3Ra24 Contactor Assemblies For Star-Delta (Wye-Delta) Start - Siemens SIRIUS 3RT Series System Manual

2.2.2.4

3RA24 contactor assemblies for star-delta (wye-delta) start

The 3RA24 contactor assembly for star-delta (wye-delta) start consists of three 3-pole
contactors (line contactor, star contactor, and delta contactor), main circuit wiring modules,
and plug-on function modules for the control circuit wiring.
The 3RA24 contactor assembly for star-delta (wye-delta) start of sizes S00 and S0 is
available in two versions:
● Fully wired and tested with electrical and mechanical interlock.
● As a kit for customer assembly.
The fully wired 3RA24 contactor assemblies for star-delta (wye-delta) start can be ordered
with the following plug-on function modules:
● Without a communication connection.
● With a communication connection.
Connection systems
The fully wired 3RA24 contactor assembly for star-delta (wye-delta) start can be supplied
either with a screw-type connection system or a spring-loaded connection system.
The illustrations below show the fully assembled contactor assembly for star-delta (wye-
delta) start without a communication connection, in the version with the screw-type
connection system.
Table 2- 8 Illustrations of the 3RA24 contactor assembly for star-delta (wye-delta) start (sizes S00 and S0)
3RA24 contactor assembly for star-delta (wye-delta) start,
screw connection, size S00
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
SIRIUS 3RT2 contactors/contactor assemblies
3RA24 contactor assembly for star-delta (wye-delta) start,
screw connection, size S0
2.2 Product description
111