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BETA Protecting
Miniature Circuit Breakers
Configuration
1/75
Siemens ET B1 · 10/2008
1
*
You can order this quantity or a multiple thereof.
Selectivity for miniature circuit breakers/circuit breakers
In the event of a short-circuit, there is selectivity between miniature
circuit breakers and motor starter protectors according to IEC/EN
60947-2
or VDE 0660-101 up to the specified values in kA.
Limit values of selectivity for miniature circuit breakers/circuit breakers in kA
Values for 5SY8 on request.
T
r
full selectivity up to rated breaking capacity
I
cn
of the downstream protective device.
1)
In 240/415 V, 50 Hz systems, the selectivity limits are reduced by 10 %.
The selectivity limits for adjustable releases apply to the maximum value,
I
n
= rated current.
I
>
r
tripping current.
Downstream miniature
circuit breakers
Upstream circuit breakers
3
VL3, TM
3
VL4, TM
3
VL6,
ETU
3
VL7.
ETU
3
VL8,
ETU
3
WN1 3WN6
I
n
[
A]
200
250
200
250
315
400
315
400 ...
400 ...
800 ...
315 ...
315 ...
800
1250 2500 6300 3200
I
>[A]
2000 2500 2000 2500 3150 4000 3200 1575 ... 15000 20000 3780 ... 3780 ...
6400
75600 48000
I
cn
[
kA] 40 ... 100 40 ... 100 45 ... 100 45 ... 100 45 ... 100 45 ... 100 45 ... 100 45 ... 100 50 ... 100 70/100 65 ... 100 65/75
Selectivity limits [kA]
1)
5
SY6, 5SY4, 5SY7
Characteristic A
2
6 10
T
T
T
T
T
T
T
T
T
T
T
T
10
30 10
T
T
T
T
T
T
T
T
T
T
T
T
16
48 10
T
T
T
T
T
T
T
T
T
T
T
T
32
96 10
T
T
T
T
T
T
T
T
T
T
T
T
40 120 10
T
T
T
T
T
T
T
T
T
T
T
T
Characteristic B
6
30 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
10
50 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
13
65 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
16
80 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
20 100 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
25 125 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
32 160 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
40 200 6/10/15 6
6
6
T
T
T
T
T
T
T
T
T
50 250 6/10/15 6
6
6/10/
14.1
T
T
T
T
T
T
T
T
T
Characteristic C
0.5
5 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
1
10 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
1.5 15 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
2
20 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
3
30 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
4
40 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
6
60 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
8
80 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
10 100 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
13 130 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
16 160 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
20 200 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
25 250 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
32 320 6/10/15 6/10/11
T
T
T
T
T
T
T
T
T
T
T
40 400 6/10/15 6/10
T
T
T
T
T
T
T
T
T
T
T
50 500 6/10/15 6/10
T
T
T
T
T
T
6/10/
14.2
T
T
T
T
Characteristic D
2
40 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
6 120 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
10 200 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
16 320 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
32 640 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
40 800 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
50 1000 6/10/15
T
T
T
T
T
T
T
T
T
T
T
T
5
SP4
Characteristic C
80 800 10
3
3
3
3
3
6
8
T
T
T
T
T
100 1000 10
3
3
3
3
3
5
6
T
T
T
T
T
Characteristic D
80 1600 10
3
3
2.5
3
3
5
6
T
T
T
T
T
100 2000 10
--
2.5
--
3
3
5
6
T
T
T
T
T
© Siemens AG 2008