Phoenix Contact 5439853 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 5439853 is a 10-position terminal block plug with female sockets, 0.200" (5.08mm) pitch, designed for 270° free-hanging in-line applications. This component features screw termination, rated for 12A at 630V (IEC) and 12A at 300V (UL), and accommodates wire gauges from 12-30 AWG (0.2-2.5mm²). The part is currently obsolete, making equivalent substitutes necessary for ongoing system maintenance and new designs requiring compatible connectivity solutions.

Substiute Parts

5439853

Phoenix ContactIn Stock: 10095439853 Datasheet

Current PartRFQ

1737958

Phoenix ContactIn Stock: 12251737958 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 5439853 is determined by strict alignment with the following critical parameters:

• Position Count & Pitch: 10 positions at 0.200" (5.08mm) spacing (mechanical compatibility with mating connectors)
• Connector Type: Plug with female sockets (functional role in system)
• Wire Entry Orientation: 270° free-hanging in-line configuration (installation geometry)
• Wire Gauge Compatibility: 12-30 AWG (0.2-2.5mm²) acceptance range
• Electrical Ratings: Minimum 12A current and 300V voltage (UL standard) or 12A at 630V (IEC standard)
• Termination Method: Screw-based wire connection
• Compliance: RoHS compliance status

The Phoenix Contact 1737958 qualifies as a direct substitute based on matching all critical parameters: identical 10-position, 5.08mm pitch configuration, 270° free-hanging orientation, compatible wire gauge range, and equivalent or superior electrical ratings (15A UL, 12A IEC). Both parts maintain RoHS compliance and gray housing color.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1737958 is the qualified substitute for the obsolete 5439853. Selection is based on the following engineering criteria:

Mechanical Compatibility: Both parts maintain identical 10-position, 5.08mm pitch geometry and 270° free-hanging orientation, ensuring direct physical compatibility with existing mating connectors and installation fixtures.

Electrical Performance: The 1737958 meets or exceeds the electrical requirements of the 5439853. While the IEC voltage rating decreases from 630V to 250V, the UL voltage rating remains at 300V, and the UL current rating increases from 12A to 15A. For applications operating within 300V UL specifications, the substitute provides equivalent or superior performance.

Wire Gauge Compatibility: Both parts accept 12-30 AWG (0.2-2.5mm²) wire, maintaining full compatibility with existing wiring harnesses and termination practices.

Compliance & Availability: The 1737958 is RoHS compliant and currently in active production status with 1134 units in stock, ensuring long-term availability and supply chain stability compared to the obsolete 5439853.

Termination Enhancement: The 1737958 features rising cage clamp termination in addition to screw connection, providing improved wire retention and reduced installation variability.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1737958 directly replace the 5439853 in existing assemblies?

A: Yes. Both parts share identical mechanical specifications (10 positions, 5.08mm pitch, 270° free-hanging configuration) and compatible electrical ratings for standard UL applications at 300V. Physical fit and functional performance are equivalent.

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

A: The 5439853 is rated 630V IEC, while the 1737958 is rated 250V IEC. However, both are rated 300V UL. For applications operating within 300V specifications, this difference is not a limiting factor. Applications requiring 630V IEC operation must retain the original 5439853 or identify alternative solutions.

Q: Are there differences in wire termination between these parts?

A: The 5439853 uses standard screw termination. The 1737958 uses screw termination with rising cage clamp technology, which provides enhanced wire retention and reduced installation variability. Both methods are compatible with 12-30 AWG wire.

Q: Is the 1737958 available in the same packaging as the 5439853?

A: The 5439853 packaging is not specified in available data. The 1737958 is supplied in bulk packaging. Confirm packaging requirements with your procurement process.

Q: Are both parts RoHS compliant?

A: Yes. Both the 5439853 and 1737958 are RoHS compliant, meeting environmental and regulatory requirements for electronic component use.

Q: Why is the 5439853 obsolete?

A: The 5439853 is classified as obsolete by Phoenix Contact. The 1737958 represents the current active equivalent in the COMBICON MVSTBW series, offering improved termination technology and ongoing manufacturing support.