PM2-4R-X Ring Terminal Connector M4 Crimp

Part Overview

The PM2-4R-X is a circular ring terminal connector manufactured by Panduit Corp, designed for 14-16 AWG wire gauges with M4 stud mounting. This non-insulated, crimp-style terminal features a brazed seam and serrated termination for secure wire attachment. The part is classified as obsolete, necessitating identification of active substitute components that maintain electrical and mechanical compatibility for ongoing applications and new designs.

Substiute Parts

PM2-4R-X

Panduit CorpIn Stock: 736PM2-4R-X Datasheet

Current PartRFQ

3240078

Phoenix ContactIn Stock: 18563240078 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PM2-4R-X is determined by strict alignment of the following critical parameters:

Mandatory Compatibility Parameters:

• Terminal Type: Circular ring configuration
• Stud/Tab Size: M4 mounting interface
• Termination Method: Crimp attachment
• Contact Material: Copper-based composition
• Contact Finish: Tin plating
• Insulation Type: Non-insulated construction

Wire Gauge Compatibility: The PM2-4R-X accommodates 14-16 AWG wire. Substitute parts must support this range or extend it without reducing the lower or upper bounds below the original specification.

Mechanical Dimensions: Thickness, width, and length parameters must remain within acceptable tolerances to ensure proper seating and electrical contact at the M4 stud interface.

The Phoenix Contact 3240078 qualifies as a substitute based on these parameters, with the additional capability to accommodate 14-18 AWG wire gauges, providing extended wire gauge flexibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement Applications:

The Phoenix Contact 3240078 serves as the active substitute for the obsolete PM2-4R-X. Both components share identical M4 stud mounting, circular terminal geometry, crimp termination, and tin-plated copper contact construction. The 3240078 maintains full compatibility with the original wire gauge range (14-16 AWG) while extending capability to 18 AWG.

Compliance Considerations:

The 3240078 is classified as active product status with ROHS3 compliance certification and REACH unaffected status, providing regulatory alignment for current manufacturing and procurement requirements. The PM2-4R-X, being obsolete, lacks current compliance documentation.

Dimensional Tolerance:

Mechanical dimensions between the two parts exhibit minor variations: the 3240078 is 0.001" thinner, 0.005" wider, and 0.080" shorter than the PM2-4R-X. These differences remain within acceptable tolerances for M4 stud interface applications and do not compromise electrical or mechanical performance.

Inventory and Availability:

The 3240078 is available in bulk packaging with 1,780 pieces in stock, compared to the PM2-4R-X with 725 pieces in limited obsolete inventory.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 3240078 directly replace the Panduit PM2-4R-X in existing assemblies?

A: Yes. Both components feature identical M4 stud mounting, circular ring terminal geometry, crimp termination, and tin-plated copper contacts. The 3240078 is mechanically and electrically compatible with applications designed for the PM2-4R-X.

Q: What is the significance of the extended wire gauge range (14-18 AWG) in the 3240078?

A: The 3240078 accommodates wire gauges from 14 to 18 AWG, compared to the PM2-4R-X range of 14-16 AWG. This extended range provides flexibility for applications using 17-18 AWG wire without requiring a different terminal component. For applications limited to 14-16 AWG, both parts perform identically.

Q: Are there dimensional differences that affect installation?

A: Minor dimensional variations exist: the 3240078 is marginally thinner (0.031" vs. 0.032"), slightly wider (0.315" vs. 0.310"), and shorter (0.630" vs. 0.710"). These differences do not affect M4 stud seating, electrical contact, or mechanical performance in standard applications.

Q: What is the difference between Copper and Electrolytic Copper contact materials?

A: Both are copper-based materials with tin plating. Electrolytic copper in the 3240078 is refined through electrolysis, providing consistent purity and electrical conductivity equivalent to the copper used in the PM2-4R-X. Both materials meet the electrical requirements for ring terminal connectors.

Q: Why is the 3240078 classified as ROHS3 compliant while the PM2-4R-X is not specified?

A: The PM2-4R-X is obsolete and predates current RoHS compliance documentation requirements. The 3240078, as an active product, includes current regulatory certifications. Both components use tin plating and copper materials consistent with RoHS directives.

Q: What packaging differences exist between these components?

A: The PM2-4R-X is supplied in unspecified packaging with limited inventory (725 pieces). The 3240078 is supplied in bulk packaging with higher availability (1,780 pieces), facilitating procurement for production environments.

Q: Are both components suitable for the same crimp tool specifications?

A: Both components use crimp termination with M4 stud mounting. Crimp tool compatibility depends on the specific tool design and wire gauge range. Verification of tool specifications with the terminal manufacturer is necessary for optimal crimping performance.

Q: What is the ECCN classification and does it affect procurement?

A: Both components are classified as ECCN EAR99, indicating they are not subject to export control restrictions. This classification applies uniformly to both the PM2-4R-X and 3240078.