Touch the switch on the working principle of the introduction and need to understand many aspects of knowledge, please understand these aspects of details.

 

Terminal symbol

 

COM: common terminals

 

NC: normally closed circuit terminal

 

No: normally open terminal

 

1. rating

 

Rating refers to the value of switch characteristic and performance guarantee benchmark based on specific conditions. For example, rated voltage, rated current, etc.

 

2. Electrical life

 

Electrical life refers to the life of connecting rated load on contact and making and breaking according to specified conditions.

 

3. Mechanical life

 

The mechanical life of the light touch switch refers to the life of the switch when it is not energized on the contact and operates according to the specified operating frequency.

 

4. withstand voltage

 

Withstand voltage refers to the limit value of no insulation damage when a high voltage of 1 minute is applied to the specified measuring position.

 

5. Insulation resistance

 

Insulation resistance refers to the resistance value of the measuring part with the same resistance to voltage.

 

6. Contact resistance

 

Contact resistance refers to the electrical resistance of the contact part, generally indicating the resistance value including the conductor resistance of spring and terminal part.

 

7. vibration resistance

 

Vibration resistance refers to the vibration of the closed-circuit contact within the range of continuous opening for more than the specified time due to the vibration during the use of the switch.

 

8. Impact resistance

 

Impact resistance refers to the maximum impact value that the closed-circuit contact keeps opening for more than the specified time due to the impact in the process of using the switch.

 

9. Allowable on-off frequency

 

The allowable on-off frequency refers to the maximum operating frequency meeting the mechanical life (or electrical life).

 

10. Temperature rise

 

Temperature rise refers to the maximum value of temperature rise of terminal heating when the rated current is connected on the contact.