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MCCB:HM1 Moulded Case Circuit Breaker [Hits:418] 
HM1 Moulded Case Circuit Breaker

 
Application
 
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 660V and used for circuit of A.C.50Hz, rated
operating voltage AC 380V. (Or below), rated operating current up to 800A for infrequent changing over and starting of the motors. Equipped with the protection devices for over-current, short circuit and under voltage, the products are capable
of preventing damage of circuits and supply units.
 
Classification
 
Accord to product poles. Two kings of three-pole are provided  The neutral pole(N pole) of four poles has four types
 
Specifications
 
Type
Rated current
of trip (In A)
Pole
number
Rated insulating
voltage (V)
Rated operating
distance (mm)
Arcing-over
distance (mm)
Uitimate short
circuit breakering
capacity (kA)
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
1000
8500
HM1-63M
0 50
35
HM1-100C
0 25
18
HM1-100L
10,16,20,25
32,40,50,63
80,100
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
≤100
35
25
HM1-630L
400,500,600
≤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 Characteristics
 
The thermodynamic release of a circuit breaker provides the feature of inverse time delay, while the magnetic release is the instantaneous operation as show on table 2 (distribution circuit-breaker) and table 3 (motor protection circuit breakers).
 
Working Conditions
 
Rated current
of release(A)

Thermodynamic release(ambient temp
1and+40℃
marine+45℃
)
Operational current of
magnetic release(A)
1.05In(cold state)inoperation time(h) 1.30In(heat state) operative time(h)
10≤In≤63
≥1
< 1
10In±20%
63≤In≤100
≥2
< 2
100≤In≤630
≥2
< 2
10In±20%、5-10In±20%
 
 
 
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