MRA112-BA Equivalent & Substitute Parts

Part Overview

The MRA112-BA is a rotary switch manufactured by NKK Switches, designed for applications requiring selectable positions from 2 to 12. This single-pole, 12-throw (SP12T) switch operates at 125 VAC with a 250mA current rating and features a non-shorting (BBM) contact configuration. The component is panel-mounted with through-hole termination and a knob actuator.

The MRA112-BA is classified as obsolete. Locating equivalent or substitute components becomes necessary when original stock is depleted or when design updates require active product lines with ongoing manufacturer support and supply chain availability.

Substiute Parts

MRA112-BA

NKK SwitchesIn Stock: 979MRA112-BA Datasheet

Current PartRFQ

MRAN112-BA

NKK SwitchesIn Stock: 801MRAN112-BA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MRA112-BA is determined by the following critical parameters:

• Circuit Configuration: SP12T (Single Pole, 12 Throw) capability
• Electrical Ratings: 250mA AC current and 125 VAC voltage minimum
• Contact Timing: Non-shorting (BBM) operation
• Mounting Interface: Panel mount with through-hole termination
• Mechanical Compatibility: Knob actuator with 30° throw angle and 6.35mm circular panel cutout
• Contact Material & Finish: Copper base with silver finish for consistent electrical performance

The MRAN112-BA qualifies as a manufacturer-recommended substitute based on alignment with these core parameters. The substitute maintains the same electrical switching characteristics, mechanical mounting footprint, and contact system required for direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The MRAN112-BA is designated as the manufacturer-recommended substitute for the obsolete MRA112-BA. This substitution is supported by:

• Active Product Status: The MRAN112-BA maintains active production status with NKK Switches, ensuring ongoing availability and supply chain continuity.
• Regulatory Compliance: Both parts maintain ROHS3 compliance, satisfying environmental and regulatory requirements for electronic components.
• Manufacturer Endorsement: The substitution is explicitly recommended by NKK Switches, the original equipment manufacturer.

Selection of the MRAN112-BA eliminates obsolescence risk while maintaining compatibility with existing circuit designs and mechanical installations that accommodate the MRA112-BA.

Frequently Asked Questions (FAQ)

Q: Can the MRAN112-BA directly replace the MRA112-BA in existing designs?

A: The MRAN112-BA is the manufacturer-recommended substitute. Direct replacement is supported based on the manufacturer's substitution designation. Verify mechanical fit within your specific panel cutout and depth constraints before final integration.

Q: What are the key electrical parameters that must match for substitution?

A: The substitute must maintain SP12T circuit configuration, 250mA AC current rating, 125 VAC voltage rating, and non-shorting (BBM) contact timing. These parameters define the functional equivalence required for circuit operation.

Q: Does packaging differ between the main part and substitute?

A: The MRA112-BA packaging is listed as standard, while the MRAN112-BA is supplied in bulk packaging. Confirm bulk packaging meets your procurement and handling requirements.

Q: Are both parts RoHS compliant?

A: The MRA112-BA is ROHS3 compliant. Compliance status for the MRAN112-BA is not specified in the available data. Consult the manufacturer's documentation for complete regulatory certification details.

Q: What is the mechanical compatibility between these parts?

A: Both parts share the same manufacturer (NKK Switches) and are from related product series. Mechanical compatibility is supported by the manufacturer's substitution recommendation. Confirm panel cutout dimensions (6.35mm circular) and depth behind panel (17.00mm) align with your installation requirements.