Siemens SIRIUS 3SK1

14.2.2 Internal circuit diagrams for 3SK1 Advanced basic units
Basic unit 3SK1121-.AB40 Advanced relay instantaneous
_6WDUWXS7HVW\HVQR
_VLQJOHFKVHQVRUVGRXEOHFKVHQVRU
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_$XWRVWDUW0RQLWRUHG6WDUW
6(75(6(7
/RJLF

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6<6
Basic unit 3SK1121-.CB4. Advanced relay time-delayed
/RJLF
6<6
6(75(6(7
_$XWRVWDUW0RQLWRUHG6WDUW
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_VLQJOHFKVHQVRUVGRXEOHFKVHQVRU
_6WDUWXS7HVW\HVQR
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$
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$
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,1.,173$5,17,1) ,16

Circuit diagrams
14.2 Internal circuit diagrams
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
200 Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005