Siemens SIRIUS - Figure 3-7: Characteristic Curve of the Electrical Service Life of the Auxiliary Contacts

3RT1/3RH1 contactors
SIRIUS System Manual
GWA 4NEB 430 0999-02b
3-19
Characteristic curve:
contact service life of
the auxiliary contacts
The contact service life depends on the breaking current. The prerequisites
are arbitrary (i.e. not synchronous with the phase relation of the control sta-
tion operating the network).
The characteristic curves apply to:
• Integrated 3RT10 auxiliary contacts
• 3RH1911 auxiliary switch blocks for contactors in frame size S00
• 3RH1921 auxiliary switch blocks for contactors in frame sizes S0 to S3
Figure 3-7: Characteristic curve of the electrical service life of the auxiliary contacts
1) DC-13: built-on auxiliary switch blocks for frame size S00: 6 A
I
a
I
e
= breaking current
= rated operational current
I
II
e
e
DC-13
220 V
DC-13
110 V
DC-13
24 V
I
e
I
e
NSB00472
1)
AC-15/AC-14
30
10
5
4
3
2
1
0,5
0,1
0,05
0,01
0,01 0,03 0,05 0,1 0,3 0,5 1 2 3 5 6 7 10
a
(A)
DC-13
220 V
DC-13
110 V
AC-15
< 230 V
DC-13
24 V
Basic unit with
attachable
contact block
Basic unit
Operating cycles in millions (10 )
6