■
Breaking Characteristics
The breaking characteristics (*1) of distribution board circuit protectors must be equivalent to or slower than
D (IEC898), which is shown in Figure 1.13.
*1: Relationship between the size of excess current and operation time
Figure 1.13 Breaking Characteristics of Distribution Board Circuit Protectors
Operation time
0.01
0.02
0.04
0.06
0.1
0.2
0.4
0.6
1
2
4
6
10
20
40
1
2
4
6
10
20
40
60
120
180
1 1.5 2 3 4 5 6 7 8 10 15 20 30 40 50 80 100
Current (ratio for the current rating)
DC
B
~
Minutes
Seconds
~~
Chapter 1 ETERNUS DX Installation
1.7 Outlet/Socket Specifications
32
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