Siemens SIRIUS 3SK1 Manual page 146

Mounting
8.8 Mounting 22.5 mm/17.5 mm devices with device connectors on a standard mounting rail
Procedure
The figures show 22.5 mm devices. The 17.5 mm devices are mounted correspondingly.
Step
1 Place the back of the device
connector on the upper edge of the
standard mounting rail.
2 Press the lower half of the device
connector against the standard
mounting rail until the connector
engages.
3 Repeat the procedure with all the
required device connectors.
4 Push the device connectors together
until they engage.
5 Mount the cover on the left of the first
device connector. The cover is
included in the scope of supply of the
device terminator.
146
Instructions Figure
SIRIUS 3SK1 safety relays
Manual, 06/2018, A5E02526190021A/RS-AD/004