Weidmüller 1748200000 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Weidmüller 1748200000 is a 12-position terminal block plug with female sockets, 0.138" (4.60mm) pitch, designed for 180° free-hanging in-line applications. This component features screwless spring cage tension clamp termination and is part of the Omnimate B2L series. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new designs requiring equivalent functionality.

Substiute Parts

1748200000

WeidmüllerIn Stock: 11061748200000 Datasheet

Current PartRFQ

1277900000

WeidmüllerIn Stock: 8701277900000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Weidmüller 1748200000 is determined by the following critical parameters that must remain consistent:

• Connector Type & Configuration: 12-position plug with female sockets
• Pitch Specification: 0.138" (4.60mm) - mechanical and electrical compatibility requirement
• Mounting Orientation: 180° free-hanging in-line configuration
• Electrical Ratings: Current and voltage ratings must meet or exceed IEC and UL specifications
• Wire Gauge Compatibility: Acceptable wire gauge range must accommodate 16-28 AWG (0.2-1mm²)
• Termination Interface: Screwless spring-based connection systems
• Environmental Compliance: RoHS compliance and operating temperature range

The substitute part Weidmüller 1277900000 maintains compatibility across these critical parameters while offering enhanced electrical performance and active product status.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 1277900000 is the manufacturer-recommended substitute for the obsolete 1748200000. Both components maintain identical mechanical compatibility through matching pitch (4.60mm), connector configuration (12-position female sockets), and mounting orientation (180° free-hanging in-line).

The substitute part offers improved electrical performance with higher IEC current rating (13.4A vs. 10.3A) and voltage rating (320V vs. 250V), along with an extended operating temperature range (-50°C to 120°C vs. -50°C to 100°C). Both parts maintain equivalent compliance certifications: RoHS compliance, UL94 V-0 flammability rating, and IP20 ingress protection.

The primary design difference lies in termination technology: the 1748200000 uses spring cage tension clamp termination, while the 1277900000 employs leg spring push-in spring termination. Both are screwless systems suitable for the specified wire gauge ranges. The substitute accommodates wire gauges from 16-26 AWG (0.14-1.5mm²), which overlaps the original specification of 16-28 AWG (0.2-1mm²).

Active product status of the 1277900000 ensures ongoing availability and manufacturer support for new designs and system maintenance.

Frequently Asked Questions (FAQ)

Q: Can the 1277900000 directly replace the 1748200000 in existing installations?

A: Yes. Both components share identical pitch (4.60mm), connector configuration (12-position female sockets), and mounting orientation (180° free-hanging in-line). The mechanical interface is compatible. The substitute offers equal or superior electrical ratings under both IEC and UL standards.

Q: What is the difference in termination technology between these parts?

A: The 1748200000 uses spring cage tension clamp termination, while the 1277900000 uses leg spring push-in spring termination. Both are screwless systems. The push-in spring design of the substitute may provide different insertion force characteristics, but both maintain the same electrical and mechanical interface standards.

Q: Are there wire gauge compatibility concerns?

A: The 1748200000 accepts 16-28 AWG (0.2-1mm²). The 1277900000 accepts 16-26 AWG (0.14-1.5mm²). For wire gauges 16-26 AWG, both parts are compatible. Wire gauges 27-28 AWG are supported only by the original part; however, the substitute supports wire gauges down to 0.14mm², providing additional flexibility in the lower gauge range.

Q: Does the substitute meet the same compliance requirements?

A: Yes. Both parts are RoHS compliant, carry UL94 V-0 flammability rating, and maintain IP20 ingress protection. Both use copper alloy contacts with tin mating finish and are manufactured from equivalent housing materials suitable for the specified operating temperature ranges.

Q: Why is the original part obsolete?

A: The 1748200000 is listed as obsolete by the manufacturer. The 1277900000 represents the active product line continuation, offering improved electrical performance and extended temperature range while maintaining mechanical compatibility.

Q: What is the inventory status of these parts?

A: The 1748200000 (obsolete) has 1078 pieces in stock. The 1277900000 (active substitute) has 814 pieces in stock. For new designs, the active substitute is the recommended selection.