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 or 60Hz,rated working voltage 690V or below,rated working current is 12.5A to 1250A of circuit and used in distributing electric energy,and non-frequent breaking in the normal conditions,protecting the current & equipement from overload under voltage,circuit breaker with rated frame current 400A or below.
Main technical specification:
| Type | Pole number | Rated insulating voltage(V) | Rated operating voltage(V) | Rated servies short circuit breaking capacity Ics at 380/415(KA) | Operation performance(ON/OFF) | Utilication category |
| NS-100N | 3,4 pole | 690 and below | 25 | 25 | 1500 | 8500 |
| 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 |
Note:1.The N-pole breaker ha no protaction which closing and opening with the other three poles.
2.The type of thermal magnetic for AM2-400-630 has no four poles.
TRIP UNITS MAIN TECHNICAL PARAMETER:
| Type | Rated current In(A) | Note |
| NS-100 | 12.5,16,20,25,32,40,50,63,80,100 | T adjustable(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 | T adjustable(0.8~1IN) M fixed |
