Electrical Precautions Of Micro Switch

About using load

· AC and DC switching capabilities vary greatly, so please confirm the ratings. The DC field control capacity is very small.

This IS MAINLY BECAUSE it DOES NOT HAVE ZERO points (zero crossing points of current) like AC, so once an arc is generated, it is difficult to eliminate, resulting in a longer arc time. In addition, due to the current

Fixed direction, will cause contact migration, due to uneven contact can not be disconnected, also easy to cause misoperation.

· Reverse induced voltage will be generated in the case of induction, and the higher the voltage is, the greater the energy will be, leading to greater consumption and migration of the contact, so please confirm the rated conditions.

· When the small load side and high load side use their respective load areas to open and close the load, please connect the relay suitable for the load.

· The conditions for each type of rating are as follows.

Inductive load: power factor above 0.4 (AC), time constant below 7ms (DC)

Electric lamp load: there is a surge current equal to 10 times the constant current

Motor load: there is a surge current equal to 6 times the constant current

Note. Inductive loads are especially problematic in DC circuits, so the value of the load time constant (L/R) must be fully understood.