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NS MOULDED CASE CIRCUIT BREAKER

APPLICATIONS:
NS moulded case circuit breaker is one of the most advanced type breakers in the world, which adopts international advanced design and manufacture technology. They are suitable for short circuit and overload protection for circuit of AC 690V 50/60Hz, rated current from 12.5A to 630A. It takes protect effect when mouse cage motors non-frequent start, breaking off working and protecting overload, short circuit and lacking voltage.
TRIPPING CHARACTERISTICS OF MCCB:
Rated current of release (A)
Thermodynamic release (ambient temp +40℃)
Operational current of magnetic release (A)
1.05In (cold state) inoperative time(h)
1.30In (heat state) inoperative time (h)
In≤63
≥1
<1
10-50In±20%
63<In≤100
≥2
<2
10In±20%
100<In≤630
≥2
<2
5-10In±20%

Rated current of release (A)
Thermodynamic release (ambient temp +40℃)
Operational current of magnetic release (A)
1.0In (cold state) operative time(h)
1.20In (heat state) operative time (h)
1.50In (heat state) operative time (h)
1.01In (heat state) operative time (h)
12.5≤In≤400
≥2
<2
4≤min
2S<TP≤10
12In±20%
SPECIFICATION:
Type
Rated current
(A)
Poles
Rated insulating voltage
(V)
Rated operating voltage
(V)
Arcing over distance
(mm)
Utimate short circuit breaker capacity
Servies short circuit breaker capacity
Operating
performance
(times)
NS-100D
12.5,16,20,
25,32,40,50,
63,80,100
3,4
950
690
0
18
18
1500,8500
NS-100N
25
25
NS-100H
70
70
NS-100L
150
150
NS-160D
16,20,25,32,
40,50,63,80,
100,125,160
25
25
1500,7000
NS-160N
36
36
NS-160H
70
70
NS-160L
150
150
NS-250D
160,180,
200,225,250
25
25
1000,7000
NS-250N
36
36
NS-50H
70
70
NS-250L
150
150
NS-400D
200,225,250,
300,315,400
35
35
1000,4000
NS-400N
45
45
NS-400H
70
70
NS-400L
150
150
NS-630D
315,250,400,
500,600,630
35
35
10004000
NS-630N
45
45
NS-630H
70
70
NS-630L
150
150
 
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