Interrupteur de température en céramique et bakélite KSD301

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

Caractéristiques	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), vitesse de réponse rapide	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

conseil: 150℃ est le point de démarcation de la sélection des matériaux. Modèles en céramique (comme KSD302) sont obligatoires au-dessus de cette température.

KSD301 SPECIFICATION，Ceramic and Bakelite KSD301 parameter download

Comparaison entre le bakélite KSD301 et la céramique KSD302

Bakelite KSD301 temperature switch

Ceramic KSD302 temperature switch

2. Models and applicable scenarios‌

Parameters‌	Ceramic model (comme KSD302)	Bakelite model (KSD301)
‌Action temperature range‌	45℃~300℃ (supports ultra-high temperature control)	40℃~250℃ (conventional temperature range)
‌Typical applications‌	– Industrial furnace, Protection de surchauffe du moteur – Automobile engine heating system – High temperature disinfection equipment	– Distributeur d'eau, coffee machine (<100℃) – Small household appliance circuit board – Low voltage heater
‌Protection level‌	IP00 (metal shell grounding)	IP00 (plastic shell)

3. Considérations de sélection‌

‌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
Code de copie de sirène
graph LR
UN[Equipment operating temperature] –>|≤150℃| B[Select bakelite KSD301]
UN –>|＞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.