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Ceramic and Bakelite KSD301 Temperature Switch
Tip: 150℃ is the material selection demarcation point. Ceramic models (such as KSD302) are mandatory above this temperature.
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
| Features | 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), fast response speed |
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, motor overheat protection – Automobile engine heating system – High temperature disinfection equipment |
– Wasserspender, coffee machine (<100℃) – Small household appliance circuit board – Low voltage heater |
| Protection level | IP00 (metal shell grounding) | IP00 (plastic shell) |
3. Selection considerations
Temperature sensitivity
If the instantaneous temperature of the equipment may be greater than 150℃ (such as motor stalling, dry burning), 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
Mermaid Copy Code
Graph LR
A[Equipment operating temperature] –>|≤150℃| B[Select bakelite KSD301]
A –>|＞ 150 ℃| C[Select ceramic KSD302]
B –> D[Check load current ≤15A]
C –> E[Reserve heat dissipation space]
▶️ Summary: 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.
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