SIEMENS
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Siemens IC 10 · 2017
Power Contactors for Switching Motors
SIRIUS 3RT contactors, 3-pole up to 250 kW
3
1)
Industrial furnaces and electric heaters with resistance heating, etc.
(increased power consumption on heating up has been taken into
account).
Contactors
Type
3RT2045
3RT2046
3RT2047
Size
S3
Rated data of the main contacts
Load rating with AC
Utilization category AC-1,
switching resistive loads
• Rated operational current
I
e
At 40 °C up to 690 V
A
125
130
At 60 °C up to 690 V
A
105
110
• Rated power for AC loads
1)
P.f. = 0.95 (at 60 °C)
230 V
kW
40
42
400 V
kW
69
72
690 V
kW
119
125
• Minimum conductor cross-section
for loads with
I
e
At 40 °C
mm
2
50
At 60 °C
mm
2
35
Utilization categories AC-2 and AC-3
• Rated operational currents
I
e
Up to 400 V
A
80
95
110
500 V
A
80
95
110
690 V
A
58
78
98
1 000 V
A
30
• Rated power for slipring or squirrel-
cage motors at 50 and 60 Hz
At 230 V
kW
22
22
30
400 V
kW
37
45
55
690 V
kW
55
75
90
1 000 V
A
37
Thermal load capacity
10 s current
A
760
880
Power loss
per conducting path
At
I
e
/AC-3 W
5.3
6.6
7.9
Utilization category AC-4
(for
I
a
= 6 x
I
e
)
• Maximum values
-
Rated operational current
I
e
Up to 400 V
A
66
80
97
-
Rated power for squirrel-cage
motors with 50 Hz and 60 Hz
At 400 V
kW
37
45
55
• The following applies to a contact endurance
of about 200 000 operating cycles:
-
Rated operational currents
I
e
Up to 400 V
A
34
42
46
690 V
A
24
30
36
-
Rated power for squirrel-cage
motors with 50 Hz and 60 Hz
At 110 V
kW
4.9
6.1
6.7
230 V
kW
10.4
12
14
400 V
kW
17.9
22
24.3
690 V
kW
21.8
27.4
32.9
© Siemens AG 2016