MRA403-BF Equivalent & Substitute Parts

Part Overview

The MRA403-BF is a rotary switch manufactured by NKK Switches, designed for panel-mount applications requiring multi-position switching capability. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance, repair, and component sourcing. The MRA403-BF operates at 125 VAC with a 250mA current rating and features a 4-pole, 3-throw (4P3T) configuration with adjustable index stops and non-shorting contact timing.

Substiute Parts

MRA403-BF

NKK SwitchesIn Stock: 1284MRA403-BF Datasheet

Current PartRFQ

MRAN403-BF

NKK SwitchesIn Stock: 982MRAN403-BF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MRA403-BF is determined by strict alignment with the following electrical and mechanical parameters:

• Circuit Configuration: 4P3T (4 poles, 3 throws)
• Current Rating: 250mA AC minimum
• Voltage Rating: 125 VAC minimum
• Contact Timing: Non-shorting (BBM) operation
• Mounting Type: Panel mount with through-hole termination
• Termination Style: PC pin configuration
• Position Range: 2 to 3 selectable positions
• Actuator Type: Knob-operated
• Contact Material & Finish: Copper with silver finish

The MRAN403-BF qualifies as a substitute based on manufacturer designation and series compatibility within the NKK Switches product line.

Parameter Comparison

Engineering Selection Recommendations

The MRAN403-BF is designated as the manufacturer-recommended substitute for the obsolete MRA403-BF. As an active product from NKK Switches, the MRAN403-BF provides continuity for applications requiring rotary switch functionality. The main part's ROHS3 compliance and REACH unaffected status support regulatory requirements for new designs and replacements.

When selecting between the main part and substitute, consider product availability: the MRA403-BF has 1227 units in stock (obsolete status), while the MRAN403-BF has 958 units available (active status). For new designs or long-term system support, the active MRAN403-BF is the preferred choice to ensure ongoing component availability and manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the MRAN403-BF directly replace the MRA403-BF in existing applications?

A: The MRAN403-BF is the manufacturer-designated substitute for the MRA403-BF. Compatibility depends on verification that electrical parameters (voltage, current, circuit configuration) and mechanical parameters (mounting type, termination style, actuator type) match the application requirements. Detailed specifications for the MRAN403-BF should be confirmed against your circuit design.

Q: What is the difference between the MRA403-BF and MRAN403-BF part numbers?

A: Both parts are NKK Switches rotary switches. The MRA403-BF is obsolete, while the MRAN403-BF is an active product. The nomenclature difference reflects product line evolution within the manufacturer's catalog.

Q: Are there packaging differences between these parts?

A: Both parts are supplied in bulk packaging. No alternative packaging options are specified in the available data.

Q: What compliance certifications apply to these parts?

A: The MRA403-BF is ROHS3 compliant and REACH unaffected. Compliance status for the MRAN403-BF should be verified with the manufacturer or distributor documentation.

Q: Why is the MRA403-BF classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production. The MRAN403-BF represents the current active equivalent in the NKK Switches product line.