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 , Moulded case breaker >> HM2(NS)

HM2(NS) Series Moulded Case Circuit Breakers

Product Features
HM2(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
#8226;   Installation type of MCCB: MCCB are suiable for vertical or harizontal installation.
#8226;  According to use of MCCB: distribution circuit protection type, motor protection type;
#8226;  According to connection way : front panel connection, back panel connection plug-in connection ;
#8226;  According to operation way: for direct handle operation for external rotary handle operating, formotor operating;
#8226;  According to overload release type: magnetic release (only instantaneous) the modynamicmagnetic type (dual), electronical release;
#8226;  According to number of poles: two poles, there poles, four poles.
#8226;  The neutral poles (N poles) of four poles MCCB has for types:
#8226;  Type A: no overload release on N pole, which is making at the time ; not closing and openingwith the other three poles.
#8226;  Type B: no overload release on N pole, which closing and opening with the other three poles.
#8226;  Type C: with overload release on N pole, which closing and opening with the other three poles.
#8226;  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
HM2-100D
12.5,16,20,
25,32,40,50,
63.80,100
3P,4P
950
under690V
0
18
18
1500
8500
HM2-100N
25
25
HM2-100H
70
70
HM2-100L
150
150
HM2-160D
16,20,25,32,
40,50,63,80,
100,125,160
25
25
1000
7000
HM2-160N
36
36
HM2-160H
70
70
HM2-160L
150
150
HM2-250D
160,180,
200,225,250
35
35
1000
7000
HM2-250N
45
45
HM2-250H
70
70
HM2-250L
150
150
HM2-400D
200,225,
250,300,
315,400
35
35
1000
4000
HM2-400N
45
45
HM2-400H
70
70
HM2-400L
150
150
HM2-630D
315,350,
400,500,
600,630
35
35
1000
4000
HM2-630N
45
45
HM2-630H
70
70
HM2-630L
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
HM2 100/160/250D/N/H/L
29
76
54
108
43
104
34
86
62.5
125
70
HM2 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
HM2 100/160/250D/N/H/L
140
80.5
161
94
188
160.5
321
178.5
357
17.5
35
HM2 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)
HM2 100/160/250D/N/H/L
54
108
143
29
58
43
86
6
22
+32
HM2 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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