Siemens SIRIUS 3RA6 System Manual page 137

Note
When delivered, terminals Y1 - Y2 and Y3 - Y4 are bridged as standard by a conductor. For
this reason, remove this conductor bridge before connecting a limit switch.
You can find more information on connecting the screw terminals and spring-loaded
terminals in chapter Connection via terminals (Page 74).
SIRIUS 3RA6 compact starter
System Manual, 08/2018, NEB560060102000/RS-AB/007
3RA64/3RA65 compact starter with IO-Link
6.9 Connection
137