Phoenix Contact 5452751 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 5452751 is a 2-position terminal block plug with female sockets, 0.200" (5.08mm) pitch, designed for 90° free-hanging in-line applications. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The part operates at 12A (IEC) / 12A (UL) and 320V (IEC) / 300V (UL), accommodating wire gauges from 12-30 AWG (0.2-2.5mm²) with screw termination and M3 fasteners.

Key Parameters

Parameter	Value
Number of Positions	2
Pitch	0.200" (5.08mm)
Plug Wire Entry	90°
Mounting Type	Free Hanging (In-Line)
Current - IEC	12A
Voltage - IEC	320V
Wire Gauge Range	12-30 AWG (0.2-2.5mm²)
Termination Style	Screw
Screw Size	M3
Torque Specification	0.5-0.6 Nm (4.4-5.3 Lb-In)

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 5452751 is determined by strict alignment of the following parameters:

Position count and pitch: Must be 2 positions at 0.200" (5.08mm) spacing
Connector type and orientation: Female socket plugs with 90° wire entry for free-hanging in-line mounting
Electrical ratings: Current and voltage ratings must meet or exceed IEC/UL specifications (12A minimum, 320V IEC minimum)
Wire compatibility: Support for 12-30 AWG (0.2-2.5mm²) wire gauges
Termination interface: Screw-based termination with M3 fasteners and matching torque specifications
Physical dimensions: Insulation height of 1.024" (26.01mm) and wire strip length of 7mm

The substitute part Phoenix Contact 1740903 satisfies all mandatory substitution criteria within these parameters.

Parameter Comparison

Parameter	5452751 (Main Part)	1740903 (Substitute)
Manufacturer	Phoenix Contact	Phoenix Contact
Category	Terminal Blocks	Terminal Blocks
Type	Plug, Female Sockets	Plug, Female Sockets
Number of Positions	2	2
Pitch	0.200" (5.08mm)	0.200" (5.08mm)
Plug Wire Entry	90°	90°
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Current - IEC	12A	12A
Voltage - IEC	320V	250V
Current - UL	12A	Not specified
Voltage - UL	300V	Not specified
Wire Gauge Range - AWG	12-30 AWG	12-30 AWG
Wire Gauge Range - mm²	0.2-2.5mm²	0.2-2.5mm²
Termination Style	Screw	Screw - Rising Cage Clamp
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
Insulation Height	1.024" (26.01mm)	1.024" (26.01mm)
Color	Black	Black
Contact Mating Finish	Tin	Tin
Features	Retention Latches (Wire Side)	Retention Latches (Wire Side)
Product Status	Obsolete	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS Code	8536.90.4000	8536.90.4000

Engineering Selection Recommendations

The Phoenix Contact 1740903 is a direct functional substitute for the obsolete 5452751. Both components share identical mechanical interfaces, wire compatibility, and core electrical specifications for 12A operation at the specified pitch and orientation.

The 1740903 offers the advantage of active product status, ensuring continued availability and supply chain reliability. The component carries ROHS3 compliance, representing current regulatory alignment compared to the RoHS compliance of the 5452751. Both parts maintain identical MSL ratings and export classifications.

The voltage rating differential (250V IEC for 1740903 versus 320V IEC for 5452751) must be evaluated within the context of the specific application. For applications operating at or below 250V IEC, the 1740903 provides full compatibility. For applications requiring the full 320V IEC rating of the original part, this parameter requires assessment against actual system voltage requirements.

The termination mechanism enhancement in the 1740903 (rising cage clamp technology) represents a design improvement while maintaining the same M3 screw interface and torque specifications, ensuring mechanical compatibility with existing installation procedures.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1740903 directly replace the 5452751 in all applications?

A: The 1740903 provides direct mechanical and electrical compatibility for applications operating at 250V IEC or below. The primary consideration is the voltage rating differential. If your application operates within the 250V IEC specification, substitution is straightforward. Applications requiring the full 320V IEC rating of the original part require voltage assessment.

Q: What is the significance of the "rising cage clamp" termination in the 1740903?

A: The rising cage clamp is an enhanced termination mechanism that maintains compatibility with the M3 screw interface and identical torque specifications (0.5-0.6 Nm). This represents a design improvement in the termination technology while preserving the same installation procedures and tooling requirements.

Q: Are there packaging differences between these parts?

A: The 5452751 is listed with unspecified packaging, while the 1740903 is supplied in bulk packaging. Verify packaging requirements for your procurement and assembly processes.

Q: Do both parts support the same wire gauge range?

A: Yes. Both the 5452751 and 1740903 accommodate 12-30 AWG (0.2-2.5mm²) wire gauges with identical 7mm wire strip length specifications.

Q: What compliance certifications apply to the 1740903?

A: The 1740903 carries ROHS3 compliance, REACH unaffected status, and EAR99 export classification. These certifications align with current regulatory requirements for electronic components.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both components share identical insulation height (1.024" / 26.01mm), wire strip length (7mm), and all other specified physical dimensions, ensuring direct mechanical interchangeability.

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