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A button-type thermal protector is a compact and self-contained thermal protection device used to prevent overheating in various electrical and electronic applications. It is typically designed as a small disc-shaped component with two leads or terminals for electrical connection.

Here are some key features and characteristics of button-type thermal protectors:

1. Temperature Sensing: The button-type thermal protector is designed to respond to changes in temperature. It contains a temperature-sensitive element, such as a bimetallic disc or a thermally sensitive pellet, which deforms or activates at a specific temperature threshold.
2. Self-Resetting: Unlike some thermal protectors that are non-resettable, button-type thermal protectors are often self-resetting. Once the temperature decreases below the threshold, the thermal protector resets automatically, allowing the circuit to resume normal operation.
3. Electrical Connection: Button-type thermal protectors have two leads or terminals for electrical connection. These terminals are typically designed for easy soldering or connection to the circuit.
4. Current and Voltage Ratings: Button-type thermal protectors are available in various current and voltage ratings to accommodate different applications. It is important to choose a thermal protector with ratings that match the requirements of the specific application.
5. Compact Size: Button-type thermal protectors are compact and space-saving, making them suitable for applications with limited space or where discreet protection is needed.
6. Wide Range of Temperature Ratings: Button-type thermal protectors are available in a wide range of temperature ratings, allowing for protection at various temperature thresholds. The specific temperature rating should be selected based on the desired protection level and the operating temperature range of the application.

Button-type thermal protectors are commonly used in appliances, motors, transformers, power supplies, and other electronic devices where temperature control and protection are critical. They provide an efficient and reliable means of safeguarding against overheating and potential damage.

When selecting a button-type thermal protector, it is important to consider the temperature rating, current and voltage ratings, and the specific application requirements. It is recommended to follow the manufacturer’s guidelines and specifications for proper installation and use of the thermal protector.