
KSD301 snap action temperature switch bimetal thermostat
Working Principle
Bimetallic Disc: The heart of the KSD301 is a bimetallic disc, composed of two metals with different thermal expansion coefficients.
Temperature Change: As the temperature surrounding the thermostat increases or decreases, the bimetallic disc responds by bending.
Snap-Action Mechanism: When the temperature reaches a predetermined set point, the bimetallic disc snaps, causing the electrical contacts to open or close abruptly. This rapid action ensures precise temperature control.
Temperature Reset: Once the temperature falls below the reset point, the bimetallic disc returns to its original position, resetting the contacts.
Key Features and Benefits
High Precision: The bimetallic design allows for accurate temperature sensing and control.
Reliability: The snap-action mechanism ensures quick and reliable operation.
Durability: The hermetically sealed construction protects the internal components from environmental factors.
Compact Size: The small form factor makes it suitable for various applications.
Customizable: Available in a wide range of temperature settings, contact types, and mounting options.
Cost-Effective: A budget-friendly solution for temperature control needs.
Common Applications
Household Appliances:
Irons
Hair dryers
Toasters
Coffee makers
Water heaters
Industrial Equipment:
Motor protection
Heating elements
Lighting fixtures
Battery chargers
Parameter |
Description |
Model |
KSD301 |
Voltage |
AC 250V/15A |
Tripping Temperature Range |
-20°C to 240°C |
Temperature Tolerance |
±5°C, ±8°C |
Contact Type |
Normally Open (NO) or Normally Closed (NC) |
Reset Type |
Automatic or Manual |
Mounting Type |
Fixed or Movable |
Terminal Type |
Straight or Curved |
Terminal Size |
6.3×0.8、4.8×0.5 |

As China KSD301 snap action temperature switch bimetal thermostat Suppliers and Custom KSD301 snap action temperature switch bimetal thermostat Company,The company has a strong ability to develop, produce, and test. We have invested a lot in researching and developing new products by introducing abroad new and advanced technology, such as the automatic production line from Japan. The management system is strictly carried out according to the ISO9001. Our vision is to pursue excellence, develop the Yitong brand, obey integrity, and meet the requests of the customers. Intensify the quality monitoring and management, and proceed with normalized and standardization management. Construct the company culture and strengthen the core competitiveness.

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