¡¤Application
NS series moulded case circuit breaker is one of breaker which adopts international advanced design, manufacture technology to develop. The rated insulating voltage is 750V, suitable for AC 50Hz(60Hz),rated working voltage 690V or below, rated working current is 12.5A to1250A of circuit and used in distributing electric energy, and non-frequent breaking in the normal conditions , protecting the current& equipment from overload& under voltage, circuit breaker with rated frame current 400A or below,can be used in mousecage motor¡¯s non-frequent start,breaking during working, protecting motor from overload, short circuit& undervoltage,the product conforms to IEC60947-2 standard.
| Type |
Pole number |
Rated insulating voltage(V) |
Rated operating voltage(V) |
Rated ultimate short circuit breaking capacity Icu (KA) at 380/415V |
Rated servies short circuit breaking capacity Ics at 380/415V(KA) |
Operation performance |
Utilization category |
| ON |
OFF |
| NS-100N |
3, 4pole |
750 |
690 and below |
25 |
25 |
1500 |
8500 |
A |
| NS-100H |
70 |
70 |
| NS-100L |
150 |
150 |
| NS-160N |
36 |
36 |
1000 |
7000 |
| NS-160H |
70 |
70 |
| NS-160L |
150 |
150 |
| NS-250N |
36 |
36 |
1000 |
7000 |
| NS-250H |
70 |
70 |
| NS-250L |
150 |
150 |
| NS-400N |
45 |
45 |
1000 |
4000 |
| NS-400H |
70 |
70 |
| NS-400L |
150 |
150 |
| NS-630N |
45 |
45 |
1000 |
4000 |
| NS-630H |
70 |
70 |
| NS-630L |
150 |
150 |
| NS-1250N |
3 pole |
50 |
37.5 |
1000 |
4000 |
| NS-1600N |
50 |
37.5 |
¡¤Main Technical Parameter
Note:1. The N-pole breaker has no protection which closing and opening with the other three poles. 2. The type of thermal magnetic for NS-400/630 has no four poles.
| Type |
Rated currentIn(A) |
Note |
| NS-100 |
12.5,16,20,25,32,40,50,63,80,100 |
Tadjustable (0.8~1In)M adjustable (5~10In) |
| NS-160 |
16,20,25,32,40,50,63,80,100,125,160 |
| NS-250 |
160,180,200,225,250 |
| NS-400 |
315,350,400 |
| NS-630 |
400,500,630 |
| NS-1250 |
800,1000,1250 |
Tadjustable (0.8~1In)M fixed |
