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ABB - Installation Products ADR50-32 - Type ADR-ALCUL Three-Conductor, Two-Hole Mount for Conductor Range Max 500 kcmil, Min 4 Str, 1/2 Inch Bolt Hole, NEMA Spacing 1-3/4 Inch Centers, Length 4-11/16 Inch, Tin Plated
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ABB Installation Products ADR50-32 Type ADR-ALCUL Three-Conductor, Two-Hole Mount for Conductor Range Max 500 kcmil, Min 4…

UPC: 783786610297


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Overview

The ABB ADR-ALCUL Type Three-Conductor Lug (SKU ADR50-32) is a high-capacity mechanical connector engineered for heavy-duty electrical terminations in industrial power distribution systems. This lug accommodates conductor sizes from 4 AWG (stranded) up to 500 kcmil, supporting both aluminum and copper conductors for versatile application in motor connections, switchgear, and panelboard installations. The ADR50-32 features a 1/2-inch bolt hole with NEMA-standard 1-3/4-inch center spacing, ensuring compatibility with existing infrastructure and standardized mounting patterns. With an overall length of 4-11/16 inches, this lug provides ample conductor entry space while maintaining a compact footprint for panel integration. The tin-plated copper construction delivers superior conductivity and corrosion resistance, critical for long-term reliability in harsh environments. Designed for three-conductor systems, the ADR-ALCUL series is part of ABB's Blackburn mechanical connector line, known for dual-rated performance meeting UL 486B and AL9CU standards. This lug is ideal for applications requiring high current capacity and secure mechanical connections, including power distribution panels, motor control centers, and industrial machinery terminations.
  • Accommodates conductor range: 4 AWG to 500 kcmil (aluminum or copper)
  • Overall length: 4-11/16 inches with tin-plated copper construction
  • Three-conductor design for power distribution and motor connections
  • Tin plated for enhanced conductivity and corrosion resistance
  • Designed for three-conductor electrical connections

Specifications

Finish
Tinned
Material
Aluminum
Mounting Hole Spacing
1/2 in
Number of Conductors
3
Number of Mounting Holes
2
Special Features
Easy Installation - no special tools required
Standard
UL E9809
Type
Dual-Rated Mechanical Connector
Package Dimensions (L x W x H)
6.75 IN x 5.25 IN x 3.63 IN
Package Dimensions (L x W x H)
17.145 cm x 13.335 cm x 9.2202 cm
Package Weight (Imperial)
1.2100 L
Package Weight (Metric)
0.5490 kg
2 Port Aluminum Dual Rated Transformer Stud Connector 350 MCM -6 AWG with 5/8" Stud Aluminum dual rated transformer stud connectors are versatile and reusable set screw connectors made from 6061T-6 aluminum alloy for superior electrical and mechanical performance. Clear plated for low contact resistance- stud is tin plated copper which provides low contact resistance for connection to transformer. For use with copper and aluminum conductors. Meets or exceeds ANSI C119.4 Class A. Rated 600V. Temperature rating 90 degrees C.

TS350-2

2 Port Aluminum Dual Rated Transformer Stud Connector 350 MCM -6 AWG with 5/8" Stud Aluminum dual rated transformer stud connectors are versatile and reusable set screw connectors made from 6061T-6 aluminum alloy for superior electrical and mechanical performance. Clear plated for low contact resistance- stud is tin plated copper which provides low contact resistance for connection to transformer. For use with copper and aluminum conductors. Meets or exceeds ANSI C119.4 Class A. Rated 600V. Temperature rating 90 degrees C.
The PCSB4-3S-12Y Multi-Tap Mechanical Lug has a flexible design that can be used as a tap, splice, or dead-end Lug. Made from high strength, extruded aluminum alloy to provide premium electrical and mechanical performance. Insulated with clear PVC to eliminate the need for taping and allow for visual inspection of the complete conductor insertion. UL Listed and CSA Certified.

PCSB4-3S-12Y

The PCSB4-3S-12Y Multi-Tap Mechanical Lug has a flexible design that can be used as a tap, splice, or dead-end Lug. Made from high strength, extruded aluminum alloy to provide premium electrical and mechanical performance. Insulated with clear PVC to eliminate the need for taping and allow for visual inspection of the complete conductor insertion. UL Listed and CSA Certified.
AL 1CNDTR 1HOLE MOUNT 6-350STR TP

ADR35

AL 1CNDTR 1HOLE MOUNT 6-350STR TP
Type ADR-ALCUL Single-Conductor, Two-Hole Mount for Conductor Range Max 600 kcmil, Min 2 Str.

ADR60-12D

Type ADR-ALCUL Single-Conductor, Two-Hole Mount for Conductor Range Max 600 kcmil, Min 2 Str.
Type ADR-ALCUL Single-Conductor, One-Hole Mount, Conductor Range Max 600 kcmil, (2) 250 kcmil, Min 4 Str. (2) 1/0 Str.

ADR6004

Type ADR-ALCUL Single-Conductor, One-Hole Mount, Conductor Range Max 600 kcmil, (2) 250 kcmil, Min 4 Str. (2) 1/0 Str.
Type ADR-ALCUL Single-Conductor, One-Hole Mount for Conductor Range Max 800 kcmil, Min 300 kcmil

ADR80

Type ADR-ALCUL Single-Conductor, One-Hole Mount for Conductor Range Max 800 kcmil, Min 300 kcmil
Type ADR-ALCUL Two-Conductor, Two-Hole Mount for Conductor Range Max 800 kcmil, Min 300 kcmil

ADR80-22D

Type ADR-ALCUL Two-Conductor, Two-Hole Mount for Conductor Range Max 800 kcmil, Min 300 kcmil
Type ADR-ALCUL Three-Conductor, Two-Hole Mount for Conductor Range Max 800 kcmil, Min 300 kcmil

ADR80-32

Type ADR-ALCUL Three-Conductor, Two-Hole Mount for Conductor Range Max 800 kcmil, Min 300 kcmil

Frequently Asked Questions

What is the bolt hole size for the ADR50-32?

The ADR50-32 features a 1/2-inch bolt hole for secure mechanical fastening.

What is the overall length of the ADR50-32?

The ADR50-32 has an overall length of 4-11/16 inches.

What conductor sizes does the ADR50-32 support?

The ADR50-32 accommodates conductors from a minimum of 4 AWG (stranded) up to a maximum of 500 kcmil for both aluminum and copper materials.

What are the NEMA spacing requirements for this lug?

The ADR50-32 follows NEMA spacing standards with 1-3/4-inch centers for standardized installation.

Is the ADR50-32 suitable for both aluminum and copper conductors?

Yes, the ADR50-32 is dual-rated for both aluminum and copper conductors.

How to Install Blackburn Aluminum Dual Rated Connectors

This guide provides step-by-step instructions for safely installing Blackburn Aluminum Dual Rated Connectors with aluminum or copper conductors, including conductor preparation and proper torque application.

Estimated time: 30m

Tools needed:

Wire strippers, Wire brush, Torque wrench

Supplies needed:

Blackburn Contax Type CT or Weaver Type CP oxide inhibiting compound, Mounting hardware, Flat and Belleville washers

  1. De-energize Circuit and Check Conductor Compatibility

    CAUTION: De-energize the circuit before installing connectors to prevent electrical shock. Check the conductor size marked on the connector to ensure it is the correct connector for the conductor size you intend to use.

  2. Strip Conductor Insulation

    Carefully strip the conductor insulation, avoiding any damage to the conductor strands. Use the length of the connector barrel to measure the appropriate strip length (see Figure 1 in the original documentation).

  3. Prepare Conductor and Apply Oxide Inhibitor

    Wire brush the conductor. If using an aluminum conductor, apply Blackburn® Contax® Type CT or Weaver Type CP oxide inhibiting compound. Fully insert the conductor into the connector and wipe off any excess oxide inhibitor (see Figure 2 & 3 in the original documentation).

  4. Torque the Connector Setscrew

    Identify the maximum conductor size the connector accommodates. Apply the recommended tightening torque to the setscrew in accordance with TABLE 1 in the original documentation (see Figure 4 in the original documentation). Each connector has one tightening torque range regardless of the conductor size it accommodates.

  5. Apply Oxide Inhibitor to Contact Surface

    Prior to mounting the connector, apply Blackburn® Contax® Type CT or Weaver Type CP oxide inhibiting compound to the flat contact surface of the connector.

  6. Torque Mounting Hardware

    Torque the mounting hardware to the values shown in TABLE 2 in the original documentation (see Figure 4 in the original documentation). For good installation practice, use flat and Belleville washers in conjunction with the mounting hardware, although the connectors will perform satisfactorily without them.

Frequently Asked Questions about ABB - Installation Products

How are Thomas and Betts products typically installed?

Thomas and Betts products are installed using a variety of methods tailored to specific applications, including the use of flexible cords and cable fittings, non-metallic cable glands, and armored cable fittings. Proper selection of fittings is crucial to match the cable type and installation environment, ensuring durability and preventing physical damage. Tools such as the Blackburn® Comfort Crimp® and HEX-FLEX® systems enhance installation efficiency and reliability, reducing labor time and ensuring secure connections.

What accessories are available for Thomas and Betts products?

Thomas and Betts offers a comprehensive range of accessories for their products, including various cord and cable fittings, non-metallic cable glands, service entrance cable fittings, and armored cable fittings. Their accessories are designed to enhance installation efficiency and ensure compatibility with different cable types and environmental conditions, providing reliable connections for a wide array of applications.

What environmental ratings do Thomas and Betts products have?

Thomas and Betts products feature robust environmental ratings, including NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications, as well as IEC 60529 IP66 protection. These ratings ensure that their products are designed to withstand harsh industrial environments, with capabilities to resist dust, water, and corrosion, and operate effectively in a wide temperature range.

What communication protocols do Thomas and Betts products support?

Thomas and Betts products support a wide range of industrial communication protocols, including Ethernet, DeviceNet, PROFIBUS, Modbus, CANopen, and others. This extensive compatibility ensures seamless integration and reliable communication across various industrial automation systems, catering to diverse application needs.

What are the key features of Thomas and Betts products?

Thomas and Betts products are known for their innovative designs, high performance, and compliance with industry standards such as the National Electrical Code and Underwriters' Laboratories. They offer a comprehensive range of rugged and reliable electrical fittings, including liquidtight and dust-tight connections, which enhance installation efficiency and reduce overall project costs. Their products are engineered for durability in harsh environments, ensuring long-term reliability and lower installed costs.

What are the main product lines offered by Thomas and Betts?

Thomas and Betts offers a comprehensive range of product lines including electrical connectors, cable management systems, grounding and bonding solutions, and industrial automation components. Their products are designed for durability and reliability in demanding industrial environments, ensuring optimal performance and safety across various applications.

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Thomas and Betts offers comprehensive technical support, including access to field application engineers for onsite training and installation assistance. Their technical support staff is available to address inquiries related to product specifications and installation practices, ensuring optimal performance and safety of electrical systems. Additionally, they provide a variety of training programs to enhance the knowledge and skills of users in the field.

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Thomas and Betts products comply with critical international certifications including UL (Underwriters Laboratories), CSA (Canadian Standards Association), and CE (European Community). Our products are designed to meet rigorous industrial standards such as NEMA enclosure ratings and IEC 60529 IP ratings, ensuring safety and reliability across various industrial applications.

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Ocal offers a comprehensive range of corrosion-resistant conduit systems, including PVC-coated conduit and fittings, conduit bodies, hazardous location fittings, and strut accessories. Their products are designed to provide superior corrosion protection, featuring a hot-dipped galvanizing process and UL listed Type 4X PVC-coated conduit bodies, ensuring durability in the most demanding environments.