SIEMENS
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Siemens IC 10 · 2017
Power Contactors for Switching Motors
SIRIUS 3RT contactors, 3-pole up to 250 kW
3
Contactors with screw terminals: 3RT2 (sizes S00 to S3) and 3RT1 (sizes S6 to S12)
3RT contactors, sizes S00 to S12
Our power range:
•
Contactors for switching motors:
- Size S00: 3RT201 up to 7.5 kW
- Size S0: 3RT202 up to 18.5 kW
- Size S2: 3RT203 up to 37 kW
- Size S3: 3RT204 up to 55 kW
- Sizes S6 to S12: 3RT10 up to 250 kW
•
For vacuum contactors for switching motors,
see page 3/124 onwards
:
- Sizes S10 and S12: 3RT12 up to 250 kW
- Size 14: 3TF6 up to 450 kW
Standards
IEC 60947-1, EN 60947-1,
IEC 60947-4-1, EN 60947-4-1,
IEC 60947-5-1, EN 60947-5-1 (auxiliary switches)
3RT contactors
The 3RT contactors are climate-proof and are suitable and
tested for use worldwide.
If the devices are used in ambient conditions which deviate from
common industrial conditions (IEC 60721-3-3 "Stationary Use,
Weather-Protected"), information must be obtained about possi-
ble restrictions with regard to the reliability and endurance of the
device and possible protective measures. In this case contact
our Technical Assistance,
Tel.: +49 (911) 895-5900
E-mail:
technical-assistance@siemens.com
Auxiliary contact complement
•
Size S00: an auxiliary contact is integrated in the basic device.
•
Sizes S0 to S3: the basic units contain two integrated auxiliary
contacts (1 NO + 1 NC).
All basic units, with the exception of coupling relays, can be
expanded using auxiliary switch blocks;
see page
3/87 for the
permitted selection of auxiliary switches
.
•
Sizes S6 to S12: These contactors are supplied with two
laterally mounted auxiliary switch blocks. The fitting of
auxiliary switches is possible on the front and on the side
(the 3RT12 vacuum contactor is an exception: only lateral
fitting of auxiliary switches is possible here).
For detailed information about fitting of auxiliary switches,
see
pages 3/87 to 3/92
.
Contact reliability
If voltages
110 V and currents
100 mA are to be switched,
the auxiliary contacts of the 3RT contactors or 3RH contactor
relays should be used as they guarantee a high level of contact
reliability.
These auxiliary contacts are particularly suitable for solid-state
circuits with currents
1 mA at a voltage
17 V.
Connection methods
Main circuit
•
Sizes S00 and S0: screw or spring-type terminals, spring-type
terminals with convenient plug-in design for device
connectors
•
Size S2: Screw terminals
•
Sizes S3 to S12: screw terminals with or without box terminal;
with the box terminal removed: connection with busbar or
cable lugs on the device connecting bar possible
Auxiliary circuit
•
Sizes S00 to S12: Screw or spring-type terminals
© Siemens AG 2016