Siemens SIRIUS 3RT - 8 Connection; Warning Notice

SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006
227
Connection
8
8.1
Warning notice
DANGER
Hazardous voltage. Will cause death or serious injury.
Turn off and lock out all power supplying this device before working on this device.
Connection systems
The SIRIUS contactors are available with the following connection types:
● Screw-type connection system
● Spring-loaded connection system
In size S2 to S12, the spring-loaded connection system is used only in the control circuit.
● Ring cable lug connection system
The ring cable lug connection system is not used in sizes S2 to S12.
● Solder pin connection (only possible for size S00, in conjunction with a solder pin
adapter)
Terminal designations
Terminal
Designation
A1
Coil terminal +
A2
Coil terminal -
L1, L2, L3
Contactor's main circuit terminal to the power network
T1, T2, T3
Contactor's main circuit terminal to the load/motor connection
13, 14
Auxiliary contact, closing
21, 22
Auxiliary contact, opening
The auxiliary/control contacts have a two-digit designation:
● First digit: Consecutive number of the auxiliary contacts (sequence number).
● Second digit: Task of the respective auxiliary contact (function number).
E. g. 1-2 for NC contacts or 3-4 for NO contacts