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Home » Products » Fuses&Breakers » Moulded Case Circuit Breaker

Moulded Case Circuit Breaker

Moulded Case Circuit Breaker
Product Code : NS
Product Description

Product Description:

NS Moulded Case Circuit Breaker 

Technique parameter:

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+40℃)

Operational current  
of magnetic  
release (A)

1.05In (cold state) inoperative time (h)

1.30In (heat state) inoperative time (h)

Inâ‰Â¤63

â‰Â¥1

< 1

10In±10%

63 < Inâ‰Â¤100

â‰Â¥2

< 2

10In±20%

100 < Inâ‰Â¤630

â‰Â¥2

< 2

5-10In±20%

 

5-10In±20%

Thermodynamic release (ambient temp+40℃)

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

12.5â‰Â¤Inâ‰Â¤400

â‰Â¥ 2h

< 2h

â‰Â¤4min

2S<tpâ‰Â¤10s< div="">

12In±20%

Specifications 

Type

Rated 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