Phoenix Contact 1704178 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1704178 is a 3-position terminal block plug with female sockets, designed for 0.197" (5.00mm) pitch applications with 180° free-hanging in-line mounting. This component features screw-rising cage clamp termination and supports wire gauges from 12-26 AWG (0.5-4mm²). The part is classified as obsolete, making identification of functionally equivalent substitutes essential for ongoing system maintenance and new design implementations.

Substiute Parts

1704178

Phoenix ContactIn Stock: 9561704178 Datasheet

Current PartRFQ

691385700003

Würth ElektronikIn Stock: 1186691385700003 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1704178 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Number of positions: 3
• Pitch: 0.197" (5.00mm)
• Plug wire entry orientation: 180°
• Mounting type: Free hanging (in-line)
• Type: Plug with female sockets
• Termination method: Screw-based

Allowable Parameter Variations: Substitute parts may differ in the following parameters while maintaining functional compatibility:

• Current rating (IEC): Substitute must meet or exceed 14.6A
• Voltage rating (IEC): Substitute must meet or exceed 630V
• Wire gauge range: Substitute must accommodate the 12-26 AWG range or a subset thereof
• Housing material: May vary (polyamide, polycarbonate, etc.)
• Contact mating finish: May vary
• Screw size and torque specifications: May vary within mechanical compatibility limits
• Operating temperature range: May vary
• Color: May vary

The Würth Elektronik 691385700003 qualifies as a substitute based on matching all mandatory criteria while meeting or exceeding electrical performance requirements.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 691385700003 is a qualified substitute for the obsolete Phoenix Contact 1704178 based on the following engineering criteria:

Mechanical Compatibility: Both parts share identical pitch (5.00mm), position count (3), wire entry orientation (180°), and mounting configuration (free hanging in-line). Physical interchangeability is confirmed.

Electrical Performance: The Würth Elektronik substitute exceeds the IEC current rating (16A vs. 14.6A) and meets UL current requirements (14A vs. 10A). The IEC voltage rating of the substitute (250V) is lower than the original (630V); applications requiring the full 630V IEC rating must evaluate this difference against actual system voltage requirements.

Wire Gauge Accommodation: The substitute supports 12-24 AWG, which covers the majority of the original's 12-26 AWG range. Applications requiring 25-26 AWG termination must verify compatibility or consider alternative substitutes.

Compliance Status: Both parts carry UL94 V-0 flammability certification. The substitute holds active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Termination Method: Both employ screw-based termination. The original specifies rising cage clamp; the substitute uses standard screw termination. Mechanical compatibility with mating connectors must be verified for specific applications.

Frequently Asked Questions (FAQ)

Q: Can the Würth Elektronik 691385700003 directly replace the Phoenix Contact 1704178 in existing assemblies?

A: Physical and electrical compatibility is confirmed for applications operating within the substitute's rated parameters. The 5.00mm pitch, 3-position configuration, 180° wire entry, and free-hanging mounting are identical. Verify that your application voltage requirement does not exceed 250V IEC, and that wire gauges do not exceed 24 AWG.

Q: What is the significance of the wire gauge difference (12-26 AWG vs. 12-24 AWG)?

A: The original part accommodates 25-26 AWG wire; the substitute terminates at 24 AWG. If your application uses 25-26 AWG conductors, the substitute cannot accommodate these gauges. Verify wire specifications in your design before substitution.

Q: How does the IEC voltage rating difference (630V vs. 250V) affect substitution?

A: The original part is rated for 630V IEC; the substitute is rated for 250V IEC. If your system operates at voltages between 250V and 630V IEC, the substitute is not suitable. Confirm your actual system voltage requirement before proceeding with substitution.

Q: Are the screw termination methods compatible between the two parts?

A: The original specifies rising cage clamp termination; the substitute uses standard screw termination. Both are screw-based systems. Mechanical compatibility depends on the mating connector design. Verify that your mating connector accepts standard screw termination.

Q: What is the packaging difference, and does it affect component selection?

A: The original part number does not specify packaging; the substitute is supplied in trays. Packaging affects handling, storage, and integration into assembly processes. Confirm that tray packaging is compatible with your procurement and assembly workflow.

Q: Are both parts RoHS compliant?

A: Yes. The original is RoHS Compliant; the substitute is ROHS3 Compliant. Both meet current RoHS requirements. The substitute's ROHS3 status ensures compliance with the latest regulatory standards.

Q: What is the operational temperature range for these parts?

A: The original part does not specify an operating temperature range. The substitute operates from -30°C to 130°C. If your application requires operation outside this range, verify compatibility or consider alternative substitutes.