NSI Industries AL4-38 - 1 HoleStandard BarrelAluminum Compression Lug4 AWG -3/8 Bolt Standard BarrelAluminum Compression Lugs is a type ofaluminum compression connector that is produced from high conductivityaluminum tubing.Center stop assures proper cable installation.They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed.
NSI Industries

AL4-38

UPC: 662381029980


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Overview

NSI Industries AL4-38 Aluminum Compression Lug is a high-conductivity, tin-plated connector engineered for reliable electrical terminations in industrial and utility applications. Manufactured from premium aluminum tubing with a center stop to ensure proper cable installation, this lug delivers consistent performance across a wide range of environments. The electro-tin plating provides superior corrosion resistance, extending service life in harsh or outdoor conditions where moisture and contaminants are present. Each lug is color-coded (green) and marked with die index information for easy identification and correct crimp tool selection, reducing installation errors and improving workflow efficiency. Listed for 35kV maximum when installed per cable manufacturer specifications, the AL4-38 supports 4 AWG aluminum conductors and accepts a 3/8" bolt, making it ideal for grounding, bonding, and power distribution systems. It is cULus and UL486A/B listed, with a temperature rating of 90°C and voltage rating of 600V (2000V per UL486B), ensuring compliance with NEC and safety standards. Compatible with standard crimp tools such as NSI N1240 and N121D, this lug is pre-filled with oxide inhibitor and capped with a color-coded protective cap to maintain clean contact surfaces during storage and installation. Suitable for Class B or C building wire (copper only), it is widely used in utility substations, renewable energy installations, industrial motor controls, and commercial electrical panels where durable, low-resistance connections are critical.
  • High-conductivity aluminum construction with center stop for proper cable alignment
  • Electro-tin plated for superior corrosion resistance in harsh environments
  • Color-coded (green) and die-index marked for easy tool and application matching
  • UL486A/B and cULus listed for 35kV maximum when installed correctly
  • Accepts 4 AWG aluminum conductors with 3/8" bolt connection
  • Temperature rating: 90°C; Voltage rating: 600V (2000V per UL486B)
  • Pre-filled with oxide inhibitor and capped for clean, reliable terminations

Specifications

Application
Terminate, Splice, Tap Power Connectors
Cable Size
# 4 AWG (STR)
Color
Green
Connection Type
Compression
Environmental Conditions
90 C
Finish
Tin Plated
Material
Aluminum
Mounting
3/8 Mounting Hole
Number Of Holes
1
Size
4 AWG, 3/8" Bolt
Size
L=2.38 - W=.649 - OD=.440 - ID=.252
Special Features
# 4 AWG (STR) - 3/8 Mounting Hole
Standard
UL486A/B
Stud Size
3/8 IN
Type
Standard Barrel - One Hole
Voltage Rating
35 kV
Voltage Rating
600 V
Warranty
1 Year
Package Dimensions (L x W x H)
2.307 IN x 0.567 IN x 0.441 IN
Package Dimensions (L x W x H)
5.8598 cm x 14.4018 mm x 11.2014 mm
Package Weight (Imperial)
0.528 L
Package Weight (Metric)
0.240 kg
1 HoleStandard BarrelAluminum Compression Lug4 AWG - 1/4 Bolt Standard BarrelAluminum Compression Lugs is a type ofaluminum compression connector that is produced from high conductivityaluminum tubing.Center stop assures proper cable installation.They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed.

AL4-14

1 HoleStandard BarrelAluminum Compression Lug4 AWG - 1/4 Bolt Standard BarrelAluminum Compression Lugs is a type ofaluminum compression connector that is produced from high conductivityaluminum tubing.Center stop assures proper cable installation.They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed.
Dual Rated Aluminum Splice 400 MCM Dual Rated Aluminum Splices are a type of aluminum compression connector that is produced from high conductivity aluminum tubing. Center stop assures proper cable installation. Electro-tin plated for corrosion resistance. Color coded and marked with die index information. Pre-filled with oxide inhibitor and capped with color coded cap.

ASC400T

Dual Rated Aluminum Splice 400 MCM Dual Rated Aluminum Splices are a type of aluminum compression connector that is produced from high conductivity aluminum tubing. Center stop assures proper cable installation. Electro-tin plated for corrosion resistance. Color coded and marked with die index information. Pre-filled with oxide inhibitor and capped with color coded cap.
1 HoleStandard BarrelAluminum Compression Lug400MCM -1/2 Bolt Standard BarrelAluminum Compression Lugs is a type ofaluminum compression connector that is produced from high conductivityaluminum tubing.Center stop assures proper cable installation.They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed.

AL400-48

1 HoleStandard BarrelAluminum Compression Lug400MCM -1/2 Bolt Standard BarrelAluminum Compression Lugs is a type ofaluminum compression connector that is produced from high conductivityaluminum tubing.Center stop assures proper cable installation.They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed.
1 HoleStandard BarrelAluminum Compression Lug2/0 AWG -3/8 Bolt Standard BarrelAluminum Compression Lugs is a type ofaluminum compression connector that is produced from high conductivityaluminum tubing.Center stop assures proper cable installation.They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed.

AL2/0-38

1 HoleStandard BarrelAluminum Compression Lug2/0 AWG -3/8 Bolt Standard BarrelAluminum Compression Lugs is a type ofaluminum compression connector that is produced from high conductivityaluminum tubing.Center stop assures proper cable installation.They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed.
2 Hole Long Barrel Copper Compression Lug 4 AWG - 1/4" Bolt - 1" Mounting Hole Spacing Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. Allows easy inspection of the termination to assure complete cable insertion. Tin-plated to provide corrosion and low contact resistance. Marked with die index and color coded. Listed for 35KV maximum when properly installed. Rated 600V. cULus 486A/B Listed. UL467 Listed on sizes 6 AWG - 3/0 AWG. Temperature rating 90 degrees C.

L4N-14

2 Hole Long Barrel Copper Compression Lug 4 AWG - 1/4" Bolt - 1" Mounting Hole Spacing Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. Allows easy inspection of the termination to assure complete cable insertion. Tin-plated to provide corrosion and low contact resistance. Marked with die index and color coded. Listed for 35KV maximum when properly installed. Rated 600V. cULus 486A/B Listed. UL467 Listed on sizes 6 AWG - 3/0 AWG. Temperature rating 90 degrees C.
2 Hole Long Barrel Copper Compression Lug 4 AWG - 1/2" Bolt Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. Allows easy inspection of the termination to assure complete cable insertion. Tin-plated to provide corrosion and low contact resistance. Marked with die index and color coded. Listed for 35KV maximum when properly installed. Rated 600V. cULus 486A/B Listed. UL467 Listed on sizes 6 AWG - 3/0 AWG. Temperature rating 90 degrees C.

L4N

2 Hole Long Barrel Copper Compression Lug 4 AWG - 1/2" Bolt Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. Allows easy inspection of the termination to assure complete cable insertion. Tin-plated to provide corrosion and low contact resistance. Marked with die index and color coded. Listed for 35KV maximum when properly installed. Rated 600V. cULus 486A/B Listed. UL467 Listed on sizes 6 AWG - 3/0 AWG. Temperature rating 90 degrees C.
2 Hole Short Barrel Copper Compression Lug for Flexible Copper Cable 600 MCM- 1/2" Bolt Compression lugs for flexible copper cables are connects that have a gentle, continuous flared end to ensure ease of cable insertion of flexible and extra flexible cables such as locomotive, welding, mining cable and more. The flared end also reduces pressure on the cable strands after installation and protects them from chafing and breakage as a result of cable movement. Tin-plated for corrosion resistance. Rated 600 volts for copper cables only. Single mounting hole.

GL600NB

2 Hole Short Barrel Copper Compression Lug for Flexible Copper Cable 600 MCM- 1/2" Bolt Compression lugs for flexible copper cables are connects that have a gentle, continuous flared end to ensure ease of cable insertion of flexible and extra flexible cables such as locomotive, welding, mining cable and more. The flared end also reduces pressure on the cable strands after installation and protects them from chafing and breakage as a result of cable movement. Tin-plated for corrosion resistance. Rated 600 volts for copper cables only. Single mounting hole.
2 Hole Long Barrel Copper Compression Lug 1 AWG - 3/8" Bolt Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. Allows easy inspection of the termination to assure complete cable insertion. Tin-plated to provide corrosion and low contact resistance. Marked with die index and color coded. Listed for 35KV maximum when properly installed. Rated 600V. cULus 486A/B Listed. UL467 Listed on sizes 6 AWG - 3/0 AWG. Temperature rating 90 degrees C.

L1N-38

2 Hole Long Barrel Copper Compression Lug 1 AWG - 3/8" Bolt Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. Allows easy inspection of the termination to assure complete cable insertion. Tin-plated to provide corrosion and low contact resistance. Marked with die index and color coded. Listed for 35KV maximum when properly installed. Rated 600V. cULus 486A/B Listed. UL467 Listed on sizes 6 AWG - 3/0 AWG. Temperature rating 90 degrees C.
2Hole Long Barrel Copper Compression Lug600 MCM-3/8" Bolt Long Barrel Copper Compression Lugs is a type of copper compression connector that is produced from high conductivity copper tubing. They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed.

L600N-38

2Hole Long Barrel Copper Compression Lug600 MCM-3/8" Bolt Long Barrel Copper Compression Lugs is a type of copper compression connector that is produced from high conductivity copper tubing. They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed.
Dual Rated Aluminum Splice 4 AWG Dual Rated Aluminum Splices are a type of aluminum compression connector that is produced from high conductivity aluminum tubing. Center stop assures proper cable installation. Electro-tin plated for corrosion resistance. Color coded and marked with die index information. Pre-filled with oxide inhibitor and capped with color coded cap.

ASC4T

Dual Rated Aluminum Splice 4 AWG Dual Rated Aluminum Splices are a type of aluminum compression connector that is produced from high conductivity aluminum tubing. Center stop assures proper cable installation. Electro-tin plated for corrosion resistance. Color coded and marked with die index information. Pre-filled with oxide inhibitor and capped with color coded cap.
Dual Rated Aluminum Splice 2/0 AWG Dual Rated Aluminum Splices are a type of aluminum compression connector that is produced from high conductivity aluminum tubing. Center stop assures proper cable installation. Electro-tin plated for corrosion resistance. Color coded and marked with die index information. Pre-filled with oxide inhibitor and capped with color coded cap.

ASC2/0T

Dual Rated Aluminum Splice 2/0 AWG Dual Rated Aluminum Splices are a type of aluminum compression connector that is produced from high conductivity aluminum tubing. Center stop assures proper cable installation. Electro-tin plated for corrosion resistance. Color coded and marked with die index information. Pre-filled with oxide inhibitor and capped with color coded cap.
2HoleStandard BarrelAluminum Compression Lug 400 MCM -1/2 Bolt Standard BarrelAluminum Compression Lugs is a type ofaluminum compression connector that is produced from high conductivityaluminum tubing.Center stop assures proper cable installation.They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed.

AL400N

2HoleStandard BarrelAluminum Compression Lug 400 MCM -1/2 Bolt Standard BarrelAluminum Compression Lugs is a type ofaluminum compression connector that is produced from high conductivityaluminum tubing.Center stop assures proper cable installation.They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed.

How to Install Aluminum Compression Connectors

This guide provides step-by-step instructions for installing aluminum compression connectors, ensuring a secure and reliable electrical connection.

Estimated time: 30m

Tools needed:

Wire strippers, Crimping tool, Wire brush

Supplies needed:

Aluminum compression connectors, Cable

  1. Select the appropriate connector

    Choose the correct lug or splice connector based on the size of the cable being installed, ensuring it matches the specifications in the provided chart.

  2. Strip the cable insulation

    Carefully strip the insulation from the conductor without nicking the strands, leaving enough length to fully insert the stripped conductor into the connector barrel.

  3. Clean the conductor

    Use a wire brush to clean the stripped portion of the conductor, removing any oxide films to ensure a good electrical connection.

  4. Insert the conductor into the connector

    Insert the cleaned and stripped conductor completely into the connector barrel, ensuring it fills the barrel completely.

  5. Crimp the connector

    Using the appropriate crimping tool, crimp the connector according to the manufacturer's specifications, ensuring the number of crimps is per side for a splice connector.

  6. Verify the connection

    Inspect the crimped connection to ensure it is secure and that there are no visible gaps or loose strands.

Frequently Asked Questions about NSI Industries

How are Tork products typically installed?

Tork products are typically installed by trained technicians who follow a comprehensive commissioning process. This includes verifying the work environment, conducting electrical installation checks, performing internal and external equipment inspections, powering on the system, and executing operational tests to ensure compatibility and reliability.

What environmental ratings do Tork products have?

Tork products are designed to meet various environmental ratings, including NEMA Type 4X and Type 6, which provide protection against corrosion, windblown dust, rain, and occasional temporary submersion. These ratings ensure that Tork products can withstand harsh industrial environments while maintaining operational integrity.

What communication protocols do Tork products support?

Tork products support a comprehensive range of communication protocols, including PROFIBUS DP V1, PROFINET with dual port, EtherNet/IP with dual port, CANopen, and Modbus RTU integrated as standard. These protocols facilitate flexible network integration and high-performance communication across various industrial automation systems.

What are the key features of Tork products?

Tork products are designed with advanced features that enhance efficiency and reliability in industrial applications. Key features include integrated harmonics and EMC design for improved power quality, removable terminals for quick installation, and USB ports for easy troubleshooting. Additionally, Tork solutions emphasize user-friendly setup with application wizards and memory modules for convenient parameter management.

What are the main product lines offered by Tork?

Tork offers a diverse range of products primarily focused on industrial automation, including TORK® Photocontrols, lighting controls, and various electrical components such as enclosures, occupancy sensors, and grounding solutions. These products are designed to enhance efficiency and reliability in commercial and industrial applications.

What technical support does Tork offer?

Tork offers a comprehensive range of technical support services, including 24/7 customer support, on-site service management, and a technical hotline network. With three advanced technical support centers and over 8,000 hours of technical training conducted annually, Tork ensures certified expertise across 25+ languages to assist customers effectively. Their commitment to service is reflected in a 98% Service Level Agreement compliance rate, providing reliable support for all operational needs.

What industries and applications are Tork products used for?

Tork products are utilized across a variety of industries, including food processing, healthcare, hospitality, and manufacturing. They are designed for applications such as hand hygiene, surface cleaning, and dispensing solutions, ensuring efficiency and compliance in environments that require high standards of cleanliness and safety.

What certifications and standards do Tork products comply with?

Tork products comply with UL and cUL certifications, ensuring they meet rigorous safety and performance standards. Additionally, many models are designed to meet NEMA enclosure ratings, providing protection against environmental factors.

How are Remke products typically installed?

Remke products are typically installed through a systematic process that includes site audits to verify proper wiring, followed by remote or on-site commissioning. This commissioning involves installation verification, programming, and communication testing to ensure the system operates reliably and meets design specifications.

What accessories are available for Remke products?

Remke offers a wide range of accessories for their products, including panel mounting kits, fuse holders for voltage inputs, ferrites for communication modules, and current transformers. These accessories enhance the functionality and protection of Remke's industrial automation solutions, ensuring reliable performance in various applications.