CIRCUIT BREAKER >> MCCB
NS
 

    

               NS-100N                                  NS-250N                                          NS-630N

Application

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.Its rated insulation voltage is 690V. It can make and break the non-frequently circuit in the normal conditions. It takes protect effect when mouse cage motors non-frequent start, breaking off working and protecting overload, short circuit and lacking voltage. It complies with IEC60947-2.
Tripping Characteristics
Rated current of release (A)
Thermodynamic release (ambient temp+40iC)
Operational current
of magnetic
release (A)
1.05In (cold state)
inoperative time (h)
1.30In (heat state)
inoperative time (h)
In¡Ü63
¡Ý1
< 1
10In¡À20%
63 < In¡Ü100
¡Ý2
< 2
10In¡À20%
100 < In¡Ü630
¡Ý2
< 2
5-10In¡À20%

Rated current of release (A)
Thermodynamic release (ambient temp+40iC)
Operational current
of magnetic
release (A)
1.0In
(cold state) inoperative time
1.20In
(heat state) operative time
1.50In
(heat state) operative time
7.2In (heat state) operative time
12.5¡ÜIn¡Ü400
¡Ý 2h
< 2h
< 2h
12In¡À20%

Specifications
Type
TRated current
(A)
Poles
Rated insulation voltage (V)
Rated operating voltage
(V)
Arcing over distance (mm)
Ultimate short circuit breaking capacity
Servies short circuit breaking capacity
Operating performance (times)
ON
OFF
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-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-250D
160,180,200,225,250
25
25
1000
7000
NS-250N
36
36
NS-250H
70
70
NS-400D
200,225,250,300,315,400
35
35
1000
4000
NS-400N
45
45
NS-400H
70
70
NS-630D
315,350,400,500,600,630
35
35
1000
4000
NS-630N
45
45
NS-630H
70
70
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