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 Products >> LOW VOLTAGE PRODUCTS >> MOULDED CASE BREAKER >> MSM2(NS) Series Moulded Case Circuit Breakers
MSM2(NS) Series Moulded Case Circuit Breakers
    Product details

MSM2(NS) Series Moulded Case Circuit Breakers

 

Product Features

MSM2(NS) series moulded case circuit breaker is one of new type breakers 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 or below, rated working current is 12.5 to 630A of circuit. and use in distributing electric energy. Non-frequent making and breaking in the normal conditions and protecting when circuit and installation are overload, short circuit and lacking voltage. Rated shell-rack and the breaker which current is under 400A.take protect effect when mousecage motor's non-frequent start,breaking off working and protecting overload, short circuit and lacking voltage. The product confirms to GB14048.2, IEC60947-2 standards.

 

Type and meanings

 

Note:   * No code for distribution breaks;2 represent motor protection circuit breakers.
           * No code for direct handle operation ; P represents electrical operatipn, and Z represents-ratary -operated-handles.
           * Rated breaking capacity grade of MCCB : D-Economical type N-Standard type H-high breaking capacity type L-highest breaking capacity type

Classification of MCCB

Installation type of MCCB: MCCB are suiable for vertical or harizontal installation.
According to use of MCCB: distribution circuit protection type, motor protection type;
According to connection way : front panel connection, back panel connection plug-in connection ;
According to operation way: for direct handle operation for external rotary handle operating, formotor operating;
According to overload release type: magnetic release (only instantaneous) the modynamicmagnetic type (dual), electronical release;
According to number of poles: two poles, there poles, four poles.
The neutral poles (N poles) of four poles MCCB has for types:
Type A: no overload release on N pole, which is making at the time ; not closing and openingwith the other three poles.
Type B: no overload release on N pole, which closing and opening with the other three poles.
Type C: with overload release on N pole, which closing and opening with the other three poles.
Type D: with overload release on N pole, which making all time; not closing and opening withthe other three poles.

Main technical Specifications

Rated breaking capacity grade of MCCB: D-economical type,with overload release on N pole, which making all time, not closing and opening with the other three poles;N-standard type; H-high breaking capacity type; L-highest breaking capacity type.

Type

Rated Cureent(A)

Pole No.

Rated Insultating Voltage (V)

Rated Opreating Voltage (V)

Arcing Over Distance (mm)

Ultimate Short Circuit Breaking Capacity (KA)

Servies Short Circuit Breaking Capacity (KA)

Operation performance

ON

OFF

MSM2-100D

12.5,16,20,
25,32,40,50,
63.80,100

3P,4P

950

under690V

0

18

18

1500

8500

MSM2-100N

25

25

MSM2-100H

70

70

MSM2-100L

150

150

MSM2-160D

16,20,25,32,
40,50,63,80,
100,125,160

25

25

1000

7000

MSM2-160N

36

36

MSM2-160H

70

70

MSM2-160L

150

150

MSM2-250D

160,180,
200,225,250

35

35

1000

7000

MSM2-250N

45

45

MSM2-250H

70

70

MSM2-250L

150

150

MSM2-400D

200,225,
250,300,
315,400

35

35

1000

4000

MSM2-400N

45

45

MSM2-400H

70

70

MSM2-400L

150

150

MSM2-630D

315,350,
400,500,
600,630

35

35

1000

4000

MSM2-630N

45

45

MSM2-630H

70

70

MSM2-630L

150

150

 

Trip charactristic of MCCB

The thermodynamic release of the breaker has the advantages of inverse time-delay while theinstantaneous operation as shown on table 1 (distribation circuit breaker) and table 2 (notorprotection circuit breaker).

Rate current of release(A)

Thermodynamc release (ambient temp +40?)

Operational current of magnetic release(A)

1.05in (cold state) inoperative time (h)

1.30in (heat state) operative time (h)

in=63

=1

<1

10IN 20%

63<in=100

=2

<2

10IN 20%

100<in=630

=2

<2

5-10IN 20%

 

Rate current of release(A)

Thermodynamc release (ambient temp +40?)

Operational current of magnetic release(A)

1.0in (cold state)inoperative time (h)

1.20 in (heat state) operative time (h)

1.50 in (heat state) operative time (h)

7.2 in (cold state) oprative time (h)

12.5=in=400

=2

<2

=4min

2s<Tp=10s

12IN 20%

Outline and installation dimensions

Installation about HM2-100~HM2-630



Mounting on the back panel



Installation on the guide track

MM

C

C1

C2

C3

C6

C7

C20

C21

G

G1

G4

MSM2 100/160/250D/N/H/L

29

76

54

108

43

104

34

86

62.5

125

70

MSM2 400/630D/N/H/L

415

116

92.7

184

53

146

46.5

126

100

200

113.5

 

MM

G5

H

H1

H2

H3

H4

H5

H6

H7

K

K1

MSM2 100/160/250D/N/H/L

140

80.5

161

94

188

160.5

321

178.5

357

17.5

35

MSM2 400/630D/N/H/L

227

127.5

255

142.5

285

240

480

237

474

22.5

45

 

MM

R2

R4

R5

R6

R7

R12

R13

T

T4

(Ue)

MSM2 100/160/250D/N/H/L

54

108

143

29

58

43

86

6

22

=32

MSM2 400/630D/N/H/L

71.5

143

188

46.5

93

63

126

6

32

=32

Used in fixed or plug-in MCCB


Models  system

Model combined system of HM2-100 D/N/H/L~HM2-250 D/N/H/L type
1. breaking unit
2. trip unit
3. vigi ground connection trouble protecting mode
l4. insulating supervised model
5. electrified indicator model
6. current meter model
7. voltage trip coil MN or MX
8. many function supplementary switch
9. directly revolving handle
10. extended revolving handle
11. motor-driven operating mechanism
12. plug-in plate
13. plug-in and take-out type joint machine
14. joint accessories
15. short terminal cover
16. long terminal cover

 

  

 


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