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NSI Industries GL500N - 2 Hole Short Barrel Copper Compression Lug w/ Peep Hole 500 MCM - 1/2" Bolt Short Barrel Copper Compression Lugs with Peep Hole 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 GL500N 2 Hole Short Barrel Copper Compression Lug w/ Peep Hole 500 MCM - 1/2" Bolt Short Barrel…

UPC: 662381036575


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Technical BulletinInstallation Instructions

Contact for Pricing

Minimum Qty: 6

Multiplier: 6

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The NSI Industries GL500N is a high-conductivity, two-hole short barrel copper compression lug engineered for secure electrical terminations in demanding industrial applications. Manufactured from premium copper tubing and tin-plated for superior corrosion resistance, this lug ensures low contact resistance and long-term reliability. The GL500N is specifically designed for 500 MCM copper conductors and features a 1/2" bolt size for robust fastening. Its two-hole mounting design provides enhanced stability, while the integrated peep hole allows for quick visual verification of complete cable insertion during installation. The connector end includes a gentle, continuous flare that simplifies cable insertion for flexible and extra-flexible copper cables—ideal for applications in diesel locomotives, welding equipment, and mining machinery where cable movement is common. This lug is UL486A Listed and cULus Listed, with a temperature rating of 90°C and a maximum voltage of 600V. The barrel length measures 1.54 inches, with a mounting hole spacing of 1.75 inches. Each standard carton includes 3 units. For applications exceeding 2000V, follow the cable manufacturer's voltage stress relief instructions during installation. The GL500N is color-coded (green) and marked with die index for easy identification and application matching.
  • Two-hole design for secure mounting and enhanced stability
  • Peep hole enables visual verification of complete cable insertion
  • Gentle, continuous flare for easy insertion of flexible/extra-flexible copper cables
  • Tin-plated copper construction for corrosion resistance and low contact resistance
  • UL486A Listed and cULus Listed with 90°C temperature rating and 600V maximum voltage

Specifications

Application
Terminate, Splice, Tap Power Connectors
Cable Size
500 MCM (STR)
Color
Brown
Environmental Conditions
90 C
Finish
Tin Plated
Material
Copper
Mounting
1/2 Mounting Holes
Number Of Holes
2
Size
L=4.88 - W=1.54 - OD=1.06 - ID=.840
Special Features
500 MCM (STR) - 1/2 Mountiong Holes - 1 3/4 Hole Spacing
Standard
UL486A/B
Stud Size
1/2 IN
Type
Short Barrel - Two Hole
Voltage Rating
600 V
Warranty
1 Year
Package Dimensions (L x W x H)
4.882 IN x 1.539 IN x 1.063 IN
Package Dimensions (L x W x H)
12.4003 cm x 3.9091 cm x 2.7 cm
Package Weight (Imperial)
4.080 L
Package Weight (Metric)
1.851 kg
Die for 12 Ton 13400 or 13642M Hydrualic Tool for Crimping 204210MT Dragon Tooth Terminals, Brown. .301/.289 Gaging

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HYD POWER TOOL FOR CRIMPING RD-RM

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Ratchet Drive Crimping Tool APPLICATIONS: Ratchet Drive Crimping Tool is for non-insulated terminals from 6 to 1/0 AWG and insulated terminals from 22 to 8 AWG. Rugged, compact, and lightweight. Requires minimum effort due to ratchet action, ensuring an excellent crimp every time. FEATURES: TYPE: Insulated and Uninsulated ACTION: Ratchet INSULATED USE: Terminals 22 to 8 AWG NON-INSULATED USE: Terminals 6 to 1/0 AWG MANUFACTURER: NSi Industries PART NUMBER: RDC 1/0 UPC: 662381055309

RDC1/0

Ratchet Drive Crimping Tool APPLICATIONS: Ratchet Drive Crimping Tool is for non-insulated terminals from 6 to 1/0 AWG and insulated terminals from 22 to 8 AWG. Rugged, compact, and lightweight. Requires minimum effort due to ratchet action, ensuring an excellent crimp every time. FEATURES: TYPE: Insulated and Uninsulated ACTION: Ratchet INSULATED USE: Terminals 22 to 8 AWG NON-INSULATED USE: Terminals 6 to 1/0 AWG MANUFACTURER: NSi Industries PART NUMBER: RDC 1/0 UPC: 662381055309
U-Type Compression Die - Pink 1/0 AWG Copper - 2 AWG Aluminum 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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U-Type Compression Die - Pink 1/0 AWG Copper - 2 AWG Aluminum U-Shaped Compression Dies are for use with the NSi-12 Compression Tool and Other Tools. See Cross-Reference Chart below.
Non-Insulated Parallel Splice Connector For Wire Range #4 AWG, Circular Mil Range 33,100-52,600, Length 0.531 Diameter 0.41, Nickel Plated

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Non-Insulated Parallel Splice Connector For Wire Range #4 AWG, Circular Mil Range 33,100-52,600, Length 0.531 Diameter 0.41, Nickel Plated
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.

AS-K1-H6

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.
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.

1SNK705010R0000

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.
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.

1SNK705030R0000

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.
Molded Junction Box, Length 4 Inch x Width 4 Inch x Depth 2 Inch, Material Polycarbonate, Color Gray

E989NNJ-5-HD

Molded Junction Box, Length 4 Inch x Width 4 Inch x Depth 2 Inch, Material Polycarbonate, Color Gray
PVC Coated Junction Box, 12 Inch X 12 Inch X 6 Inch, 14 Gauge, Gray

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PVC Coated Junction Box, 12 Inch X 12 Inch X 6 Inch, 14 Gauge, Gray

Frequently Asked Questions

What is the mounting hole spacing for the GL500N?

The mounting hole spacing (D) for the GL500N is 1.75 inches.

What is the barrel length of the GL500N?

The barrel length (B1) of the GL500N is 1.54 inches.

How many units are included in a standard carton of GL500N?

Each standard carton of GL500N contains 3 units.

What is the maximum operating voltage for the GL500N?

The GL500N has a maximum voltage rating of 600V.

What is the temperature rating of the GL500N?

The GL500N has a temperature rating of 90°C.

What bolt size is required for the GL500N?

The GL500N requires a 1/2" bolt for secure fastening.

What copper cable sizes are compatible with the GL500N?

The GL500N is designed for 500 MCM copper conductors, with a wire range of 500 to 250 MCM.

What is the purpose of the peep hole in the GL500N?

The peep hole allows for easy visual inspection to ensure complete cable insertion during installation.

Is the GL500N suitable for flexible copper cables?

Yes, the GL500N features a gentle, continuous flare designed for easy insertion of flexible and extra-flexible copper cables.

What applications are suitable for the GL500N?

The GL500N is ideal for use in diesel locomotive, welding, and mining equipment due to its robust design and protection against cable strand damage.

How to Install Copper Compression Connectors

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

Estimated time: 30m

Tools needed:

Wire strippers, Crimping tool, Wire brush

Supplies needed:

Copper compression connectors, Insulated wire

  1. Strip the wire insulation

    Carefully strip the insulation from the conductor without nicking the strands, ensuring the stripped length allows for complete insertion into the connector barrel.

  2. 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.

  3. Insert the conductor into the connector

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

  4. Crimp the connector

    Use the appropriate crimping tool to securely crimp the connector onto the conductor, following the manufacturer's suggested crimp locations.

  5. Verify the connection

    Check the crimped connection for security and ensure there are no visible gaps between the connector and the conductor.

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