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 , Moulded case breaker >> HM1(CM1) SERIES

HM1(CM1) Series Moulded Case Circuit Breakers

Product Features
HM1 series of moulded case circuit breaker is one of our new type products developed and manufactured by adopting international advanced technology. It is supplied with rated insulating voltage 800V and used for circuit of A.C.50Hz, rated operating voltage AC 400V.(or below), rated operating current up to 800A for infrequent over and starting of the motors. Equipment with the protection devices for over-current, short circuit and undervoltage, the products are capable of preventing damage of circuits and supply units. The products conforms to GB14048.2, IEC60497-2 standards .
Type and meanings
Note: * No code for sistribution breakers; "2" represents motor protection circuit breakers
         * No code for direct handle operation;"P" represents electrical operation ,and "Z" represents            rotary-   operated- handles.
         * Rated breaking capacity grade of MCCB, C-economical type,with current trip-release on N pole which closing            and opening with the other three poles; L-stardand type, M-middle high breaking capacity type, H-high            breaking capacity type.
Classificatipn of MCCB
According to product poles,two kinds of three-pole and four pole are provided. The neutral pole (N pole) of four pole four pole has four types:
Type A: Np current trip-release on N pole which making all the time ;not closing and opening with the other three poles
Type B: No current trip-release on N pole which closing with the other three poles.
Type C: With current trip-release on N pole which and opening with the other three poles
Ypee D: With current trip-release on N pole which making all the time ;not closing and opening with the other tree poles.

Main technical specifications

Type
Rated current (A)
Pole No.
Rated insulating voltage (V)
Rated operating voltage (V)
Arcing-over distance (mm)
Ultimate short circuit breaking capacity (KA)
Servies short circuit breaking capacity (KA)
Operation
performance
On
Off
HM1-63L
6,10, 16, 20, 25, 32, 40, 50, 63
3P,4P
660V
380V
0
25
18
1500
8500
HM1-63M
0
50
35
HM1-100C
10, 16, 20, 25, 32, 40, 50, 63, 80, 100
0
25
18
HM1-100L
0(+ 50)
35
22
HM1-100M
0(+ 50)
50
35
HM1-100H
0(+ 50)
85
50
HM1-225C
100, 125, 160, 180, 200, 225
+ 50
25
18
1000
7000
HM1-225L
+ 50
35
22
HM1-225M
+ 50
50
35
HM1-225H
+ 50
85
50
HM1-400C
225, 250, 315, 350, 400
+ 50
35
25
1000
4000
HM1-400L
+ 50
50
35
HM1-400M
+ 100
65
42
HM1-630C
400, 500, 630
+ 100
35
25
HM1-630L
+ 100
50
35
HM1-630M
+ 100
65
42
HM1-630H
+ 100
100
65
HM1-800M
630, 700, 800
+ 100
65
42
HM1-800H
+ 100
100
65
Protection characteristic
The thermodynamic release of a circuit breaker provides the feature of inverse time-delay, while the magnetic release is the instantaneous operation as shown on table 2(distribution circuit breaker) and table 3 (motor protection circuit breakers).
Table 2
Rated current of release(A)

Thermodynamic Release
(ambient templand +40≧ marine +45≧)

Operational current of
magnetic release(A)
1.05In(cold state)
inoperative time(h)
1.30In(heat state)
operative time(h)
10+ In+ 63
− 1
< 1
10In\20%
63+ In+ 100
− 2
< 2
10In\20%
5In\20%
100+ In+ 800
− 2
< 2
Table 3
Rated current of release(A)

Thermodynamic Release
(ambient templand +40≧ marine +45≧)

Operational current of
magnetic release(A)
1.0In(cold state)
inoperative time(h)
1.20In(heat state)
operative time(h)
1.50In(heat state)
operative time(h)
7.2In(cold state)
operative time(h)
10+In + 225
− 2
< 2
4min
4s<Tp+ 10s
12In\20%
225<In+ 400
6s<Tp+ 20s
Working environment
1. Altitude +2000m.
2. Ambient temperature:+40≧(+45≧ for ships )~-5≧.
3. Resistance to moisture.
4. Resistance to salt spry and oil spary
5. Resistance to mould.
6. Resistance to nuclear radiation.
7. Maximum salant:\22.5<.
8. Reliable work under earthquake condition(4g).
9. Ambient environment freeing from exqlosive danger and air or dust which may cause corrosion of metal or weakness of insulation.
10.Ambient environment freeing from erosio of rain or snow.

Outline and installation dimensions

Front panel connection

Back pqnel connection picture

Back panel connection

Plug-in connection

 

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