Masterpact® circuit breaker
time current curves
ground-fault protection STR 38S - STR 58U
o.n 0:0 1'-- c:o 0)
1 1 2 1 5
2
0 0 0 0 0
0 .
. . .
100
90
80
70
60
50
40
0
0
0
0
0
0
30 0
200
1 0
9
8
7
0
0
0
0
0
50
40
0
0
10
9
8
7
6
5
4
3
1
9
8
7
6
5
.4
2
.09
08
07
06
. 0 5
04
.03
02
1
9
8
7
0
.00
.00
00
.006
.005
.004
.003
002
.00
12t
OFF
4
5 6 7 8 9 1 1 2 1 5
2
3
4
5 6 7 8 9 1 0
ground-fault pickup
lh
-
0.1
x In
...
1 200
A Max
4 .5 .6 .7 .8 .9 1
1.5
2
0.4
0.2
0.1
3
4
5 6 7 8 9 1 0
0
20
30 40 50 60 ° 0 0 0
1'-- <:0 ()) .-
20
30
40 50 6D R g gg
g
8 8
g g g g g
§
1.1) (0 1'- <Xl o:> .....
26
1 000
900
BOO
700
600
500
400
300
200
1 00
90
80
70
60
50
40
30
20
1 0
9
8
7
.1
09
08
07
06
05
04
03
02
01
009
008
007
006
005
004
003
002
001
MP101 3A.O
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