102 / 425
2/4 line protection
ABB Low Voltage Industrial Products 0312
2
1) The indicated tripping values of electromagnetic tripping devices apply to a
frequency range of 16 2/3...60 Hz. In the case of diverging frequencies or direct
current, see paragraph “Variation of tripping threshold of MCBs, according to
network frequency” (page 6/7)
IEC-EN60898
Z,KscitsiretcarahC
D,C,BscitsiretcarahC
Tripping characteristics
esaelerlamrehT
2)
Electromagnetic release
1)
Acc. to
Tripping characteristic
Current:
Tripping time
Currents:
Tripping time
pirt
dloh
lanoitnevnoc lanoitnevnoc
tnerrucdetardna
tatsaelta
tnerruc
.cgnippirt .cgnippirt-non
segrus
IEC/EN 60898
B
6 to 63 A
1.13 · I
n
> 1 h
3 · I
n
> 0.1 s
I·54.1
n
< 1 h
5 · I
n
< 0.1 s
C
0.5 to 63 A
1.13 · I
n
> 1 h
5 · I
n
> 0.1 s
I·54.1
n
< 1 h
10 · I
n
< 0.1 s
D
0.5 to 63 A
1.13 · I
n
> 1 h
10 · I
n
> 0.1 s
I·54.1
n
< 1 h
20 · I
n
< 0.1 s
DIN VDE 0660/9.82
K
0.5 to 63 A
1.05 · I
n
> 1 h
I·2.1
n
< 1 h
not applicable
IEC/EN 60947-2
1.05 · I
n
> 2 h
10 · I
n
> 0.2 s
DIN VDE 0660
1.2 · I
n
< 1 h
3)
14 · I
n
< 0.2 s
8/69
1.5 · I
n
< 2 min.
3)
Part 101
6.0 · I
n
> 2 s (T1)
DIN VDE 0660/9.82
Z
0.5 to 63 A
1.05 · I
n
> 1 h
I·2.1
n
< 1 h
not applicable
IEC/EN 60947-2
1.05 · I
n
> 2 h
2 · I
n
> 0.2 s
DIN VDE 0660
1.2 · I
n
< 1 h
3)
3 · I
n
< 0.2 s
8/69
1.5 · I
n
< 2 min.
3)
Part 101
6.0 · I
n
> 2 s (T1)
2) The thermal releases are calibrated to a nominal reference ambient temperature;
for Z and K, the value is 20 °C, for B and C = 30 °C. In the case of higher ambient
temperatures, the current values fall by ca. 6 % for each 10 K temperature rise.
3) As from operating temperature (after I
1
> 1 h or, as applicable, 2 h).
IEC-EN60947-2
Installation equipment
Tripping characteristics