Siemens SIRIUS 3RT2 Manual page 22

Product description
3.3 Applications
3RA2816-0EW20 function module for contactor assemblies for star-delta (wye-delta) start
The function module for plugging into contactor assemblies for star-delta (wye-delta) start for
sizes S00, S0, S2 and S3 comprises the following devices:
● 1 basic module with time setting
● 2 coupling modules with corresponding connecting cable to coupling or function module
Figure 3-1
The function module replaces the entire control circuit wiring and combines the functions of
the following devices and tasks:
● Timing relay star-delta (wye-delta) function
● Auxiliary switches
● Auxiliary conductor wiring
● Electrical interlock
● Switch position indicator for the contactor below (plunger)
22
Star-delta (wye-delta) starter, completely assembled
SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
Manual, 02/2019, A5E03656507620A/RS-AD/005