Phoenix Contact 5451129 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 5451129 is an 18-position terminal block plug with female sockets, 0.200" (5.08mm) pitch, designed for 90° free-hanging in-line applications. This component operates at 12A (IEC) / 12A (UL) and 630V (IEC) / 300V (UL), accommodating wire gauges from 12-30 AWG (0.2-2.5mm²). The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new designs requiring compatible connectivity solutions.

Key Parameters

Parameter	Value
Number of Positions	18
Pitch	0.200" (5.08mm)
Type	Plug, Female Sockets
Plug Wire Entry	90°
Mounting Type	Free Hanging (In-Line)
Current - IEC	12A
Voltage - IEC	630V
Wire Gauge Range	12-30 AWG (0.2-2.5mm²)
Termination Style	Screw
Housing Material	Polyamide (PA), Nylon
Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 5451129 is determined by strict alignment of the following critical parameters:

Position Count & Pitch: 18 positions at 0.200" (5.08mm) spacing ensures mechanical and electrical compatibility with mating connectors
Connector Type & Orientation: Female socket plug with 90° wire entry maintains identical form factor and installation requirements
Electrical Ratings: Current and voltage specifications must support the same or higher operational envelope
Wire Gauge Compatibility: Acceptable wire range must encompass 12-30 AWG (0.2-2.5mm²)
Termination Method: Screw-based termination allows functional equivalence
Housing & Compliance: Polyamide construction with UL94 V-0 rating ensures material compatibility and safety standards

The substitute part Phoenix Contact 1792401 meets all these criteria while offering enhanced termination technology (Rising Cage Clamp) and active product status.

Parameter Comparison

Parameter	5451129 (Main Part)	1792401 (Substitute)
Manufacturer	Phoenix Contact	Phoenix Contact
Category	Terminal Blocks	Terminal Blocks
Number of Positions	18	18
Pitch	0.200" (5.08mm)	0.200" (5.08mm)
Type	Plug, Female Sockets	Plug, Female Sockets
Plug Wire Entry	90°	90°
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Current - IEC	12A	12A
Voltage - IEC	630V	630V
Current - UL	12A	15A
Voltage - UL	300V	300V
Wire Gauge Range - AWG	12-30 AWG	12-30 AWG
Wire Gauge Range - mm²	0.2-2.5mm²	0.2-2.5mm²
Color	Green	Green
Contact Mating Finish	Tin	Tin
Features	Retention Latches (Wire Side)	Retention Latches (Wire Side)
Flammability Rating	UL94 V-0	UL94 V-0
Screw Size	M3	M3
Torque - Screw	0.5-0.6 Nm (4.4-5.3 Lb-In)	0.5-0.6 Nm (4.4-5.3 Lb-In)
Wire Strip Length	7mm	7mm
Housing Material	Polyamide (PA), Nylon	Polyamide (PA), Nylon
Insulation Height	1.024" (26.01mm)	1.024" (26.01mm)
RoHS Status	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.90.4000	8536.90.4000
Product Status	Obsolete	Active
Termination Style	Screw	Screw - Rising Cage Clamp

Engineering Selection Recommendations

The Phoenix Contact 1792401 is a direct functional equivalent to the 5451129 for applications requiring 18-position, 5.08mm pitch terminal block plugs with 90° free-hanging configuration. Key selection factors:

Product Status: The 5451129 is obsolete, while the 1792401 maintains active product status with ongoing manufacturer support and availability.

Electrical Compatibility: Both parts meet identical IEC electrical specifications (12A, 630V). The 1792401 provides enhanced UL current rating (15A vs. 12A), offering superior performance margin in UL-regulated applications.

Compliance & Certifications: Both components are UL94 V-0 rated and RoHS compliant. The 1792401 carries ROHS3 compliance, reflecting current regulatory alignment. Both are classified as EAR99 and share identical HTSUS coding.

Termination Technology: The 1792401 incorporates Rising Cage Clamp termination, an advancement over standard screw termination, while maintaining identical screw torque specifications and wire gauge compatibility.

Physical & Mechanical Compatibility: Identical pitch, position count, wire entry angle, mounting type, and insulation height ensure direct mechanical interchangeability with existing mating connectors and installation fixtures.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1792401 directly replace the 5451129 in existing installations?

A: Yes. Both components share identical mechanical dimensions (18 positions, 5.08mm pitch, 90° wire entry), electrical ratings (IEC: 12A/630V), wire gauge compatibility (12-30 AWG), and housing materials. The 1792401 is mechanically and electrically interchangeable.

Q: What is the difference in termination technology between these parts?

A: The 5451129 uses standard screw termination. The 1792401 uses Rising Cage Clamp termination, which provides enhanced wire retention and simplified installation while maintaining identical screw torque specifications (0.5-0.6 Nm).

Q: Are there compliance differences between the two parts?

A: Both are UL94 V-0 rated and RoHS compliant. The 1792401 carries ROHS3 certification, representing current regulatory standards. Both share identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications.

Q: Why is the 5451129 listed as obsolete?

A: The 5451129 has been discontinued by Phoenix Contact. The 1792401 represents the active product line equivalent, ensuring continued availability and manufacturer support.

Q: Does the higher UL current rating of the 1792401 (15A vs. 12A) affect compatibility?

A: No. Higher current ratings indicate enhanced capability and do not affect compatibility. Applications designed for 12A operation remain fully compatible with the 1792401.

Q: Are packaging differences significant for component selection?

A: The 5451129 is packaged as individual units, while the 1792401 is supplied in bulk. This affects procurement and inventory management but does not impact electrical or mechanical performance.

Q: What wire gauges are supported by both parts?

A: Both components accept 12-30 AWG wire (0.2-2.5mm²) with 7mm strip length, ensuring compatibility across standard industrial wiring specifications.

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