What is the difference between the C-type and the D-type of the miniature circuit breaker?

Promulgator : TAIXIDate : 2017-07-11Views : 162

What is the difference between the C-type and the D-type of the miniature circuit breaker?
Take DZ47-63 circuit breaker as an example, C, D-type structure is the difference: electromagnetic discharge is not the same.
What is the demon? It is responsible for short circuit protection, simply means that:
B type: 3 times the rated current does not trip, 5 times the rated current trip, tripping time is less than or equal to 0.1 seconds;
--- for the protection of electronic current smaller load.
C type: 5 times the rated current does not trip, 10 times the rated current trip, tripping time is less than or equal to 0.1 seconds;
--- for the protection of conventional load and lighting lines. (Home)
D type: 10 times the rated current does not trip, 20 times the rated current trip, tripping time is less than or equal to 0.1 seconds;
--- For the protection of the starting current of the larger load, like the motor and the like.

How to determine the peak current when the load and short circuit generated current?
It is necessary to talk about the internal work structure.
Short circuit protection: When the short circuit fault occurs, the electromagnetic force of the electromagnetic coil to drive the coil inside the core to push the putter, putting the top of the lock, making the mechanism reset, to achieve breaking function.
The circuit breaker also has a function of overload protection: when the line overload fault occurs, the overload current causes the hot bimetallic element to bend and push the latch, making the mechanism reset, thus realizing the function of the breaking circuit breaker.