Siemens SIRIUS 3SK1 Equipment Manual page 169

Procedure for screw-type terminal blocks
1. Insert the relevant cable into square on the screw-type terminal until it engages.
2. Hold the cable in the screw-type terminal.
3. Tighten the screw of the terminal in which the cable is inserted.
4. Pull on the cable to ensure it is screwed tight.
Procedure for spring-loaded terminals
1. To release the clamping springs, insert the screwdriver as far as it will go into the rectangular
opening of the spring-loaded terminal. Please observe a 10° horizontal angular deviation of
the screwdriver to the oval opening.
2. Insert the cable into the oval opening as far as it will go.
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005
Connection
8.3 Devices 90 mm
169