MRA403-A Equivalent & Substitute Parts

Part Overview

The MRA403-A is a rotary switch manufactured by NKK Switches, classified as a 2-3 position, 4-pole, 3-throw (4P3T) panel mount component. This switch is rated for 250mA AC at 125VAC and features a non-shorting (BBM) contact configuration with adjustable index stops. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

MRA403-A

NKK SwitchesIn Stock: 976MRA403-A Datasheet

Current PartRFQ

MRAN403-A

NKK SwitchesIn Stock: 754MRAN403-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MRA403-A is determined by strict alignment with the following critical parameters:

• Circuit Configuration: 4P3T (4 poles, 3 throws)
• Number of Positions: 2 ~ 3 adjustable positions
• Current Rating: 250mA AC minimum
• Voltage Rating: 125V AC minimum
• Contact Timing: Non-Shorting (BBM)
• Mounting Type: Panel Mount, Through Hole
• Termination Style: PC Pin
• Physical Dimensions: Panel cutout 6.35mm diameter, depth 17.00mm behind panel
• Regulatory Compliance: ROHS3 Compliant

The MRAN403-A qualifies as a manufacturer-recommended substitute based on matching circuit configuration, electrical ratings, mounting specifications, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

The MRAN403-A is designated as the manufacturer-recommended substitute for the obsolete MRA403-A. Both components are manufactured by NKK Switches and maintain ROHS3 compliance. The MRAN403-A carries active product status, ensuring ongoing availability and support compared to the obsolete MRA403-A.

Selection of the MRAN403-A is appropriate for applications requiring replacement of the MRA403-A where the circuit configuration, electrical ratings, and mounting specifications align with system requirements. The transition from box packaging (MRA403-A) to bulk packaging (MRAN403-A) reflects standard industry practice for active product lines.

Frequently Asked Questions (FAQ)

Q: What makes MRAN403-A a valid substitute for MRA403-A?

A: Both components share identical circuit configuration (4P3T), are manufactured by NKK Switches, maintain ROHS3 compliance, and are designated through manufacturer substitution documentation. The MRAN403-A is the active product replacement for the obsolete MRA403-A.

Q: Are there differences in electrical performance between these parts?

A: The provided technical data confirms both components meet the same circuit configuration requirements. Detailed electrical specifications for the MRAN403-A should be cross-referenced with the manufacturer datasheet to confirm current and voltage ratings match application requirements.

Q: Does packaging format affect component compatibility?

A: Packaging format (box versus bulk) does not affect electrical or mechanical compatibility. The change from box to bulk packaging reflects standard industry practice for active product lines and does not impact functional performance or mounting characteristics.

Q: What is the significance of product status in substitution?

A: The MRA403-A is obsolete, meaning it is no longer manufactured or supported. The MRAN403-A carries active status, ensuring continued availability, technical support, and compliance with current regulatory standards. This makes it the appropriate choice for new designs and ongoing system maintenance.

Q: Should I consider any other factors when implementing this substitute?

A: Substitution decisions should be based on the critical parameters listed in this document: circuit configuration, electrical ratings, mounting type, termination style, and physical dimensions. Consult the manufacturer datasheet for the MRAN403-A to confirm all specifications align with your specific application requirements.