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Fig. 40
Example – 3AH47 vacuum circuit-breaker rating plate
Rated voltage U
r
Rated operating current I
Rated lightning impulse withstand
voltage (peak value) U
p
Rated power frequency withstand
voltage (effective value) U
Rated short-circuit breaking currentI
Rated frequency
Rated operating sequence
Mechanical operating cycle in
thousands
9229 9947 176 0C
2013-03-28
Rating plate
Technical data
kV
A
2000
r
kV
kV
d
25 /
kA
sc
31.5
Hz
60
A
O - 3 min - CO - 3 min - CO
B
O - 5 s - CO
C
O - 0.8 s - CO - 30 s - CO
*
one-pole
**
two-pole
Fig. 41
Technical Data
Dimensions and weights
The dimensions of the vacuum circuit-breaker can be taken from the relevant
dimension drawing. If required, these are available from your Siemens
representative.
The weight is given on the rating plate of the vacuum circuit-breaker (see Fig. 40) or
can be taken from the relevant dimension drawing.
17.5*
2500
1250, 2000, 2500
125
170
185
50
70
85
25 /
40 / 50
40
31.5
16.7
A, B
C
20
60
Description
a
Manufacturer
b
Type designation
c
Works serial number
d
Rated voltage U r
e
Rated frequency f r
Rated short-circuit breaking
current I sc
g
Rated power frequency withstand
voltage U d
h
Rated lightning impulse withstand
voltage U p
i
Quality control seal
k
Year of manufacture
m Rated operating current I r
n
Rated short-circuit duration t k
o
Mass m
p
Rated operating sequence
r
Classification to standard
27.5*
27.5**
1250, 2000, 2500
250
200
185
105
95
85
25 /
25
25 / 31.5
31.5
50/60
A
20
60
200
95
31
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