User Guide

3RT1 contactors/ 3RH1 control relays
SIRIUS System Manual
3-32 GWA 4NEB 430 0999-02 DS 01
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
Fig. 3-13: 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
3.2.4.4 Ambient temperature
General information The 3RT10 contactors are designed for use with an ambient temperature of
-25 °C to +60 °C. Special designs are available to be used at -35 °C to
+70 °C.
Use at higher ambient
temperatures
The use of contactors in frame sizes S00 to S3 at higher ambient tempera-
tures is possible when different limitations are taken into consideration.
Short time operation at
T
U
≤ 80 °C
For the duration of 1 hour the contactor may be used up to a maximum
ambient temperature of Tu ≤ 80 °C without derating the rated current. How-
ever, this requires that an average 24 hour mean ambient temperature of
Tu ≤ 60 °C is not exceeded.
Limitation:
Contactors that contain electronic components or are combined with elec-
tronic accessories (for example integrated surge suppressor, electronic
interface,...) may only be used up to a max. ambient temperature of Tu
≤ 60 °C.
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
I
a
I
e
= breaking current
= rated operational current