NSI Industries L250N - 2Hole Long Barrel Copper Compression Lug250 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

L250N

UPC: 662381035134

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Overview

NSI Industries L250N 250 MCM Long Barrel Copper Compression Lug is a high-conductivity copper connector engineered for heavy-duty electrical terminations in industrial and commercial applications. Manufactured from premium copper tubing with a tin-plated finish, this compression lug delivers superior corrosion resistance and low contact resistance, ensuring reliable electrical performance over time. The L250N is UL486A and UL467 listed for grounding and bonding applications, supporting wire ranges from 250 MCM to 500 MCM with a maximum voltage rating of 600V and 35KV when installed per manufacturer instructions. The long barrel design provides enhanced mechanical strength and strain relief, making it ideal for high-stress environments such as power distribution, motor control centers, and renewable energy systems. The connector features a 1/2" bolt hole for secure mounting and is color-coded for easy identification during installation. Part numbers ending in 'P' include a sight inspection hole for verifying cable insertion depth. Temperature-rated to 90°C, the L250N meets NEC 310.15 ampacity requirements for Class B or C building wire copper cable. NSI Industries, a US-based manufacturer, ensures consistent quality and compliance with industry standards.
  • UL486A and UL467 listed for grounding and bonding applications
  • Tin-plated copper construction for corrosion resistance and low contact resistance
  • Supports 250 MCM to 500 MCM wire range with 1/2" bolt hole
  • Temperature rated to 90°C and voltage rated to 600V (35KV max with proper installation)
  • Color-coded and die-indexed for easy identification and installation

Specifications

Application
Terminate, Splice, Tap Power Connectors
Cable Size
250 MCM (STR)
Color
Yellow
Connection Type
Compression
Environmental Conditions
90 C
Finish
Tin Plated
Material
Copper
Mounting
1/2 Mounting Holes
Number Of Holes
1
Size
L=4.96 - W=1.09 - OD=.750 - ID=.590
Size
250 MCM - 1/2" Bolt
Special Features
250 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
600 V
Voltage Rating
35 kV
Warranty
1 Year
Package Dimensions (L x W x H)
4.96 IN x 1.09 IN x 0.75 IN
Package Dimensions (L x W x H)
12.5984 cm x 2.7686 cm x 19.05 mm
Package Weight (Imperial)
6.750 L
Package Weight (Metric)
3.062 kg
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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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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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