RM12WBP-4P(71) Equivalent & Substitute Parts

Part Overview

The RM12WBP-4P(71) is a 4-position circular connector plug with male pins manufactured by Hirose Electric Co Ltd. This connector belongs to the RM-W series and features a bayonet lock fastening mechanism with keyed orientation for in-line, free-hanging applications. The product is currently obsolete, making identification of compatible substitute components essential for system maintenance, repair, and redesign applications where continued availability is required.

Substiute Parts

RM12WBP-4P(71)

Hirose Electric Co LtdIn Stock: 1089RM12WBP-4P(71) Datasheet

Current PartRFQ

1404641

Phoenix ContactIn Stock: 13041404641 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RM12WBP-4P(71) is determined by the following core parameters:

• Connector Type: Plug with male pins
• Number of Positions: 4-position configuration
• Mounting Type: Free hanging, in-line installation
• Shell Size Classification: Circular connector shell size 12 or equivalent M12 designation
• Fastening Mechanism: Bayonet lock or threaded alternative for secure mating
• Orientation: Keyed design for polarization

The substitute part 1404641 (Phoenix Contact SACC series) satisfies these core substitution criteria through equivalent functional parameters: 4-position male pin plug, M12-4 shell size (equivalent to size 12), free-hanging in-line mounting, and keyed orientation (S-coded). While the fastening mechanism differs (threaded versus bayonet), both provide secure, polarized connections suitable for the same application class.

Parameter Comparison

Engineering Selection Recommendations

The RM12WBP-4P(71) is obsolete and no longer manufactured. The Phoenix Contact 1404641 is an active product with current manufacturing support and availability.

Selection of 1404641 as a substitute is supported by:

• Product Status Alignment: Active manufacturing status ensures continued supply and technical support
• Regulatory Compliance: Both parts share identical ECCN (EAR99) and HTSUS classifications, maintaining export and tariff consistency
• Functional Equivalence: Identical connector type, position count, shell size class, mounting configuration, and keyed orientation
• Enhanced Specifications: The substitute provides documented ingress protection (IP67), voltage rating (630VAC), and operating temperature range (-40°C ~ 85°C), specifications not provided for the obsolete original part
• Moisture Sensitivity: Both parts maintain MSL 1 (Unlimited) rating

The primary design difference is fastening mechanism (threaded versus bayonet). This change requires mechanical interface verification in the mating receptacle or cable assembly to confirm compatibility with existing installation hardware.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1404641 directly replace the RM12WBP-4P(71) in existing installations?

A: Functional compatibility is confirmed for connector type, pin count, shell size, and orientation. However, the fastening mechanism differs: the original uses bayonet lock while the substitute uses threaded connection. Verify that the mating receptacle or cable assembly can accommodate the threaded fastening before installation.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on: 4-position male pin plug configuration, shell size 12/M12-4 equivalence, free-hanging in-line mounting, keyed orientation, and circular connector category. Both parts meet these criteria.

Q: Are there compliance or regulatory differences between these parts?

A: Both parts share identical ECCN (EAR99) and HTSUS (8536.69.4020) classifications. No regulatory divergence exists for export control or tariff purposes.

Q: What additional specifications does the substitute part provide?

A: The Phoenix Contact 1404641 includes documented IP67 ingress protection, 630VAC voltage rating, and -40°C to 85°C operating temperature range. These specifications were not provided for the obsolete RM12WBP-4P(71).

Q: Is the screw termination of the substitute compatible with the original application?

A: Screw termination is a wire attachment method at the connector rear. Compatibility depends on the cable assembly or backshell design in your application. Verify that existing cables or backshells can accommodate M12 screw-terminated contacts.

Q: What is the inventory status of these parts?

A: RM12WBP-4P(71): 1002 pieces in stock (obsolete). Phoenix Contact 1404641: 1254 pieces in stock (active product).