202 / 267
3VT4 Molded Case Circuit Breakers up to 1000 A
Overcurrent releases
5/16
Siemens LV 36 · 2008
5
Tripping characteristics ETU UP
NSO0_00382
x
I
n
1 2
5
20
50
10
0.2 0.5
I
n
= 315 A
I
n
= 630 A
I
n
= 800 A
I
n
= 1000 A
I
n
= 315 A
I
n
= 630 A
I
n
= 800 A
I
n
= 1000 A
L
S
I
I
r
t
r
I
sd
t
v
I
i
0.02
0.02
0.02
0.05
0.05
0.05
0.01
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
0.1
0.2
0.5
1
2
5
0.1
25
3
3
25
1000
50
50
50
50
5.0 4.0 3.0 2.5 2.0 1.5
1.0
0.5
1.5
0.8
1.0
2.0
1.25
10 8.0 6.0
4.0 3.0
2.0 1.5
12 9.0
6.0
4.0 3.0
2.0
12 9.0
5.0 7.0
3.0
14
I
sd
= (2 … 10) x
I
r min
I
sd
= (2 … 10) x
I
r max
t
v
[ms]
(
I
2
t
= OFF)
t
r
[s]
I
r
min.
max.
I
i
[kA]
I
i
[kA]
I
i
[kA]
I
i
[kA]
NSO0_00383
x
I
n
1 2
5
20
50
10
0.2 0.5
I
n
= 315 A
I
n
= 630 A
I
n
= 800 A
I
n
= 1000 A
I
n
= 315 A
I
n
= 630 A
I
n
= 800 A
I
n
= 1000 A
L
S
I
I
r
t
r
I
sd
t
v
I
i
0.02
0.02
0.02
0.05
0.05
0.05
0.01
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
0.1
0.2
0.5
1
2
5
0.1
25
3
3
25
1000
50
50
50
50
5.0 4.0 3.0 2.5 2.0 1.5
1.0
0.5
1.5
0.8
1.0
2.0
1.25
10 8.0 6.0
4.0 3.0
2.0 1.5
12 9.0
6.0
4.0 3.0
2.0
12 9.0
5.0 7.0
3.0
14
I
sd
= (2 … 10) x
I
r min
I
sd
= (2 … 10) x
I
r max
t
r
[s]
t
v
[ms]
(
I
2
t
= ON)
I
i
[kA]
I
i
[kA]
I
i
[kA]
I
i
[kA]
I
r
min.
max.
7