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By certification 
Circuit breakers can be used to distribute power, not frequently start the asynchronous motor, protect the power lines and motors, automatically cut off the circuit when they have a serious overload or short circuit and undervoltage failure. it is a combination of the fuse switch And overheat relays . And generally do not need to change the parts after breaking the fault current. At present, Circuit breakers has been widely used.
Type |
AN-T125 |
AN-T160 |
AN-T250 |
AN-T400 |
AN-T630 |
AN-T800 |
|
Poles Number |
3,4 |
3,4 |
3,4 |
3,4 |
3,4 |
3,4 |
|
Rated Current In(A) |
16-100 |
80-160 |
100-250 |
200-400 |
400,500,630 |
500,630,700,800 |
|
Rated working Voltage Ue(V)(50/60Hz) |
690 |
690 |
690 |
800 |
800 |
800 |
|
Rated Operating Voltage Ue(V) |
380 |
380 |
380 |
660 |
660 |
660 |
|
Rated insulation Voltage Ui(V) |
660 |
660 |
660 |
660 |
660 |
660 |
|
Utilisation category |
A |
A |
A |
A |
A |
A |
|
|
Ultimate short-circuit breaking capacity (KA) |
AC380V(400) |
35 |
35 |
35 |
35 |
50 |
50 |
AC660V(690) |
8 |
8 |
10 |
16 |
20 |
20 |
|
DC250 |
20 |
20 |
40 |
18 |
30 |
30 |
|
Short circuit breaking(KA) |
AC380(400) |
18 |
18 |
18 |
18 |
30 |
30 |
