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S01 Thermal Motor Protector

S01 Button type is snap action and bimetallic thermostat, Bimetal trips off or on quickly to open or close the circuit when temperature reaches the prescribed value.

Product Details:



Special Features

* Small size and easy for mounting;

* Low current sensitivity, no large temperature difference due to over current;

* Precise temperature control.

Electrical Specifications

250V AC : 3A

125V AC : 6A

24V DC: 6A

Contact Resistance: <30mΩ

Dielectric Strength: 2KV

Temperature Range And Tolerance


Operating Temperature 60~220℃, A specification for each 5℃
Operating Temperature Tolerance ±5℃
Reset Temperature Less than 1/3 of operating temperature
Reset Temperature Tolerance ±15℃





Curtain Motor

Washing Machine Motor




TUV:R 50383352 0001


Dimensional Drawings



Series Application





1. What parameters should I provide when I am trying to ask for thermal protector samples?

If you need to have temperature sensitive thermal protector samples, please prepare the following parameters:

1. Rated voltage, current

2. Action temperature of thermal protector

3. Leadwire length, type and temperature rating.

4. Application of thermal protector.

5. Mounting requirements if needed, including dimensional requirements.

If you want to have current sensitive thermal protector samples, you may prepare three more parameters besides the above:

1. Trip off current

2. Trio off time

3. Normally working temperature of thermal protector. It can not trip off under this temperature.

2. How should I select the correct action temperature of thermostat?

The action temperature selection of a thermostat should be based on the application:

Measure the temperature of the position where the thermostat would be mounted;

Setting the temperature range of application;

Select the temperature of a thermostat. The current flowing through thermostat need to be considered when selecting this temperature. If this thermostat is used for heat protection, the action value should be above the normal working temperature, but lower than the temperature limit of other components to be damaged.

3. Are there special cautions should be noted when testing thermal switch?

Please pay attention to the following issues when testing thermal switch samples:

1.The internal temperature of testing equipment should be even and consistent. The temperature difference between any two points should be less than 1℃;

2.The temperature rising speed should be under control. The speed can be fast before the temperature reaches the 10℃ lower than bottom limit of rated temperature tolerance value. After that, the speed has to be at or lower than 1℃ per 2 minutes. And the ambient temperature rises to the rated range slowly.

3.When installing thermal switches to the testing equipment, the body of thermal switch should contact the testing facility tightly and effectively. The circuit connection should be workable. If there is a temperature sensing head or thermocouple inside of the equipment, it should be mounted on the effective position.

4.The test equipment should be calibrated on time and work properly.




Contact Information

Company Name: Yangzhou Wuyue Electric Co.,Ltd

Address:Building D, Software Information Industrial Park, No.2 Huaijiang Avenue, Baoying County, Jiangsu Province, China

Contact: Lorena Qiao

Mobile: +86 153 6641 6606 / 189 2191 2633

Tel: +86 514 88986588

Fax:+86 514 8898 6599