Siemens
Siemens 3SK2122-2AA10
Siemens 3SK2122-2AA10 is a SIRIUS 3SK2 safety relay basic unit with 20 F-DI, 4 F-DQ, 2 DQ, 24 VDC supply, push-in terminals, and Safety ES parameterization.
Broader comparison
The broader comparison should focus on safeguarding architecture rather than on relay brand loyalty. Stay in this family if the validated safety concept still fits it cleanly; move only when the machine now needs a different level of flexibility or integration.
Specifications
Product family
Siemens SIRIUS 3SK2 basic units
Exact model
3SK2122-2AA10
Device type
Safety relay basic unit
Rated control supply
24 VDC
Fail-safe digital inputs
20 F-DI
Fail-safe digital outputs
4 F-DQ
Standard digital outputs
2 DQ
Parameterization software
SIRIUS Safety ES
Housing width
45 mm
Terminal style
Spring-loaded push-in terminals
Safety capability
Up to SIL 3 according to IEC 62061 and PL e according to ISO 13849-1
Device connector expansion
3SK1 output expansions, 3RQ1 coupling relays, and 3RM1 fail-safe motor starters
Siemens lifecycle status
PM300 Active Product
Net weight
0.369 kg
EAN
4047621004587
Manuals & Datasheets
Compatibility
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Accessories
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Replacement / Alternatives
No alternatives configured yet.