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Molded Case Circuit Breaker

NS/NSX series Mouled case circuit breaker (following call the breaker) is one new type breaker which this company adopts international advanced design. manufacture technology to develop. The rated insulating voltage is 950V, suitable for AC 50Hz (60Hz), rated working voltage 690V and under it, rated working current is 100A~1250A of circuit. Using in distributing electric energy, frequent closing and breaking in the normal cases and protecting when circuit and installation are overload, short circuit and lacking voltage.

Technical Data

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

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.

3 Trip units main technical parameter
Thermal magnetic release

1-1.jpg

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

NS-1600

1000,1250,1600


Electronic release
NS 22SE: protection of low-voltage distribution networks for NS-100\160\250
1-2.jpg
1. Overload protection with adjustable threshold
2. Short-circuit protection with adjustable threshold
3. Load indication : light at 90% of Ir setting threshold;
Flashing at 105% or more of Ir setting threshold

Type

Rated current In(A)

Note

NS-100

40,100

Ir=0.4~1×In(adjustable 48 setting)
Tripping between 1.05~.3×Ir (IEC60947-2)
(Long-time overload protection)
Im=2-3-4-5-6-7-8-10×Ir
(Short-circuit protection)

NS-160

40,100,160

NS-250

40,100,160,250


NS 22ME: protection of motor for NS-100\160\250

1-3.jpg
1. Overload protection with adjustable threshold, as defined by IEC60947-4 (2) tripping class 10
2. Short-circuit protection with fixed threshold (13xIr)
3. phase failure protection (tripping time delay between 3.5s-6s)
4. Load indication : dark less than 105% of Ir setting threshold;
Flashing at 105% or more of Ir setting threshold


Type

Rated current In(A)

Note

NS-100

40,50,80,100

Ir=0.6-0.63-0.67-0.71-0.75-0.80-0.85-0.90-0.95-1×In

NS-160

40,50,80,100,150

NS-250

40,50,80,100,150,220


NS 23SE: protection of low-voltage distribution networks for NS-400\630

1-4.jpg
1. Overload protection with adjustable threshold
2. Short-circuit protection with adjustable threshold
3. Load indication : light at 90% of Ir setting threshold;
Flashing at 105% or more of Ir setting threshold


Type

Rated current In(A)

Note

NS-400

400

Ir=0.4~1×In(adjustable 48 setting)
Tripping between 1.05~1.3×Ir (IEC60947-2)
(Long-time overload protection)
Im=2-3-4-5-6-7-8-10×Ir
(Short-circuit protection)

NS-630

630


NS 53UE: protection of low-voltage distribution networks for NS-400\630

1-5.jpg
1. Overload protection with adjustable threshold, as defined by IEC60947-2
2. Short-circuit protection with adjustable threshold
3. Instantaneous short-circuit protection
4. Earth fault protection with adjustable threshold
5. Load indication : light at 90% of Ir setting threshold;
Flashing more than Ir setting threshold
6. Fault indication
LEDs indicates the type of fault that caused tripping
Overload (LT protection) or abnormal component temperature (>Ir);
Short-circuit (ST or instantaneous protection)( >Im);
Earth fault (if earth fault protection option is present)(Ig);
Microprocessor malfunction (both (>Ir) and ( >Im) LEDs go on ,plus the (Ig) LEDs if earth fault protection option is present )
Battery powered. Spare battery are supplied in an adapter box. When a fault occurs , the LED indicating the type of fault ,lights for about 10 minutes . The information is however stored in memory . The LED can be illuminated by pressing the test pushbutton. The LED automatically goes off and the memory is cleared when the circuit breaker is reset .

Type

Rated current In(A)

Note

NS-400

400

Ir=0.4~1×In(adjustable 48 setting)
Tripping between 1.05~1.3×Ir (IEC60947-2)
at 6×Ir Trip time: 1s, 2s, 4s, 8s, 16s(adjustable)
(Long-time overload protection)
Isd=1.5-2-3-4-5-6-7-8-10×Ir
Trip time: 0s, 0.1s, 0.2s, 0.3s adjustable+I2t
(Short-circuit short time delay protection)
Ii=1.5-2-3-4-6-7-8-10-11×Ir
(Instantaneous short-circuit protection)
Ig=0.1-0.2-0.3-0.4-0.5-0.6-0.7-0.8-1×Ir
Trip time: 0.1s, 0.2s, 0.3s, 0.4s adjustable+I2t
(Earth fault protection) (If option is present)

NS-630

630


NS 43ME: protection of motor for NS-400\630

1-6.jpg
1. Overload protection with adjustable threshold, as defined by IEC60947-4 (2) tripping class 10A,10 and 20
2. Short-circuit protection with adjustable threshold (6...13xIr)
3. Phase failure protection (built-in electronic release: operates unbalanced single-phase currentat 40% and more than )(tripping time delay 4s±10%),as defined by IEC60947-4.1
4. Load indication : Flashing more than Ir setting threshold
5. Fault indication
LEDs indicates the type of fault that caused tripping
Overload (LT protection) or abnormal component temperature (>Ir);
Short-circuit (ST or instantaneous protection)( >Im);
Phase failure (right LED);
Microprocessor malfunction ( (>Ir) ( >Im) and phase failure LEDs all go on )
Battery powered. Spare battery are supplied in an adapter box. When a fault occurs ,the LEDindicating the type of fault ,lights for about 10 minutes . The information is however stored inmemory . The LED can be illuminated by pressing the test pushbutton. The LED automaticallygoes off and the memory is cleared when the circuit breaker is reset .

Type

Rated current In(A)

Note

NS-400

400

Ir=0.4~1×In(adjustable 48 setting)
Trip degree: class 10A, 10,20(IEC60947-4)
(Long-time overload protection)
Im=6-7-8-9-10-11-12-13×Ir
(Short-circuit protection)

NS-630

630


4.Accessories


Accessories

Rated operating voltage

Consumption

For type

Pick-up

Seal-in

Shunt release(MX)

24V
100V
220/230V
380/400V

<10VA

<5VA

NS-100~630

Under-voltagerelease(UN)

220/230V
380/400V

<10VA

<5VA



Accessories

Rated operating voltage

Consumption

For type

AC12

AC15

Auxiliary contact(OF)

380/400V

6

3

NS-100~630

Alarm contact(AL)

380/400V

6

3


Rotary handle
Direct rotary handle
Degree of protection:IP40
Function:
1) suitability for isolation
2) indication of three positions 0(off) I(on) and tripped
3) press "push to trip" button, can trip-free
4) visibility of and access to trip unit settings
5) the circuit breaker can be locked in the off position by one to three padlocks , diameter 5 to 8mm(not supplied)
Extended rotary handle
Degree of protection:IP55
Function:
1) Suitability for isolation
2) Indication of three positions 0(off) I(on) and tripped
3) Visibility of and access to trip unit settings when the door is open
4) Door opening prevented when circuit breaker is on
5) The circuit breaker can be locked in the off position by one to three padlocks , diameter 5 to 8mm(not supplied).Locking prevents opening of the switchboard door

5.Installation
Circuit breaker may be mounted vertically, horizontally or flat on their back without any derating of characteristics.
6.Fix
Mounting on backplate , mounting on rails
7.Connection
Front panel connection , black panel connection , plug-in connection
8. Outline and Installation Dimension

1-7.jpg

mm

C

C1

C2

C3

G

G1

G4

G5

H

H1

H2

NS 100/160/250N/H/L

29

76

54

108

62.5

125

70

140

80.5

161

94

NS 400/630N/H/L

41.5

116

92.5

184

100

200

113.5

227

127.5

255

142.5



mm

H3

H4

H5

H6

H7

K

K1

K2

L

L1

L2

P1

P2

P4

P5

NS 100/160/250N/H/L

188

160.5

321

178.5

357

17.5

35

70

52.5

105

140

81

86

111*

83

NS 400/630N/H/L

285

240

480

237

474

22.5

45

90

70

140

185

95.5

110

168

107



mm

P6

R

R1

R2

R4

R5

ΦT

ΦT4

(Ue)

NS 100/160/250N/H/L

88

14.5

29

54

108

143

6

22

≤32

NS 400/630N/H/L

112

31.5

63

71.5

143

188

6

32

≤32

*P4=126 is suitable for=NS 250N/H/L

 

Specifications
TEL : 0577-62786986
ADD : No119 Xinguang Road Industry Liushi Town Yueqing City
Zhejiang Province China
WEB : www.chinahorel.com
E-mail : alan@chinahorel.com

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