NSI Industries L350N - 2Hole Long Barrel Copper Compression Lug350 MCM-1/2" 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.
NSI Industries

L350N

UPC: 662381035158


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Overview

The NSI Industries L350N is a high-conductivity copper compression lug designed for robust electrical connections. Manufactured from premium copper tubing, this lug ensures excellent conductivity and low contact resistance. Its tin plating provides superior corrosion resistance, extending the lifespan of your electrical infrastructure. The L350N features a long barrel design for secure conductor termination and is marked with a clear die index and color coding for easy identification and installation. This lug is rated for 35KV maximum when properly installed according to cable manufacturer instructions, making it suitable for high-voltage applications. It is UL486A Listed as a wire connector and UL467 Listed for grounding and bonding applications. The operating temperature rating is 90°C, and it is rated for 600V. For applications exceeding 2000V, consult the cable manufacturer for specific voltage stress relief instructions. The L350N is designed for use with 350 MCM conductors and features a 1/2" bolt size for secure mounting. This product is proudly manufactured in the USA. Key specifications include a barrel ID of 0.701", barrel OD of 0.874", length (L) of 3.465", width (W) of 0.520", and a tang length (B) of 1.063". The mounting hole spacing (D) is 0.631", and the tang thickness (C) is 0.165". The mounting hole diameter (E) is 0.512". This lug is tin-plated for enhanced durability and performance. The NSI L350N is an essential component for reliable electrical terminations in demanding environments.
  • Constructed from high-conductivity copper tubing for optimal electrical performance.
  • Tin-plated for superior corrosion resistance and low contact resistance.
  • Long barrel design ensures secure and reliable conductor termination.
  • Marked with die index and color-coded for easy identification and installation.
  • UL486A Listed wire connector and UL467 Listed for grounding and bonding.

Specifications

Application
Terminate, Splice, Tap Power Connectors
Cable Size
350 MCM (STR)
Color
Red
Connection Type
Compression
Current Rating
350 A
Environmental Conditions
90 C
Finish
Tin Plated
Material
Copper
Mounting
1/2 Mounting Holes
Number Of Holes
2
Poles
2
Series
L350N
Size
L=5.39 - W=1.28 - OD=.870 - ID=.700
Size
350 MCM
Special Features
350 MCM (STR) - 1/2 Mounting Holes - 1 3/4 Hole Spacing
Standard
UL486A/B
Stud Size
1/2 IN
Type
Long Barrel - Two Hole
Voltage Rating
35 kV
Voltage Rating
600 V
Warranty
1 Year
Package Dimensions (L x W x H)
5.39 IN x 1.28 IN x 0.87 IN
Package Dimensions (L x W x H)
13.6906 cm x 3.2512 cm x 22.098 mm
Package Weight (Imperial)
4.800 L
Package Weight (Metric)
2.177 kg
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How to Install the L350N Compression Connectors

This guide provides step-by-step instructions for installing L350N compression connectors, ensuring secure and reliable electrical connections.

Estimated time: 30m

Tools needed:

Wire strippers, Crimping tool, Multimeter

Supplies needed:

Copper compression connectors, Wire brush, Insulation tape

  1. Prepare the conductor

    Carefully strip the insulation from the conductor to a length that allows it to be fully inserted into the connector barrel without nicking the strands.

  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 completely.

  4. Crimp the connector

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

  5. Verify the connection

    Use a multimeter to check the continuity of the connection, ensuring that there are no breaks or faults in the electrical path.

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