Introduction
1
1.1 Purpose of this manual
This manual contains a detailed description of SIRIUS 3SK1 safety relays and components that
can be used with them as well as of 3RQ1 coupling relays.
This manual provides you with the information you require to congure, install, connect and
diagnose 3SK1 safety relays. A few application examples provide you with a clear and practice-
oriented introduction.
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005 9