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104
Technical advice
Circuit breakers for direct
current applications (cont.)
24 V - 48 V direct current applications
Total discrimination: 20 kA
Upstream
Curve C Time constant (L/R) = 15 ms
iC60H
C120H
NS
In (A)
10 - 16 20 - 25 32
40
50 - 63 80
100
125
u
100
Downstream
iC60H
Curves B,C
y
3
T
T
T
T
T
T
T
T
T
4
T
T
T
T
T
T
T
T
6
T
T
T
T
T
T
10
T
T
T
T
13
T
T
T
T
16 to 25
T
T
T
T
32
T
T
T
40
T
T
50 - 63
T
T
Total discrimination: 36 kA
Upstream
Curve C Time constant (L/R) = 15 ms
NG125H NS
In (A)
80
u
100
Downstream
NG125H
Curves B,C
10
T
T
16 to 63
T
Total discrimination: 50 kA
Upstream
Curve C Time constant (L/R) = 15 ms
NG125L
NS
In (A)
80
u
100
Downstream
NG125L
Curves B,C
10
T
T
16 to 63
T
T
Total discrimination.
No discrimination.