Weidmüller 1751440000 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Weidmüller 1751440000 is an 8-position terminal block plug with female sockets, 4.6mm pitch, designed for free-hanging in-line applications. This component features IDC termination and operates across IEC and UL standards. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where this connector type is required.

Substiute Parts

1751440000

WeidmüllerIn Stock: 9341751440000 Datasheet

Current PartRFQ

1597420000

WeidmüllerIn Stock: 22611597420000 Datasheet

MFR RecommendedRFQ

2459110000

WeidmüllerIn Stock: 7682459110000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 1751440000 is determined by the following critical parameters that must align with the original component:

Core Compatibility Criteria:

• 8-position configuration
• 4.6mm (0.138") pitch spacing
• Female socket type
• Free-hanging in-line mounting
• Omnimate BL series family
• Orange color
• Copper alloy contacts with tin mating finish
• PBT or equivalent housing material
• UL94 V-0 flammability rating
• IP20 ingress protection
• RoHS compliance

Acceptable Variations:

• Termination style (IDC, screw-clamping, or screwless spring cage)
• Wire gauge range (must accommodate 20-22 AWG minimum)
• Current and voltage ratings (must meet or exceed IEC 6A/250V and UL 7A/300V)
• Operating temperature range (must include -50°C to 80°C minimum)
• Plug wire entry angle (90°, 180°, or 270°)

The two substitute parts listed below maintain all core compatibility criteria while offering enhanced electrical performance and alternative termination technologies.

Parameter Comparison

Engineering Selection Recommendations

1597420000 - Screw-Clamping Termination Variant

This substitute maintains full mechanical and electrical compatibility with the 1751440000 while offering screw-clamping termination. The part is active in production with enhanced current capacity (17A IEC vs. 6A) and voltage rating (320V IEC vs. 250V). Wire gauge accommodation extends to 14-28 AWG, providing broader wire compatibility. Operating temperature range extends to 100°C. The M2 screw termination with 0.2-0.25 Nm torque specification provides secure, field-serviceable connections. This variant is suitable for applications requiring tool-based termination and higher current handling.

2459110000 - Screwless Spring Cage Termination Variant

This substitute provides screwless spring cage termination with push-button actuation, eliminating the need for termination tools. Current capacity reaches 17.5A IEC with 320V rating. Wire gauge range spans 16-26 AWG. Operating temperature extends to 120°C, the highest among all three options. Housing material transitions to glass-filled polyamide for enhanced mechanical properties. This variant is optimal for applications requiring rapid assembly, frequent reconfiguration, or environments where tool-based termination is impractical.

Compliance and Regulatory Status

All three parts maintain RoHS compliance and UL94 V-0 flammability certification. Both substitute parts are active products with established supply chains, addressing the obsolescence status of the original 1751440000.

Frequently Asked Questions (FAQ)

Q: Can 1597420000 or 2459110000 directly replace 1751440000 in existing installations?

A: Both substitutes maintain the 8-position, 4.6mm pitch configuration and free-hanging in-line mounting required for mechanical fit. However, the wire entry angle differs: the original supports 90° and 270° entry, while substitutes feature 180° entry. Verify cable routing compatibility before installation. Electrical ratings exceed the original specification, ensuring safe operation in existing circuits.

Q: What is the primary difference between the two substitute parts?

A: Termination method is the primary distinction. The 1597420000 uses screw-clamping termination requiring an M2 screwdriver, while the 2459110000 employs screwless spring cage termination with push-button actuation. Both achieve equivalent electrical performance and mechanical security.

Q: Are the substitute parts compatible with the same mating connectors as the original 1751440000?

A: Yes. All three parts maintain the same 8-position, 4.6mm pitch female socket configuration and Omnimate BL series family designation, ensuring compatibility with corresponding male header connectors.

Q: What wire gauges are supported by each part?

A: The original 1751440000 accommodates 20-22 AWG (0.35-0.5mm²). The 1597420000 extends this to 14-28 AWG (0.2-1.5mm²), and the 2459110000 supports 16-26 AWG (0.14-1.5mm²). Both substitutes accept the original wire gauge range plus additional sizes.

Q: Which substitute is better for high-temperature applications?

A: The 2459110000 offers the highest operating temperature range (-50°C to 120°C) compared to the original (-50°C to 80°C) and the 1597420000 (-50°C to 100°C).

Q: Are both substitutes available in the same packaging as the original?

A: The original 1751440000 packaging is listed as unspecified. Both substitutes are available in bulk packaging, suitable for production and field replacement applications.

Q: Do the substitute parts require different assembly procedures?

A: Yes. The 1597420000 requires wire termination via M2 screw with 0.2-0.25 Nm torque and 6mm wire strip length. The 2459110000 uses push-button actuation with 8mm wire strip length and no torque specification. Refer to manufacturer documentation for detailed assembly procedures specific to each termination style.