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NSI Industries AL750-58 - 1 HoleStandard BarrelAluminum Compression Lug750MCM -5/8 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

AL750-58

UPC: 662381030214


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Technical BulletinInstallation Instructions

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Overview

The NSI Industries AL750-58 is a high-conductivity aluminum compression lug engineered for reliable electrical connections in medium-voltage applications. Manufactured from premium aluminum tubing, this lug delivers excellent conductivity and durability for power distribution, industrial, and utility sectors. The standard barrel design features a 1-hole mounting configuration with a 5/8" bolt size, ensuring compatibility with a wide range of equipment and enclosures. The lug is electro-tin plated for enhanced corrosion resistance and low contact resistance, addressing a common issue in aluminum connectors. Each unit is clearly marked with its die index and color-coded (yellow) for quick identification, streamlining inventory management and installation processes. Rated for 35kV maximum when properly installed, the AL750-58 is suitable for medium-voltage applications. It is compatible with NSI crimp tools such as the N1240 and N121D, ensuring consistent and secure crimping. The lug is designed for 750 MCM wire range (750-500 MCM expanded) and features a barrel length of 6.1181 inches, width of 3.2008 inches, and a tang length of 2.1890 inches. The mounting hole diameter is 0.9370 inches, with a tang thickness of 0.5472 inches. For applications exceeding 2000V, consult cable manufacturer instructions for voltage stress relief. This connector is ideal for joining aluminum conductors in power distribution, industrial, and utility sectors where robust and long-lasting connections are paramount.
  • 750 MCM wire range (750-500 MCM expanded)
  • 1-hole mounting with 5/8" bolt size
  • Center stop for proper cable installation
  • Electro-tin plated for corrosion resistance
  • Color-coded (yellow) and die-index marked for easy identification

Specifications

Application
Terminate, Splice, Tap Power Connectors
Cable Size
750 MCM (STR)
Color
Yellow
Environmental Conditions
90 C
Finish
Tin Plated Bronze
Material
Aluminum
Mounting
5/8 Mounting Hole
Number Of Holes
1
Size
L=6.11 - W=2.18 - OD=1.59 - ID=1.03
Special Features
750 MCM (STR) - 5/8 Mounting Hole
Standard
UL486A/B
Stud Size
5/8 IN
Type
Standard Barrel - One Hole
Voltage Rating
600 V
Warranty
1 Year
Package Dimensions (L x W x H)
6.118 IN x 2.189 IN x 1.598 IN
Package Dimensions (L x W x H)
15.5397 cm x 5.5601 cm x 4.0589 cm
Package Weight (Imperial)
1.920 L
Package Weight (Metric)
0.871 kg
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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
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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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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.
PVC Coated Junction Box, 12 Inch X 12 Inch X 6 Inch, 14 Gauge, Gray

A1212SC-G

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

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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.

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.

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.

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