Siemens SIRIUS 3SK1

5.5.2.3 Design
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





① Top cover 󹪞ap
② Top cover 󹪞ap; internal inscription
③ Display LEDs
④ Bottom cover 󹪞ap
⑤ Bottom cover 󹪞ap; internal inscription
⑥ DataMatrix code
⑦ Device identi󹪝cation label
5.5.2.4 Terminal assignment
Terminal Explanation
A1 L+
A2 N-
+ +24 V DC
+ +24 V DC
3SK1 / 3RQ1 devices
5.5 3SK1 input expansions
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005 109