Siemens SIRIUS 3RT2 - Page 23

Product description
3.3 Applications
SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
Manual, 02/2019, A5E03656507620A/RS-AD/005
23
Note
Fitting of auxiliary switches
When the 3RA2816
-0EW20 function module for star-delta (wye-delta) start is used, the
following applies:
No more than one 3RH29
lateral auxiliary switch block (product version
E03 and higher) may
be mounted onto the line contactor
(Q11) and onto the star (wye) contactor (Q12).