SIEMENS
3/40
Siemens IC 10 · 2017
Power Contactors for Switching Motors
SIRIUS 3RT contactors, 3-pole up to 250 kW
3
1)
Coil operating range
-
at 50 Hz: 0.8
to 1.1 x
U
s
-
at 60 Hz: 0.85 to 1.1 x
U
s
.
2)
In the case of DC coils, increased starting currents (2.6 A on average)
occur during the first 200 ms. For direct control from a PLC, we recom-
mend special 3RT204.-.KB4. coupling contactors with adapted power
consumption, suitable for a PLC output current of 2 A
(see page 3/64)
.
3)
The OFF-delay of the NO contact and the ON-delay of the NC contact
are increased if the contactor coils are attenuated against voltage peaks
(varistor +2 ms to 5 ms, diode assembly: 2 to 6 times).
Contactors
Coupling contactors
Type
3RT204.-.A...
3RT204.-.N.3.
3RT204.-.KB4.
Size
S3
Control
Type of operating mechanism
AC
AC/DC
DC
Solenoid coil operating range
• AC operation
1)
0.8 ... 1.1 x
U
s
--
• AC/DC operation
1)
--
0.8 ... 1.1 x
U
s
--
• DC operation
--
0.8 ... 1.2 x
U
s
Power consumption of the solenoid coils
(for cold coil and 1.0 x
U
s
)
• AC operation, 50 Hz, standard version
- Closing
VA
296
--
--
- P.f.
0.61
--
--
- Closed
VA
19
--
--
- P.f.
0.38
--
--
• AC operation, 50/60 Hz, standard version
- Closing
VA
348/296
--
--
- P.f.
0.62/0.55
--
--
- Closed
VA
25/18
--
--
- P.f.
0.35/0.41
--
--
• AC operation, 50/60 Hz, for USA/Canada
- Closing
VA
326/326
--
--
- P.f.
0.62/0.55
--
--
- Closed
VA
22/22
--
--
- P.f.
0.38/0.4
--
--
• AC/DC operation
-
Closing for AC operation
VA
--
163
--
- P.f.
--
--
--
-
Closed for AC operation
VA
--
3.1
--
- P.f.
--
--
--
• DC operation
-
Closing for DC operation
W
--
76
2)
25
-
Closed for DC operation
W
--
1.8
0.9
Permissible residual current of the electronics
(with 0 signal)
• AC/DC operation
mA
--
< 20
--
• DC operation
mA
--
< 20
Overvoltage configuration of the solenoid coil
--
Built-in varistor
Built-in varistor
Operating times at 0.8 ... 1.2 x
U
s
3)
Total break time = Opening delay + Arcing time
• DC operation
-
Closing delay
ms
--
50 ... 70
-
Opening delay
ms
--
38 ... 57
Operating times at 1.0 x
U
s
3)
• AC operation
-
Closing delay
ms
15 ...25
50 ... 70
--
-
Opening delay
ms
11 ...20
38 ... 57
--
• DC operation
-
Closing delay
ms
--
50 ... 70
--
-
Opening delay
ms
--
38 ... 57
--
• Arcing time
ms
10 ... 20
U
U
© Siemens AG 2016