Siemens 3VT MCCBs Up To 1600A

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3VT2 Molded Case Circuit Breakers up to 250 A
Overcurrent releases
3/20 Siemens LV 36 · 2008
3
Tripping characteristics
NSO0_00220
x In
1 2 5 20 50 10 0.1 0.2 0.5
x In
1 2 5 20 50 10 0.1 0.2 0.5
0.02
0.02
0.05
0.05
0.01
0.01
20
200
2000
50
500
5000
10
100
1000
10000
t [s]
0.01
0.02
0.05
0.1
0.1
0.1
0.2
0.5
1
2
5
0.02
0.02
0.05
0.05
0.01
0.01
20
200
2000
50
500
5000
10
100
1000
10000
t [s]
0.01
0.02
0.05
0.1
0.1
0.1
0.2
0.5
1
2
5
20
10 10
3 3
1 1
20
1.5 1.25 1.0 0.8 0.6 0.4 0.25 0.125
0
2.4
2.5
2.0
2.0
1.6
1.5
1.3
1.25
1.0
1.0
0.6
0.75
0.4
0.5
0.2
0.35
0
0
50
50
50
1.5 1.25 1.0 0.8 0.6 0.4 0.25 0.125
0
2.4
2.5
2.0
2.0
1.6
1.5
1.3
1.25
1.0
1.0
0.6
0.75
0.4
0.5
0.2
0.35
0
0
50
50
50
TV
Ir tr 0 ms 50 ms
Ii
L L
I I
t r t r
In = 100 A
In = 100 A
In = 160 A
In = 250 A
In = 100 A
In = 160 A
In = 250 A
In = 160 A
In = 250 A Ii[kA]
Ii[kA]
Ii[kA]
Ii[kA]
Ii[kA]
Ii [kA]
M
Ir tr 0 ms 50 ms
Ii
In = 100 A
In = 160 A
In = 250 A
I r
min. max.
Ir
min. max.
20
15 15
3 3
8 8
20