Weidmüller 1645640000 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Weidmüller 1645640000 is a 22-position terminal block plug with male pins, 0.200" (5.08mm) pitch, designed for 180° free-hanging in-line applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations. The part operates within IEC ratings of 12A at 250V and UL ratings of 15A at 300V, with screw-clamping termination suitable for wire gauges 12-28 AWG.

Substiute Parts

1645640000

WeidmüllerIn Stock: 8461645640000 Datasheet

Current PartRFQ

1786378

Phoenix ContactIn Stock: 8231786378 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Weidmüller 1645640000 is determined by the following critical parameters:

• Position Count & Pitch: 22 positions at 0.200" (5.08mm) spacing (mechanical compatibility with mating receptacles)
• Connector Type & Orientation: Male pin plug with 180° free-hanging in-line configuration
• Electrical Ratings: Minimum IEC 12A at 250V and UL 15A at 300V performance
• Termination Method: Screw-based clamping mechanism for wire attachment
• Wire Gauge Compatibility: Support for 12-28 AWG conductor sizes
• Flammability Compliance: UL94 V-0 material rating
• Operating Temperature Range: -20°C to 100°C minimum

The Phoenix Contact 1786378 qualifies as a functional substitute based on matching position count, pitch, connector type, orientation, and core electrical performance within specified ranges.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1786378 serves as a direct functional substitute for the obsolete Weidmüller 1645640000 based on the following engineering criteria:

Mechanical Compatibility: Both components share identical position count (22), pitch (5.08mm), connector type (male pin plug), and orientation (180° free-hanging in-line). Physical mating with corresponding receptacles is assured.

Electrical Performance: The Phoenix Contact part meets or exceeds the electrical requirements of the original component. IEC current rating is identical at 12A. IEC voltage rating is higher (630V vs. 250V). UL voltage rating matches at 300V, though UL current is rated at 10A versus the original 15A. Application-specific current requirements must be evaluated against the 10A UL limit.

Compliance & Certification: Both components carry UL94 V-0 flammability ratings, ensuring equivalent material safety performance. The Phoenix Contact part holds RoHS Compliant status and MSL 1 (Unlimited) moisture sensitivity classification, indicating modern manufacturing standards.

Termination & Installation: Both employ screw-based clamping mechanisms. The Phoenix Contact uses a rising cage clamp design versus the Weidmüller tension sleeve approach. Wire strip length is identical (7mm). Screw size differs (M3 vs. M2.5), requiring attention to torque specifications (0.5-0.6 Nm for Phoenix Contact vs. 0.4-0.5 Nm for Weidmüller).

Wire Gauge Support: The Phoenix Contact accommodates 12-30 AWG (0.2-2.5mm²) versus the original 12-28 AWG (2.5mm²), providing extended compatibility with finer gauge conductors.

Production Status: The Phoenix Contact 1786378 is actively manufactured, ensuring long-term availability and supply chain continuity for replacement and new installations.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1786378 directly replace the Weidmüller 1645640000 in existing installations?

A: Yes, for applications operating within the Phoenix Contact electrical ratings. The 10A UL current limit must be verified against system requirements. If the original application requires the full 15A UL rating, the Phoenix Contact part is not suitable. Mechanical fit with mating receptacles is assured due to identical pitch and position count.

Q: What is the significance of the different termination styles (Clamping Yoke vs. Rising Cage Clamp)?

A: Both are screw-based clamping mechanisms suitable for secure wire attachment. The rising cage clamp design of the Phoenix Contact may offer different mechanical advantages in specific installation environments. Installation procedures should follow the respective manufacturer documentation.

Q: Why does the Phoenix Contact part have a different screw size (M3 vs. M2.5)?

A: The M3 screw in the Phoenix Contact requires different torque application (0.5-0.6 Nm vs. 0.4-0.5 Nm). Proper torque specification must be observed during installation to ensure reliable electrical contact and prevent wire damage.

Q: Is the extended wire gauge range (12-30 AWG) of the Phoenix Contact a compatibility advantage?

A: The extended range provides flexibility for applications using finer gauge conductors (29-30 AWG). For standard applications using 12-28 AWG, both components are equivalent in this parameter.

Q: What is the impact of the higher IEC voltage rating (630V vs. 250V) of the Phoenix Contact?

A: The higher rating provides additional safety margin in high-voltage applications. For systems operating at or below 250V IEC, both components are equivalent. The Phoenix Contact is suitable for higher-voltage installations where the original part would not be rated.

Q: Are there packaging or inventory considerations for substitution?

A: The Weidmüller part is obsolete with 805 units in stock. The Phoenix Contact 1786378 is actively produced with 715 units currently available. For new designs or long-term production, the Phoenix Contact ensures ongoing supply chain access.