NSI Industries L40N-38P - 2Hole Long Barrel Copper Compression Lug with Peep Hole 4/0 AWG -3/8" Bolt - 1" Mounting Hole Spacing 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.
NSI Industries

L40N-38P

UPC: 662381336033


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Overview

The NSI Industries L40N-38P is a 2-hole long barrel copper compression lug designed for high-conductivity electrical connections. Manufactured from high-conductivity copper tubing, this lug offers superior electrical performance and durability. It is tin-plated to ensure excellent corrosion resistance, making it suitable for demanding industrial applications. This lug is rated for a maximum of 35KV when properly installed, providing a reliable solution for high-voltage power distribution systems. The L40N-38P accommodates 4/0 AWG wire and utilizes a 3/8" bolt size. Its 2-hole configuration features 1" mounting hole spacing for secure termination. Each lug is clearly marked with die index information and color-coded for straightforward identification and inventory management. Ideal for use in power distribution, substations, and renewable energy infrastructure where robust and long-lasting connections are essential. Manufactured in the USA.
  • High-conductivity copper tubing construction
  • Tin-plated for superior corrosion resistance
  • Rated for 35KV maximum when properly installed
  • Accommodates 4/0 AWG wire and 3/8" bolt
  • 2-hole design with 1" mounting hole spacing

Specifications

Application
Terminate, Splice, Tap Power Connectors
Cable Size
4/0 AWG (STR)
Color
Purple
Connection Type
Compression
Environmental Conditions
90 C
Finish
Tin Plated
Material
Copper
Material
Tin-Plated Copper
Mounting
3/8 Mounting Holes IN
Mounting Type
2-hole, 1" Mounting Hole Spacing
Number Of Holes
2
Size
L=3.54 - W=1.00 - OD=.690 - ID=.550 IN
Size
4/0 AWG, 3/8" Bolt, 1" Hole Spacing
Special Features
4/0 AWG (STR) - 3/8 Mounting Holes - 1 Hole Spacing
Standard
UL486A/B
Stud Size
3/8 IN
Type
Long Barrel - Two Hole With Peep Hole
Voltage Rating
35 kV
Voltage Rating
600 V
Warranty
1 Year
Package Dimensions (L x W x H)
3.54 IN x 1 IN x 0.69 IN
Package Dimensions (L x W x H)
8.9916 cm x 25.4 mm x 17.526 mm
Package Weight (Imperial)
5.500 L
Package Weight (Metric)
2.495 kg
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U-Type Compression Die - Black 2/0 AWG Copper U-Shaped Compression Dies are for use with the NSi-12 Compression Tool and Other Tools. See Cross-Reference Chart below.

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Power Distribution Block (1) 2/0-14 AWG Primary (6) 4-14 AWG Secondary Power Distribution Blocks are made of high strength, high-conductivity aluminum alloy and are mounted in a high-strength glass-filled polyester base. Each block can stand alone or combine with other blocks to form a multi-block set.

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Combine high performance with compact dimensions: - 1000 V AC / DC IEC 600 V UL, - Opt for the best marking visibility thanks to the up-front, flat marker zone, which lets you mark up to eight digits or increase the font size.

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Combine high performance with compact dimensions: - 1000 V AC / DC IEC 600 V UL, - Opt for the best marking visibility thanks to the up-front, flat marker zone, which lets you mark up to eight digits or increase the font size.

How to Install and Crimp NSI Copper Compression Connectors

Install NSI copper compression lugs or splices by preparing the conductor, selecting the correct connector size, and crimping with the approved tool and die set. Follow the strip-length and crimp-location guidance to ensure a secure electrical connection.

Tools needed:

Wire stripper, Wire brush, Approved crimp tool (NSI N12ID or NSI N1240), Approved mechanical crimp tool if applicable (NSI M-250 or NSI M-500)

Supplies needed:

Correctly sized NSI copper compression lug or splice connector, Copper conductor cable, Approved dies for the selected crimp tool

  1. Select the correct connector

    Choose a lug or splice connector that matches the cable size and conductor type. Verify that the connector series and barrel style are appropriate for the installation before starting.

  2. Strip the conductor to the proper length

    Carefully strip the insulation from the conductor without nicking the strands. Strip only enough so the conductor can be completely inserted into the connector barrel and fill it fully.

  3. Clean the conductor strands

    Wire brush the stripped portion of the conductor to remove oxide films and contamination. Ensure the stripped conductor is clean before insertion.

  4. Insert the conductor fully

    Insert the stripped conductor completely into the connector barrel so the conductor is fully seated. Do not crimp until the conductor is fully inserted and aligned.

  5. Crimp the connector with approved tools

    Use an approved crimp tool and the correct die set for the connector size. Follow the barrel markings for suggested crimp locations, and make the required number of crimps; long-barrel lugs and splices require twice as many crimps as indicated. Use only approved tools and dies for the selected connector.

  6. Verify the finished connection

    Inspect the crimped connector to confirm the conductor is secure and the crimp locations are correct. Make sure the installation is clean and mechanically sound before placing the connection into service.

Frequently Asked Questions about NSI Industries

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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.

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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.

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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.

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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.

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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.

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