | L250V 10A | 125V 16A | 250V 16A |
| KSD309-A | 60~180°C | 100,000 | VDE: 40044740 | | |
| 60-210°C | CQC: 14002120139 TUV:R50332938 | | |
| 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 |
| 60~210°C | | | CQC: 14002120139 TUV:R50332938 |
| 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 | VDE: TUV:50357322 |
| 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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Bimetallic 250C 280C Thermostat KSD309-A KSD309 Auto Reset Ceramic Body High Temperature Images
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