440R-J23102
Guardmaster MSR121RT Safety Relay
Rockwell Automation announces that as of December 31, 2019, the Guardmaster MSR121RT Safety Relay will be discontinued and no longer available for sale. Customers are encouraged to remove references to the affected product(s)
Discontinued Date:
December 31, 2019
Replacement Category:
Functional Replacement
Replacement Product:
View Replacement Details
[https://www.rockwellautomation.com/en-us/support/product/product-compatibility-migration/product-lifecycle-status/migration-documents.html]
Product at a glance
Rockwell Automation announces that as of December 31, 2019, the Guardmaster MSR121RT Safety Relay will be discontinued and no longer available for sale. Customers are encouraged to remove references to the affected product(s)
Discontinued Date:
December 31, 2019
Replacement Category:
Functional Replacement
Replacement Product:
View Replacement Details
[https://www.rockwellautomation.com/en-us/support/product/product-compatibility-migration/product-lifecycle-status/migration-documents.html]
Product at a glance
Reset | Automatic/Manual Monitored |
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- Safety
This product was certified with the above certifications as of 2025-07-27. Products sold before or after this date might carry different certifications. Please review the product label to check for the certifications your specific product carries.
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Technical Specifications
Reset | Automatic/Manual Monitored |
---|
Documents
Looking for more documentation?
Find curated technical documentation for this product in the Technical Documentation Center, or search our full Literature Library.
Search the Literature Library
Certifications
- Safety
This product was certified with the above certifications as of 2025-07-27. Products sold before or after this date might carry different certifications. Please review the product label to check for the certifications your specific product carries.
Technotes
Looking for more Technotes?
Find questions and answers from Rockwell Automation technical experts for this product in our Knowledgebase.
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