Reference - Siemens SIRIUS 3RT Manual

Configuration
6.13 Starting three-phase motors with reduced starting current peaks (contactor assembly for star-delta (wye-
delta) start)
Kit for contactor assemblies for star-delta (wye-delta) start, sizes S6 to S12
The contactor assemblies for star-delta (wye-delta) start are available as kits for self-
assembly.
The same accessories as for the basic units of the corresponding size can be used.
The kit for contactor assemblies for star-delta (wye-delta) start contains the following:
● Neutral bridges
● Wiring module on the bottom (wiring module on the top is not included in the scope of
supply. (A double infeed between the line contactor and the delta contactor is
recommended.)
The following accessories for the basic units can also be used for the contactor assemblies
for star-delta (wye-delta) starting:
● Auxiliary switch blocks (on the front, on the side)
● Surge suppressors
● Solid-state time-delay auxiliary switch blocks with star-delta (wye-delta) function (timing
relay)
In addition, special accessories are available for the contactor assemblies for star-delta
(wye-delta) start:
● Neutral bridges (parallel connectors)
● Mechanical connectors
● Wiring modules
● Base plates for contactor assemblies for star-delta (wye-delta) start
6.13.1

Reference

Reference
More information ...
About the components for customers to assemble
their own contactor assemblies for star-delta
(wye-delta) start
152
Can be found in the chapter titled ...
Assembly kit for contactor assemblies for star-
delta (wye-delta) start (sizes S00 to S3)
(Page 391) and Wiring kit for contactor assem-
blies for star-delta (wye-delta) start (sizes S6 to
S12). (Page 427).
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006