Phoenix Contact 5439879 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 5439879 is a 12-position terminal block plug with female sockets, 0.200" (5.08mm) pitch, and 270° free-hanging wire entry configuration. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations. The part operates at 12A (IEC) / 12A (UL) and 630V (IEC) / 300V (UL), with screw termination and M3 fastening specifications.

Substiute Parts

5439879

Phoenix ContactIn Stock: 12015439879 Datasheet

Current PartRFQ

1783229

Phoenix ContactIn Stock: 11741783229 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 5439879 is determined by the following critical parameters:

Mandatory Matching Parameters:

• 12-position configuration
• 0.200" (5.08mm) pitch spacing
• Female socket type
• Free-hanging (in-line) mounting
• Screw termination method
• M3 fastening specification
• Wire gauge compatibility: 12-30 AWG (0.2-2.5mm²)
• RoHS compliance status

Acceptable Variation Parameters:

• Plug wire entry angle (270° vs. alternative orientations)
• Voltage rating (provided minimum IEC/UL requirements are met)
• Current rating (provided minimum IEC/UL requirements are met)
• Termination mechanism refinement (screw vs. rising cage clamp screw)

The substitute part Phoenix Contact 1783229 maintains all mandatory matching parameters while introducing a 90° wire entry orientation and enhanced termination features (rising cage clamp with retention latches).

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1783229 serves as a direct functional substitute for the obsolete 5439879 based on the following engineering criteria:

Electrical Compliance: Both components meet UL 300V / 12A specifications. The 1783229 maintains IEC compliance at 320V (compared to 630V on the main part), which is acceptable for applications operating within standard industrial voltage ranges. The 1783229 provides enhanced UL current rating at 15A, offering additional margin in UL-regulated applications.

Mechanical Compatibility: Identical 12-position, 5.08mm pitch configuration ensures direct mechanical interchangeability with mating connectors. M3 screw fastening and torque specifications are identical, eliminating installation procedure modifications.

Product Status Advantage: The 1783229 is classified as active product status, ensuring long-term availability and supply chain continuity compared to the obsolete 5439879.

Certification Alignment: Both components maintain RoHS compliance and UL94 V-0 flammability rating, satisfying regulatory requirements for equivalent applications.

Wire Entry Orientation Consideration: The primary design difference is the 90° wire entry on the 1783229 versus 270° on the 5439879. This variation requires assessment of physical installation space and cable routing requirements in the target application. The 1783229 additionally incorporates retention latches on the wire side, providing enhanced mechanical security during installation and operation.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1783229 directly replace the 5439879 in existing installations?

A: Mechanical and electrical compatibility is confirmed for applications operating within the 1783229 specifications. The primary consideration is wire entry angle: the 1783229 features 90° entry versus the 5439879's 270° configuration. Physical installation space must accommodate this orientation difference. Electrical parameters remain compatible for standard industrial applications.

Q: What is the voltage rating difference between these parts?

A: The 5439879 is rated 630V (IEC) while the 1783229 is rated 320V (IEC). Both are rated 300V (UL). For applications requiring IEC compliance above 320V, the 1783229 may not be suitable. For standard industrial applications operating at or below 320V IEC, the substitute is appropriate.

Q: Are the screw termination specifications identical?

A: Yes. Both components use M3 fastening with 0.5-0.6 Nm (4.4-5.3 Lb-In) torque specification. The 1783229 incorporates a rising cage clamp mechanism within the screw termination, which enhances wire retention but does not alter the fundamental M3 torque requirement.

Q: Does the 1783229 support the same wire gauge range?

A: Yes. Both components accept 12-30 AWG (0.2-2.5mm²) wire gauge, with identical 7mm wire strip length specification.

Q: What is the significance of the retention latches on the 1783229?

A: The retention latches on the wire side of the 1783229 provide mechanical security to prevent accidental wire displacement during installation and operation. This is an enhancement feature not present on the 5439879 but does not affect electrical or mechanical compatibility.

Q: Why is the 5439879 classified as obsolete?

A: Product status reflects manufacturer discontinuation. The 1783229 (active status) represents the current Phoenix Contact offering in this terminal block category, ensuring ongoing availability and support.