Omron A22R-FR-A Configurable Switch Body Equivalent & Substitute Parts

Part Overview

The Omron A22R-FR-A is a configurable switch body designed for pushbutton applications with a round, non-illuminated actuator. This component serves as the base housing for maintained-type switch assemblies and requires separate contact block(s) for complete functionality. The A22R-FR-A is classified as obsolete, making identification of compatible substitute parts essential for ongoing maintenance, repair, and new design implementations where this series is specified.

Substiute Parts

A22R-FR-A

Omron Automation and SafetyIn Stock: 751A22R-FR-A Datasheet

Current PartRFQ

A22NZ-RNA-NRA

Omron Automation and SafetyIn Stock: 1168A22NZ-RNA-NRA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A22R-FR-A is determined by the following critical parameters that must remain consistent across equivalent parts:

Primary Substitution Criteria:

• Actuator Type: Pushbutton, Round (mechanical interface requirement)
• Panel Cutout Dimensions: 22.3mm (Round) (mechanical fit requirement)
• Illumination: Non-Illuminated (functional specification)
• Switch Type: Maintained (operational characteristic)
• Requires Contact Block(s) (modular architecture requirement)
• Moisture Sensitivity Level: 1 (Unlimited) (environmental rating)

The A22NZ-RNA-NRA qualifies as a substitute part because it maintains all critical parameters while belonging to the compatible A22NN series within the Omron configurable switch family. Both parts share identical mechanical interfaces, functional characteristics, and environmental ratings, enabling direct substitution in applications where the A22R-FR-A is specified.

Parameter Comparison

Engineering Selection Recommendations

Both the A22R-FR-A and A22NZ-RNA-NRA are classified as obsolete products. Selection between these parts should be based on current inventory availability and application requirements:

A22R-FR-A: 681 pieces in stock. Use when existing designs or legacy systems specifically reference this part number and substitution is not feasible.

A22NZ-RNA-NRA: 1,079 pieces in stock. Preferred substitute offering greater availability. Identical mechanical and functional specifications enable direct replacement in new designs and retrofit applications.

Both parts carry EAR99 export classification and comply with MSL 1 environmental ratings. No additional compliance or certification differences exist between these components.

Frequently Asked Questions (FAQ)

Q: Can the A22NZ-RNA-NRA directly replace the A22R-FR-A in existing applications?

A: Yes. Both parts share identical panel cutout dimensions (22.3mm round), actuator type (pushbutton, round), switch type (maintained), and illumination specification (non-illuminated). Mechanical and functional compatibility is complete.

Q: What is the significance of the 22.3mm round panel cutout dimension?

A: This dimension specifies the physical opening required in the control panel for mounting. Both the main part and substitute maintain this specification, ensuring proper fit and alignment without panel modification.

Q: Do these parts require additional components for operation?

A: Yes. Both the A22R-FR-A and A22NZ-RNA-NRA are configurable switch bodies that require separate contact block(s) to establish electrical switching functionality. The switch body provides only the mechanical housing and actuator interface.

Q: What does "Maintained" switch type mean?

A: A maintained switch remains in its actuated state after the operator releases the pushbutton. The switch stays in the selected position until manually actuated again, as opposed to momentary switches that return to their default state upon release.

Q: Are there RoHS compliance differences between these parts?

A: The A22NZ-RNA-NRA is explicitly RoHS compliant. RoHS status for the A22R-FR-A is not specified in the provided data. For applications requiring RoHS certification, the A22NZ-RNA-NRA is the appropriate selection.

Q: What does MSL 1 (Unlimited) indicate?

A: Moisture Sensitivity Level 1 represents the lowest moisture sensitivity classification. These components have unlimited shelf life and require no special moisture control during storage, handling, or transportation.