Connection - Siemens SIRIUS 3RT Series System Manual

2.6

Connection

Connection systems
The SIRIUS contactors are available with the following connection types:
● Screw-type connection system
● Spring-loaded connection system
● Ring cable lug connection system
● Solder pin connection (only possible for size S00, in conjunction with a solder pin
adapter)
Terminal designations
Terminal
A1
A2
L1, L2, L3
T1, T2, T3
13. 14
21. 22
The auxiliary/control contacts have a two-digit designation:
● First digit: Consecutive number of the auxiliary contacts (sequence number).
● Second digit: Task of the relevant auxiliary contact (function number).
For example, 1-2 for NC contact or 3-4 for NO contact
Terminal designations of the auxiliary contacts
The terminal designations as per DIN EN 50012 apply to size S00 contactors with an
integrated auxiliary (NO) contact. Auxiliary contacts are fitted and arranged on size S0
contactors (integrated in the basic device) in accordance with the terminal designations
contained in DIN EN 50012.
Additionally, for sizes S00 and S0, complete devices with permanently mounted auxiliary
switch blocks (2 NO contacts + 2 NC contacts in accordance with DIN EN 50012) are
available.
Coil terminals
Size S00 and S0 contactors feature a coil terminal on the front. An adapter
(3RT2926-4R./. coil terminal module) can be used to move the coil terminal up or down on
size S0 contactors (compatible with 3RT102).
Reference
More information ...
About the coil terminal module and how to mount
it on a 3RT20 contactor (size S0)
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
Designation
Coil terminal +
Coil terminal -
Contactor's main circuit terminal to the power network
Contactor's main circuit terminal to the load/motor connection
Auxiliary contact, closing
Auxiliary contact, opening
SIRIUS 3RT2 contactors/contactor assemblies
Can be found in the chapter titled ...
Coil terminal module (Page 195)
2.6 Connection
153