Omron A22RK-3AC Equivalent & Substitute Parts

Part Overview

The Omron A22RK-3AC is a configurable switch body with keylock actuator and non-illuminated design, classified as a momentary-type component requiring contact blocks for operation. This part is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing maintenance and new designs. The A22RK-3AC maintains a 22.3mm round panel cutout dimension and operates within unlimited moisture sensitivity parameters.

Substiute Parts

A22RK-3AC

Omron Automation and SafetyIn Stock: 940A22RK-3AC Datasheet

Current PartRFQ

A22NZ-3RB-01DA

Omron Automation and SafetyIn Stock: 724A22NZ-3RB-01DA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A22RK-3AC is determined by strict alignment of the following critical parameters:

• Actuator Type: Must be keylock to maintain mechanical interface compatibility
• Type: Must be momentary for functional equivalence
• Illumination: Must be non-illuminated to match operational characteristics
• Panel Cutout Dimensions: Must be 22.3mm round to ensure mechanical fit in existing installations
• Requires Contact Block(s): Must maintain modular contact block architecture
• Moisture Sensitivity Level: Must be MSL 1 (Unlimited) or equivalent
• Regulatory Compliance: Must maintain EAR99 and HTSUS 8536.50.9065 classifications

The A22NZ-3RB-01DA qualifies as a substitute based on matching all critical parameters, despite belonging to the A22NK series rather than A22RK. Both components share identical functional specifications, panel cutout dimensions, and regulatory classifications.

Parameter Comparison

Engineering Selection Recommendations

The A22NZ-3RB-01DA serves as a direct functional equivalent to the A22RK-3AC for applications requiring configurable switch bodies with keylock actuators and non-illuminated operation. Both components are classified as obsolete products, indicating limited availability through standard distribution channels.

Selection between these parts should be based on:

• Packaging Requirements: The A22RK-3AC is supplied in tray packaging, while the A22NZ-3RB-01DA is supplied in bulk packaging. Procurement volume and handling procedures may influence selection.
• RoHS Compliance: The A22NZ-3RB-01DA explicitly meets RoHS compliance requirements, whereas RoHS status for the A22RK-3AC is not specified in available documentation.
• Inventory Availability: Current stock levels differ between parts (A22RK-3AC: 843 units; A22NZ-3RB-01DA: 660 units), which may affect procurement timelines.

Both parts maintain identical electrical and mechanical specifications, regulatory classifications, and moisture sensitivity parameters, ensuring functional interchangeability in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the A22NZ-3RB-01DA replace the A22RK-3AC in existing installations?

A: Yes. Both components share identical panel cutout dimensions (22.3mm round), actuator type (keylock), operation type (momentary), and illumination characteristics (non-illuminated). Mechanical and electrical compatibility is maintained.

Q: What is the significance of the series designation difference (A22RK vs. A22NK)?

A: Series designation reflects internal Omron product architecture. The A22NK series (represented by the A22NZ base number) and A22RK series are distinct product lines within the configurable switch component family. Despite different series classifications, the A22NZ-3RB-01DA meets all substitution criteria for the A22RK-3AC.

Q: Does packaging type affect functional compatibility?

A: No. Packaging type (tray vs. bulk) affects handling, storage, and procurement procedures but does not impact electrical or mechanical performance. Selection should be based on inventory management and logistics requirements.

Q: Are both parts suitable for new designs?

A: Both the A22RK-3AC and A22NZ-3RB-01DA are classified as obsolete products. For new designs, consultation with Omron regarding current-generation configurable switch components is recommended to ensure long-term component availability and support.

Q: What role do contact blocks play in these components?

A: Both the A22RK-3AC and A22NZ-3RB-01DA are modular switch bodies that require separate contact block assemblies to establish electrical switching functionality. Contact block selection is independent of the switch body choice and is determined by specific circuit requirements.

Q: How do the MSL ratings affect storage and handling?

A: Both components carry MSL 1 (Unlimited) ratings, indicating no moisture sensitivity restrictions. Standard industrial storage conditions are appropriate for both parts without special desiccant or controlled-environment requirements.