KI 31/KSD301 series snap action type thermal temperature switch, also known as 1/2 inch bimetallic thermostat, belongs to the mechanical action temperature controller. By highly sensitive bimetallic sheet through thermal deformation principle to achieve the dynamic/static contact on the internal structure of the temperature controller disconnect, so as to open the temperature control or temperature protection function, KI 31 bakelite type temperature control switch, is made of bakelite(chemical name: phenolic plastic) . its material characteristics: high strength, high density, strong insulation performance, not easy to deformation, environmental protection, temperature controller is commonly used as a cost-effective carrier material, often used in the temperature controller working environment below 150℃.
 
Mode of action:
1.Normally closed type(NC): Temperature rise, contact disconnect; Temperature drop, contact recovery through;
2. Normally open type(NO) :Temperature rises, the contact is connected; Temperature drop, contact recovery disconnect;
 

Main applications:
Widely used in the working environment below 150℃ of various types of temperature control and protection of the temperature controller, such as small household appliances, lighting, building ventilation, inverter welding machine, UPS power supply and so on;

Disconnect temperature: -10℃~150℃; Operating temperature error value: ±2℃;  ± 3 ℃;  ±5 ℃; Conventional standard ±5℃; 
 

Return temperature difference: ≥5K;Common action/reset temperature range: 8-30K

Contact resistance: ≤50mΩ; * Special specifications: ≤10mΩ

Electrical specifications:

CQC: 250V/125V~10A/16A, 10 0000 cycles;

TUV: 250V/125V~10A/16A, 5 0000 cycles;

U L: 250V/125V~10A/16A, 10 0000 cycles; 
 

Installation method:

1. Movable support;

2, Fixed bracket;

3. No bracket;

4. Others

Connecting terminal:

1, 187 (4.8mm) series;

2, 250(6.3mm) series;

3, 4.3mm tin plating (for welding wire);

4. Others

* For detailed function and standard item analysis, please consult our company and provide Product Specifications and technical drawings.