Phoenix Contact 3003729 Terminal Block - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 3003729 is a 2-position ground terminal block connector designed for wire gauges 14-26 AWG (0.14-2.5 mm²). This component features push-in spring termination with polyamide insulation rated UL94 V-0 and is part of the CLIPLINE MZB series. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new designs requiring compatible grounding solutions.

Substiute Parts

3003729

Phoenix ContactIn Stock: 12433003729 Datasheet

Current PartRFQ

3244151

Phoenix ContactIn Stock: 7513244151 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 3003729 is determined by the following critical parameters:

• Number of Positions and Levels: Both main and substitute parts must maintain 2 positions in a single level configuration to ensure mechanical and electrical compatibility with existing PCB layouts and connector housings.

• Terminal Width: The 5.2 mm terminal width is a fixed mechanical dimension that determines physical fit within connector frames and spacing requirements. Substitute parts must match this specification exactly.

• Wire Gauge Compatibility: The main part accepts 14-26 AWG (0.14-2.5 mm²). Substitute parts must accommodate this range or a compatible superset range to ensure all intended wire sizes can be properly terminated.

• Termination Technology: Both push-in spring and spring cage termination methods are acceptable as they provide equivalent electrical and mechanical performance for grounding applications.

• Material and Flammability: Polyamide insulation with UL94 V-0 rating ensures compliance with fire safety standards. Substitute parts must maintain these material specifications.

• Regulatory Compliance: RoHS and REACH compliance status must be maintained to ensure regulatory acceptability in target markets.

The Phoenix Contact 3244151 qualifies as a functional substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 3244151 serves as a direct functional substitute for the obsolete 3003729 based on the following engineering criteria:

Mechanical Compatibility: Both parts maintain identical 2-position, single-level configuration with 5.2 mm terminal width, ensuring compatibility with existing mechanical interfaces and mounting structures.

Electrical Performance: The 3244151 accepts a superset wire gauge range (12-28 AWG / 0.08-4 mm²) compared to the 3003729 (14-26 AWG / 0.14-2.5 mm²), providing equivalent performance for all wire sizes originally supported by the main part.

Regulatory Compliance: Both parts maintain UL94 V-0 polyamide insulation and current RoHS/REACH compliance status, satisfying regulatory requirements for grounding applications in industrial control systems.

Termination Technology: The spring cage termination of the 3244151 provides equivalent electrical and mechanical performance to the push-in spring design of the 3003729 for grounding circuit applications.

Product Availability: The 3244151 carries Last Time Buy status, indicating limited future availability. Procurement planning should account for this status when planning long-term component sourcing.

Frequently Asked Questions (FAQ)

Q: Can the 3244151 directly replace the 3003729 in existing designs?

A: Yes. Both parts share identical mechanical dimensions (2 positions, 5.2 mm terminal width), insulation material (polyamide UL94 V-0), and regulatory compliance. The 3244151 accepts a wider wire gauge range, making it functionally compatible with all applications of the 3003729.

Q: What is the difference between push-in spring and spring cage termination?

A: Push-in spring termination (3003729) and spring cage termination (3244151) both provide secure wire retention through spring force. Spring cage design offers equivalent electrical and mechanical performance for grounding applications. Selection between these termination styles depends on installation procedure preferences and equipment design requirements.

Q: Are there any wire gauge limitations when substituting?

A: No. The 3244151 accepts 12-28 AWG (0.08-4 mm²), which encompasses the full 14-26 AWG (0.14-2.5 mm²) range of the 3003729. All wire sizes compatible with the original part are compatible with the substitute.

Q: What packaging is available for the 3244151?

A: The 3244151 is supplied in bulk packaging, differing from the original part specification. Procurement should confirm packaging requirements for assembly and inventory management processes.

Q: Are both parts RoHS compliant?

A: Yes. The 3003729 is RoHS Compliant, and the 3244151 is ROHS3 Compliant. Both meet current RoHS regulatory requirements for component selection in regulated markets.

Q: What is the stripping length difference between these parts?

A: The 3003729 specifies 9 mm stripping length, while the 3244151 specifies 8 mm. This minor difference reflects design variations between series but does not affect functional compatibility for standard installation procedures.