Weidmüller 1637970000 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Weidmüller 1637970000 is an 18-position terminal block plug with female sockets, 5.00mm pitch, and 270° wire entry orientation. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations. The plug features screw-clamping termination, free-hanging mounting, and is rated for 15A (IEC) / 10A (UL) operation across a -50°C to 100°C temperature range.

Substiute Parts

1637970000

WeidmüllerIn Stock: 8291637970000 Datasheet

Current PartRFQ

OSTVM185551

On-Shore TechnologyIn Stock: 1130OSTVM185551 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Weidmüller 1637970000 is determined by the following critical parameters:

Position Count & Pitch Compatibility: The substitute must maintain 18 positions with a pitch specification that accommodates the same connector interface geometry. The original 5.00mm pitch establishes the baseline mechanical compatibility requirement.

Wire Entry Orientation: The 270° wire entry angle is a defining mechanical characteristic. Substitutes with alternative wire entry angles (such as 180° straight entry) represent functional alternatives rather than direct equivalents, as they require different installation geometries and panel layouts.

Termination Method: Screw-based clamping termination is the specified connection mechanism. Substitutes employing alternative termination styles (pressure clips, spring clamps) may introduce different torque specifications and wire preparation requirements.

Electrical Ratings: Current and voltage ratings must meet or exceed the application requirements. The IEC 15A / 400V and UL 10A / 300V ratings establish minimum performance thresholds.

Temperature Range & Material Compliance: Operating temperature limits and RoHS/REACH compliance status are non-negotiable for regulatory and environmental requirements.

The On-Shore Technology OSTVM185551 is identified as a substitute based on matching position count, free-hanging mounting, screw termination, and compliance certifications, despite differences in pitch specification, wire entry angle, and electrical ratings.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The Weidmüller 1637970000 is classified as obsolete. The On-Shore Technology OSTVM185551 maintains active product status, ensuring ongoing availability, technical support, and supply chain continuity.

Compliance & Certification: Both components meet UL94 V-0 flammability requirements and maintain REACH compliance. The OSTVM185551 carries ROHS3 certification, representing current regulatory alignment compared to the legacy RoHS Compliant designation of the original part.

Electrical Performance: The OSTVM185551 provides higher UL current rating (20A versus 10A), exceeding the original specification. Voltage ratings remain equivalent at 300V (UL). The IEC rating for the original part (15A / 400V) has no direct equivalent in the substitute specification, requiring evaluation against actual application requirements.

Mechanical Compatibility: Pitch difference (5.00mm versus 5.08mm) and wire entry angle variation (270° versus 180°) represent mechanical deviations. These differences necessitate physical verification against existing connector interfaces and installation geometries before deployment.

Temperature Range: The OSTVM185551 supports -30°C to 105°C operation, which covers the upper temperature requirement of the original (-50°C to 100°C) but does not extend to the lower -50°C threshold. Applications requiring sub-zero operation below -30°C require alternative evaluation.

Frequently Asked Questions (FAQ)

Q: Can the On-Shore Technology OSTVM185551 directly replace the Weidmüller 1637970000 in existing installations?

A: Direct replacement requires verification of three factors: (1) mechanical compatibility of the 5.08mm pitch with existing mating connectors designed for 5.00mm spacing, (2) accommodation of the 180° straight wire entry angle within the current installation geometry (the original uses 270° orientation), and (3) confirmation that the pressure clip termination method is compatible with existing wire preparation and assembly procedures.

Q: What are the key differences in termination between these two components?

A: The Weidmüller 1637970000 uses screw-clamping with a tension sleeve mechanism, while the OSTVM185551 employs screw-based pressure clip termination. Both are screw-actuated but differ in clamping geometry. Torque specifications are similar (0.4-0.5 Nm versus 0.4 Nm), but the pressure clip design may require different wire stripping lengths and preparation techniques.

Q: Does the higher current rating of the OSTVM185551 (20A) make it suitable for all applications?

A: Higher current rating indicates greater capacity but does not automatically qualify the component for all applications. Substitution suitability depends on matching the specific application's voltage, temperature, wire gauge, and mechanical installation requirements. The original IEC 15A / 400V specification may not have a direct equivalent in the substitute's UL-based ratings.

Q: Are there temperature range limitations when substituting?

A: Yes. The OSTVM185551 operates from -30°C to 105°C, while the original supports -50°C to 100°C. Applications requiring operation below -30°C cannot use the substitute without additional thermal analysis or alternative component selection.

Q: What is the significance of the pitch difference (5.00mm versus 5.08mm)?

A: Pitch determines the spacing between contact positions. A 0.08mm difference (5.08mm - 5.00mm) may appear minor but can prevent mechanical mating with connectors designed for the original 5.00mm specification. Physical compatibility testing is required before field deployment.

Q: How do the wire gauge ranges compare?

A: The Weidmüller 1637970000 accepts 12-26 AWG (0.5-2.5mm²), while the OSTVM185551 accepts 12-22 AWG. The substitute does not accommodate the finer wire gauges (24-26 AWG) supported by the original. Applications using 24-26 AWG wire require alternative evaluation.