Ceramic and Bakelite KSD301 Temperature Switch

The following is a core comparison and selection guide for ceramic and Bakelite ‌KSD301 temperature switches. Comprehensive technical parameters and application scenario analysis:
1. Comparison of core material characteristics‌

特征	Ceramic material	Bakelite material
‌Temperature resistance limit‌	>300℃ (long-term stability)	≤150℃ (easy to deform and age above 160℃)
‌Thermal conductivity‌	High thermal conductivity (20-30W/m•K), 响应速度快	Low thermal conductivity (about 0.3W/m•K), delayed response
‌Insulation strength‌	Breakdown voltage ≥10kV, strong electrical isolation	Low breakdown voltage (depends on thickness)
Corrosion resistance	Resistant to chemical corrosion, suitable for acid and alkali environment	Suitable to organic solvent erosion
Mechanical strength	High hardness (Mohs 7), wear resistance	Medium strength, easy to process

‌Tip‌: 150℃ is the material selection demarcation point. Ceramic models (such as KSD302) are mandatory above this temperature.

KSD301 SPECIFICATION，Ceramic and Bakelite KSD301 parameter download

Comparison between bakelite KSD301 and ceramic KSD302

Bakelite KSD301 temperature switch

Ceramic KSD302 temperature switch

2. Models and applicable scenarios‌

Parameters‌	Ceramic model (such as KSD302)	Bakelite model (KSD301)
‌Action temperature range‌	45℃~300℃ (supports ultra-high temperature control)	40℃~250℃ (conventional temperature range)
‌Typical applications‌	– Industrial furnace, 电机过热保护 – Automobile engine heating system – High temperature disinfection equipment	– 饮水机, 咖啡机 (<100℃) – Small household appliance circuit board – Low voltage heater
‌Protection level‌	防护等级00 (metal shell grounding)	防护等级00 (plastic shell)

3. Selection considerations‌

‌Temperature sensitivity‌
If the instantaneous temperature of the equipment may be greater than 150℃ (such as motor stalling, 干燃烧), the ceramic model must be selected to avoid Bakelite melting and short circuit.
‌Cost and maintenance‌
The unit price of the Bakelite model is low (about ¥1.3~2.5), and the ceramic model is 30%~50% more expensive but has a longer life.
‌Installation compatibility‌
Pay attention to the brittleness of the ceramic model to avoid mechanical extrusion; the Bakelite model is prohibited from welding terminals (high temperature damage).

‌Fourth, Operation Suggestions‌
美人鱼复制代码
graph LR
A[Equipment operating temperature] –>|≤150℃| 乙[Select bakelite KSD301]
A –>|＞150℃| C[Select ceramic KSD302]
乙 –> D[Check load current ≤15A]
C –> 乙[Reserve heat dissipation space]

▶qummary‌: The bakelite model is cost-effective and suitable for daily household appliances; the ceramic model is just needed in high temperature and corrosive scenes and is more reliable for long-term use.