MRA112-CB Rotary Switch - Equivalent & Substitute Parts

Part Overview

The MRA112-CB is a rotary switch manufactured by NKK Switches, designed for panel-mount applications with adjustable position selection from 2 to 12 positions. This single-pole, single-deck switch operates at 250mA AC and 125V AC, featuring a non-shorting (BBM) contact configuration with a 30° angle of throw. The component is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

MRA112-CB

NKK SwitchesIn Stock: 882MRA112-CB Datasheet

Current PartRFQ

MRAN112-CB

NKK SwitchesIn Stock: 814MRAN112-CB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Circuit Configuration: SP12T (single-pole, 12-throw maximum)
• Current Rating: 250mA AC minimum
• Voltage Rating: 125V AC minimum
• Contact Timing: Non-Shorting (BBM) operation
• Mounting Interface: Panel Mount, Through Hole with 6.35mm circular cutout
• Actuator Type: Knob with 30° angle of throw
• Termination: PC Pin configuration
• Regulatory Compliance: ROHS3 Compliant

The MRAN112-CB, manufactured by NKK Switches, meets these substitution criteria as an active-status alternative within the same manufacturer's product line.

Parameter Comparison

Engineering Selection Recommendations

The MRAN112-CB is identified as the manufacturer-recommended substitute for the obsolete MRA112-CB. Both components are manufactured by NKK Switches and maintain ROHS3 compliance. The MRAN112-CB carries active product status, ensuring ongoing availability and supply chain continuity compared to the obsolete MRA112-CB.

Selection of the MRAN112-CB is appropriate for applications requiring replacement of the MRA112-CB where the specified electrical and mechanical parameters align with system requirements.

Frequently Asked Questions (FAQ)

Q: Why is the MRA112-CB classified as obsolete? A: The MRA112-CB has reached end-of-life status within NKK Switches' product portfolio. The MRAN112-CB represents the active-status continuation within the manufacturer's rotary switch line.

Q: What are the critical parameters for substitution compatibility? A: Substitutes must match the SP12T circuit configuration, 250mA AC current rating, 125V AC voltage rating, non-shorting (BBM) contact timing, panel-mount through-hole installation interface with 6.35mm circular cutout, and knob actuator with 30° angle of throw.

Q: Is the MRAN112-CB a direct mechanical replacement? A: Both the MRA112-CB and MRAN112-CB are manufactured by NKK Switches and share the same mounting interface specifications. Mechanical compatibility is maintained for panel-mount applications with the specified cutout dimensions.

Q: Are there regulatory compliance differences between the main part and substitute? A: Both the MRA112-CB and MRAN112-CB maintain ROHS3 compliance. The MRAN112-CB carries active product status, providing assurance of continued regulatory support and supply availability.

Q: What inventory status should be considered? A: The MRA112-CB has 796 pieces in stock as new original inventory. The MRAN112-CB has 775 pieces in stock as new original inventory. Both are available through current distribution channels.