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BETA Protecting
Miniature Circuit Breakers
Configuration
1/59
Siemens ET B1 · 10/2008
1
*
You can order this quantity or a multiple thereof.
Tripping characteristics
Tripping characteristics at an ambient temperature of 30 °C
Correction factors for rated current at different ambient temperatures
Dependence of permissible continuous load current on
ambient temperature.
Curve for correction factor (for curves, see the diagram above)
Tripping
characteristic
Standards
Thermal trips
Electromagnetic trips
Test currents:
Test currents:
Limiting
Minimum
Tripping time
Hold
Latest
Tripping time
Test current
Test current
I
n
63
A
I
n
> 63 A
Tripping instant
I
1
I
2
t
t
I
4
I
5
t
A
1.13
×
I
n
> 1 h
> 2 h
2
×
I
n
0.1
s
1.45
×
I
n
< 1 h
< 2 h
3
×
I
n
< 0.1 s
B
IEC/EN 60898,
1.13
×
I
n
> 1 h
> 2 h
3
×
I
n
0.1
s
DIN VDE 0641-11
1.45
×
I
n
< 1 h
< 2 h
5
×
I
n
< 0.1 s
C
1.13
×
I
n
> 1 h
> 2 h
5
×
I
n
0.1
s
1.45
×
I
n
< 1 h
< 2 h
10
×
I
n
< 0.1 s
D
1.13
×
I
n
> 1 h
> 2 h
10
×
I
n
0.1
s
1.45
×
I
n
< 1 h
< 2 h
20
×
I
n
< 0.1 s
(
IEC 60898: 50 ×
I
n
)
Rated current (A)
0.3 0.5 1
1.6 2
3 4
6
8 10 13 16 20 25 32 40 50 63
Characteristic
Pole
type
A
1
P/2P 3
3 2
2 2
3 3
3
2 3
2 2
3 2
2 3
2 3
3
P/4P 2
2 2
1 2
2 2
2
2 2
1 1
2 1
1 1
1 2
B
1
P/2P --
--
--
--
--
--
--
3
--
3
2 2
3 3
2 3
2 3
3
P/4P --
--
--
--
--
--
--
2
--
2
1 2
2 1
1 1
1 1
C
1
P/2P 3
3 2
2 2
3 3
3
3 3
2 3
3 2
2 3
2 3
3
P/4P 2
2 2
1 2
2 2
2
3 3
2 2
2 2
1 1
1 2
D
1
P/2P 3
3 2
2 2
3 3
3
3 3
2 3
3 2
2 3
2 3
3
P/4P 2
2 2
1 2
2 2
2
3 3
2 2
2 2
2 2
1 2
I2_13659
-20 -10 0
20
10
40
30
50
Curve 1
Curve 2
Curve 3
Ambient Temperature [°C]
Reduction Factor
0.8
0.9
1.0
1.1
1.2
1.3
© Siemens AG 2008