YCM2 Moulded Case Circuit Breaker
Application
YCM2 series moulded case circuit breaker, is suitable for the circuit of AC 50Hz (or60Hz),rated insulation Voltage 660V, rated operating Voltage under AC 660V, 250V(DC),rated operating current 10A-800A. It is for distributing energy of electricity and infrequent making and circuit under normal conditions. The MCCB rated current under 400A.
They are provided with the function of the protection against overload and short circuit and undervoltage. The MCCB complies with standard of IEC60947-2.
1.Tripping Characterisics
Table 1
Rated Current of release(A) Thermodynamic Release(ambient temp+40C Operational Current of Magnetic Release(A)
1.05In(cold state) inoperative time(h) 1.30In(heat state) inoperative time(h)
In63
1
1
10-50In20%
63<In250
2
2
10In20%
25<In800
2
2
5-10In20%
Table 2
Rate Current of release(A)
Thermodynamic Release (ambient temp+40C
Operational Current of Magnetic Release(A)
1.0In(cold state) inoperative time(h)
1.20In(heat state) inoperative time(h)
1.50In(heat state)inoperative time(h)
1.01In(cold state) inoperative time(h)
12.5<In400
2
<2
<4min
2S<Tp10S
12In20%
2.Main Technical specifications
Table 3
Type
Rated current (A)
Pole number
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 (Endurance)
 
Overall dimensions
YCM2-125E

12.5,16,20,25,32,

40,50,63,80,100,125

2,3,4
660
380,660
30
15
-
-
7.5
3000
7000
120

 

76/101

 

70

YCM2-125S
25
-
20
16
YCM2-160S

16,20,32,40,50,

63,80,100,125,160

0
35
8
20
18
4000
6000
120
90/120
70
YCM2-160H
50
10
40
25
YCM2-250S

100,125,160,180,

200,225,250

35
10
40
18
2000
6000
170
105/140
103.5
YCM2-250M
50
16
40
30
YCM2-250H
65
18
40
48
YCM2-400S

200,225,250,315,

350,400

35
16
40
18
1000
4000
254
140/184
103.5
YCM2-400M
50
20
40
30
YCM2-400H
65
25
40
48
YCM2-630S
400,500,630
50
20
40
30
1000
4000
268
210/280
103.5
YCM2-630M
65
25
40
48
YCM2-630H
80
30
40
60
YCM2-800S
500,630,700,800
50
20
40
30
1000
4000
268
210/280
103.5
YCM2-800M
65
25
40
48
YCM2-800H
80
30
40
60

  
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