中國熱敏過溫保護掣

KSD9700 / KSD301型 / KSD302 / JUC-31F / 第01季 / 第6季 / 7係 / 17係 / YS11 thermostat is a common Bimetal temperature control protection switch, which adopts the working principle of overheating power-off of bimetallic strip.

中國 “3國會議員 / 6AP/朝早8啲/凌晨2啲 / 3國會議員 / 17AM+PTC過流 & 溫度雙金屬保護器” 係一種結合了標準 ” 3國會議員 ” 具有正溫度系數嘅雙金屬熱過載保護器 (PTC) 熱敏電阻, 允許它對過大嘅電流做出反應 (過流) 和高溫, 問題解決後自動切斷電源並重置; 本質上充當具有附加溫度保護嘅自恢復保險絲.

common Bimetal temperature control protection switch

Snap Disc Limit Switch KSD9700 Temperature Control

熱過溫保護掣

Key components and function:
•Bimetallic protector:
This is the primary overcurrent protection mechanism, consisting of a bimetallic disc that bends and breaks the circuit when too much current flows through it, causing excessive heat generation.

•PTC Thermistor (Positive Temperature Coefficient):
This component further enhances protection by significantly increasing its resistance when it reaches a preset temperature, further limiting current flow in case of overheating.

運作方式:
1. 1. Normal Operation:
When current is within safe limits, both the bimetallic disc and PTC thermistor operate normally, allowing current to flow freely.
2. 2. Overcurrent Condition:
If the current exceeds a preset threshold, the bimetallic disc heats up and bends, interrupting the circuit.
3. 3. High Temperature Condition:
Simultaneously, the PTC thermistor also heats up due to high current, drastically increasing its resistance and further limiting current flow.
4. 4. Resetting:
Once the fault is removed and the components cool down, the bimetallic disc returns to its original shape, re-establishing the circuit, and the PTC thermistor resets to its low resistance state, ready to protect again.

17AM+PTC過流 & 溫度雙金屬保護器

17係 / 3MP bimetallic thermal overload protector with PTC

3國會議員 / 6AP Limit Switch Motor over current – 熱保護器

應用:
• Motor Protection:
Commonly used in electric motors for appliances like washing machines, 烘乾機, and vacuum cleaners to protect against overload situations.
• Power Supply Protection:
Can be integrated into power supplies to prevent damage from overcurrent or overheating events.

Important points to consider:
• Current Rating:
Each protector is designed for a specific current rating, which should be matched to the application.
• Trip Time:
The time it takes for the protector to trip depends on the overcurrent level and the design of the bimetallic disc.
• Temperature Rating:
The PTC thermistor has a specific temperature threshold at which it activates, ensuring protection against excessive heat.