3SK1121-2CB42
The Siemens SIRIUS 3SK1121-2CB42 is a relay output type safety relay that provides two sets of instantaneous and two sets of delayed (0.5~30 seconds) normally open safety contacts. It features spring-loaded (push-in) terminals for quick wiring, a rated voltage of 24VDC, and complies with PL e and Cat.4 safety classes. It is suitable for safety circuits that require long-delay shutdown.
Product Positioning
The 3SK1121-2CB42 is a SIRIUS 3SK1 series relay-type safety relay with a built-in adjustable delay of 0.5 to 30 seconds and a spring-loaded (push-in) terminal for easy and quick wiring and maintenance.
Core Product Advantages and Features
Relay mechanical contact output
It provides a safety output using mechanical relay contacts and is suitable for general industrial safety interlocking circuits.
Adjustable delay from 0.5 to 30 seconds
The delay-enabled output has a long range, making it suitable for machine applications requiring a longer buffer downtime.
Spring-loaded push-in terminal
Screwless quick-connect wiring shortens installation and maintenance time and reduces the risk of loosening.
High security level certification
Compliant with ISO 13849-1 PL e, Cat.4 and IEC 62061/61508 SIL3 level
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The Siemens SIRIUS 3SK1122-1AB40 features a solid-state electronic output design, providing three sets of electronic enable circuits and one set of electronic signal circuits. It does not include a delay function, has a rated voltage of 24VDC, uses screw terminal wiring, and meets PLE, Cat.4 safety standards. It is suitable for general safety interlock circuits.
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3SK1121-2CB41
The Siemens SIRIUS 3SK1121-2CB41 is a relay output type safety relay that provides two sets of instantaneous and two sets of delayed (0.05~3 seconds) normally open safety contacts. It features spring-loaded (push-in) terminals for quick wiring, a rated voltage of 24VDC, and complies with PL e and Cat.4 safety classes. It is suitable for safety circuits that require short-delay shutdown.
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3SK1121-2AB40
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