SIEMENS
3/47
Siemens IC 10 · 2017
Power Contactors for Switching Motors
SIRIUS 3RT contactors, 3-pole up to 250 kW
3
1)
Dependence of the switching frequency
z’
on
the operational current
I
’
and operational voltage
U
’:
z’
=
z
(
I
e
/
I
’
)
(
U
e
/
U
’)
1.5
1/h.
Type
3RT1054
3RT1055
3RT1056
3RT1064
3RT1065
3RT1066
3RT1075
3RT1076
Size
S6
S10
S12
Rated data of main contacts (continued)
Load rating with DC
Utilization category DC-1,
switching resistive loads (
L/R
1 ms)
• Rated operational currents
I
e
(at 60 °C)
-
1 conducting path
Up to 24 V
A
160
200
300
400
60 V
A
160
200
300
330
110 V
A
18
33
220 V
A
3.4
3.8
440 V
A
0.8
0.9
600 V
A
0.5
0.6
-
2 conducting paths in series
Up to 24 V
A
160
200
300
400
60 V
A
160
200
300
400
110 V
A
160
200
300
400
220 V
A
20
300
400
440 V
A
3.2
4
600 V
A
1.6
2
-
3 conducting paths in series
Up to 24 V
A
160
200
300
400
60 V
A
160
200
300
400
110 V
A
160
200
300
400
220 V
A
160
200
300
400
440 V
A
11.5
11
600 V
A
4
5.2
Utilization category DC-3/DC-5,
shunt-wound and series-wound motors (
L/R
15 ms)
• Rated operational currents
I
e
(at 60 °C)
-
1 conducting path
Up to 24 V
A
160
200
300
400
60 V
A
7.5
11
110 V
A
2.5
3
220 V
A
0.6
440 V
A
0.17
0.18
600 V
A
0.12
0.125
-
2 conducting paths in series
Up to 24 V
A
160
200
300
400
60 V
A
160
200
300
400
110 V
A
160
200
300
400
220 V
A
2.5
440 V
A
0.65
600 V
A
0.37
-
3 conducting paths in series
Up to 24 V
A
160
200
300
400
60 V
A
160
200
300
400
110 V
A
160
200
300
400
220 V
A
160
200
300
400
440 V
A
1.4
600 V
A
0.75
Switching frequency
Switching frequency
z
in operating cycles/hour
Contactors without overload relays
• No-load switching frequency
h
-1
2 000
-
Reduced in the case of contactors with solid-state
operating mechanism at
U
s
= 21 ... 27.3 V AC/DC
h
-1
1 000
AC-1 values
• Switching frequency
z
during rated operation
1)
-
I
e
/AC-1
At 400 V
h
-1
800
750
800
750
700
500
-
I
e
/AC-2
At 400 V
h
-1
400
300
250
300
250
200
170
-
I
e
/AC-3
At 400 V
h
-1
1 000
750
500
700
500
420
-
I
e
/AC-4
At 400 V
h
-1
130
Contactors with mounted overload relay
• Mean value
h
-1
60
© Siemens AG 2016