Siemens SIRIUS 3RH Series, System Manual

Page: 219 / 786

SIRIUS 3RT2 contactors/contactor assemblies
2.7 Accessories
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
219
2.7.25 Assembly kit for contactor assemblies for star-delta (wye-delta) start
2.7.25.1 Description
Prerequisite
The following components, which have to be ordered separately, are required to mount the
contactor assembly for star-delta (wye-delta) start:
●
Assembly kit for the 3RA24 contactor assembly for star-delta (wye-delta) start
● Function modules with or without communication connection.
● Three power contactors 3RT20
Note
If the function modules are used, they take over the tasks associated with control circuit
wiring and the timing relay. However, an installation without function modules and with an
additional external timing relay continues to be possible. Accordingly, the scope of supply of
the assembly kit includes the wiring modules for the control circuit wiring (these are not
required if function modules are being used).
Assembly kit for 3RA24 contactor assembly for star-delta (wye-delta) start
The assembly kit for customer assembly of the 3RA24 contactor assembly for star-delta
(wye-delta) start comprises the following components and is available in various versions.
Table 2- 72 Components for assembling the contactor assembly for star-delta (wye-delta) start
Assembly
kit
Assembly kit components Connection system Order number
Screw connection 3RA2913-2BB1 Assembly
kit for size
S00
 Mechanical interlock

Four connecting clips

Neutral bridge

Wiring modules, top and bottom
Spring-loaded
connection
3RA2913-2BB2
Screw connection 3RA2923-2BB1 Assembly
kit for size
S0

Four connecting clips
 Neutral bridge
 Mechanical interlock

Wiring modules, top and bottom
Spring-loaded
connection
3RA2923-2BB2