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The Allen-Bradley 440R-SI2R2 is a Guardmaster single-input safety relay intended for industrial equipment maintenance and equipment-build applications. The precise 440R-SI2R2 reference identifies a specific configuration within the manufacturer’s product range; it is not a generic interchangeable replacement. For buyers working from a machine bill of materials or a component nameplate, retaining the complete part number is essential when requesting a quote.
This component is relevant to machine guarding, safety input monitoring and legacy safety control panels. When production equipment develops an electrical or sensing fault, purchasing teams often search the original manufacturer reference to minimize engineering changes and confirm compatibility with the installed circuit. The product should be matched to the installation documentation and current manufacturer literature before ordering.
For a replacement request, photograph the full nameplate, confirm the applicable supply or operating conditions, and provide the quantity, condition requirement, destination and deadline. Safety circuits require verification of wiring, reset logic and performance level by a qualified engineer. Similar-looking versions may have different connection methods, operating characteristics or approvals. Corwin Solutions can research sourcing options for exact-model requirements; displayed information is not an inventory, lead-time or condition guarantee.
For planned spares, keeping the full 440R-SI2R2 designation in maintenance records can make future quotations more precise and reduce ordering mistakes. For urgent equipment downtime, share the original assembly context and whether an approved substitute is acceptable. Any proposed alternative should be independently reviewed for fit, function, electrical performance and applicable safety requirements.
Technical Details and Product Specifications
Typical Industrial Applications
Machine guarding, safety input monitoring and legacy safety control panels. Component selection must be based on the specific machine and circuit requirements.
Replacement and Compatibility Notes
Safety circuits require verification of wiring, reset logic and performance level by a qualified engineer. Confirm ratings and approvals with the most recent manufacturer documentation before installation.
Request a Quote
Contact Corwin Solutions with manufacturer part number 440R-SI2R2, quantity, preferred condition, destination and required delivery date. Pricing and availability are confirmed only by formal quotation.
The Allen-Bradley 440R-SI2R2 is a Guardmaster single-input safety relay intended for industrial equipment maintenance and equipment-build applications. The precise 440R-SI2R2 reference identifies a specific configuration within the manufacturer’s product range; it is not a generic interchangeable replacement. For buyers working from a machine bill of materials or a component nameplate, retaining the complete part number is essential when requesting a quote.
This component is relevant to machine guarding, safety input monitoring and legacy safety control panels. When production equipment develops an electrical or sensing fault, purchasing teams often search the original manufacturer reference to minimize engineering changes and confirm compatibility with the installed circuit. The product should be matched to the installation documentation and current manufacturer literature before ordering.
For a replacement request, photograph the full nameplate, confirm the applicable supply or operating conditions, and provide the quantity, condition requirement, destination and deadline. Safety circuits require verification of wiring, reset logic and performance level by a qualified engineer. Similar-looking versions may have different connection methods, operating characteristics or approvals. Corwin Solutions can research sourcing options for exact-model requirements; displayed information is not an inventory, lead-time or condition guarantee.
For planned spares, keeping the full 440R-SI2R2 designation in maintenance records can make future quotations more precise and reduce ordering mistakes. For urgent equipment downtime, share the original assembly context and whether an approved substitute is acceptable. Any proposed alternative should be independently reviewed for fit, function, electrical performance and applicable safety requirements.
Technical Details and Product Specifications
Typical Industrial Applications
Machine guarding, safety input monitoring and legacy safety control panels. Component selection must be based on the specific machine and circuit requirements.
Replacement and Compatibility Notes
Safety circuits require verification of wiring, reset logic and performance level by a qualified engineer. Confirm ratings and approvals with the most recent manufacturer documentation before installation.
Request a Quote
Contact Corwin Solutions with manufacturer part number 440R-SI2R2, quantity, preferred condition, destination and required delivery date. Pricing and availability are confirmed only by formal quotation.