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NSI Industries L25048 - 1 Hole Long Barrel Copper Compression Lug 250 MCM - 1/2" Bolt Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. They are tin-plated to provide corrosion low contact resistance. Marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed and to cable manufacturer instructions. Temperature rating 90 degrees C. .
NSI Industries

L25048

UPC: 662381034137

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Overview

NSI Industries L25048 1 Hole Long Barrel Copper Compression Lug is a UL486A and UL467 listed connector engineered for high-conductivity copper cable terminations in industrial and commercial electrical systems. Manufactured from high-purity copper tubing with a tin-plated finish, this lug ensures low contact resistance and superior corrosion resistance, making it ideal for grounding and bonding applications up to 35KV when installed per cable manufacturer instructions. Key specifications include a 90°C temperature rating, 600V maximum voltage, and compatibility with 250 MCM copper conductors. The long barrel design accommodates deep cable insertion, while the color-coded yellow finish and die-index marking simplify identification and tool selection. The 1/2" bolt size ensures secure mechanical fastening, and the lug is optimized for use with NSI N12ID dieless compression tools for expanded wire range performance. This compression lug is listed for Class B or C building wire copper cable only and supports applications where voltage stress relief is critical, particularly for systems exceeding 2000V. The L25048 is part of NSI Industries' L Series, a trusted line of compression connectors designed for reliability in high-ampacity circuits. With a UL467 grounding and bonding certification for sizes 8 AWG to 3/0 AWG, this lug meets NEC 310.15 ampacity requirements when paired with appropriate insulation types and conductor materials. For installations requiring visual verification of cable insertion, NSI offers "P" variants with a peep hole for inspection. Choose the L25048 for dependable, code-compliant terminations in power distribution, substations, renewable energy systems, and industrial machinery where performance and safety are non-negotiable.
  • Produced from high conductivity copper tubing
  • Tin-plated to provide corrosion low contact resistance
  • Marked with die index and color coded-Yellow
  • Listed for 35KV max when properly installed and to cable manufacturer instructions
  • For applications greater than 2000V, consult the cable Manufacturer voltage stress relief instructions

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 Hole
Number Of Holes
1
Size
L=3.03 - W=1.09 - OD=.752 - ID=.594
Size
250 MCM - 1/2" Bolt
Special Features
250 MCM (STR) - 1/2 Mounting Hole
Standard
UL486A/B
Stud Size
1/2 IN
Type
Long Barrel - One Hole
Voltage Rating
600 V
Voltage Rating
35 kV
Warranty
1 Year
Package Dimensions (L x W x H)
3.031 IN x 1.091 IN x 0.752 IN
Package Dimensions (L x W x H)
7.6987 cm x 2.7711 cm x 19.1008 mm
Package Weight (Imperial)
4.250 L
Package Weight (Metric)
1.928 kg
2 Hole Long Barrel Copper Stacked Compression Lug 250 MCM - 1/2" Bolt Long Barrel Copper Stacked Compression Lugs is a type of copper compression connector that is produced from high conductivity copper tubing. They are designed for use with the L-N series. They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference.

SL250N

2 Hole Long Barrel Copper Stacked Compression Lug 250 MCM - 1/2" Bolt Long Barrel Copper Stacked Compression Lugs is a type of copper compression connector that is produced from high conductivity copper tubing. They are designed for use with the L-N series. They are tin-plated to provide corrosion resistance and are marked with die index and color coded for easy reference.
Long Barrel Two-Way Copper Connector, Cable Size 250 kcmil, Navy 250 (61), Length 3-3/8 Inches, Diameter 49/64 Inch, Die Color Yellow, Die Code 62, Tin Plated

271-30630-27

Long Barrel Two-Way Copper Connector, Cable Size 250 kcmil, Navy 250 (61), Length 3-3/8 Inches, Diameter 49/64 Inch, Die Color Yellow, Die Code 62, Tin Plated
Copper butt splice, long barrel, 400 kcmil cable.

SCL400-6

Copper butt splice, long barrel, 400 kcmil cable.
Offset Pin Terminal 2/0 AWG All-aluminum Pin Terminals is designed for termination of both aluminum and copper conductors. The pin is offset for use in tight spaces and for ease of installation in side-by-side terminations. The solid pin is made of aluminum and is tin-plated and pre-filled with oxide inhibitor. A cover is provided for quick installation. Rated 600 Volts.

PTO-2/0

Offset Pin Terminal 2/0 AWG All-aluminum Pin Terminals is designed for termination of both aluminum and copper conductors. The pin is offset for use in tight spaces and for ease of installation in side-by-side terminations. The solid pin is made of aluminum and is tin-plated and pre-filled with oxide inhibitor. A cover is provided for quick installation. Rated 600 Volts.
Solid Pin Terminal for Copper and Aluminum Conductors 3/0 AWG All-aluminum Pin Terminals is designed for termination of both aluminum and copper conductors. The solid pin is made of aluminum and is tin-plated and pre-filled with oxide inhibitor. A cover is provided for quick installation. Rated 600 Volts.

PTS3/0

Solid Pin Terminal for Copper and Aluminum Conductors 3/0 AWG All-aluminum Pin Terminals is designed for termination of both aluminum and copper conductors. The solid pin is made of aluminum and is tin-plated and pre-filled with oxide inhibitor. A cover is provided for quick installation. Rated 600 Volts.
Offset Pin Terminal 4/0 AWG All-aluminum Pin Terminals is designed for termination of both aluminum and copper conductors. The pin is offset for use in tight spaces and for ease of installation in side-by-side terminations. The solid pin is made of aluminum and is tin-plated and pre-filled with oxide inhibitor. A cover is provided for quick installation. Rated 600 Volts.

PTO-4/0

Offset Pin Terminal 4/0 AWG All-aluminum Pin Terminals is designed for termination of both aluminum and copper conductors. The pin is offset for use in tight spaces and for ease of installation in side-by-side terminations. The solid pin is made of aluminum and is tin-plated and pre-filled with oxide inhibitor. A cover is provided for quick installation. Rated 600 Volts.
1 Hole Long Barrel Copper Compression Lug 400 MCM - 1/2" Bolt Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. They are tin-plated to provide corrosion low contact resistance. Marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed and to cable manufacturer instructions. Temperature rating 90 degrees C. .

L40048

1 Hole Long Barrel Copper Compression Lug 400 MCM - 1/2" Bolt Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. They are tin-plated to provide corrosion low contact resistance. Marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed and to cable manufacturer instructions. Temperature rating 90 degrees C. .
Offset Pin Terminal 250 MCM All-aluminum Pin Terminals is designed for termination of both aluminum and copper conductors. The pin is offset for use in tight spaces and for ease of installation in side-by-side terminations. The solid pin is made of aluminum and is tin-plated and pre-filled with oxide inhibitor. A cover is provided for quick installation. Rated 600 Volts.

PTO-250

Offset Pin Terminal 250 MCM All-aluminum Pin Terminals is designed for termination of both aluminum and copper conductors. The pin is offset for use in tight spaces and for ease of installation in side-by-side terminations. The solid pin is made of aluminum and is tin-plated and pre-filled with oxide inhibitor. A cover is provided for quick installation. Rated 600 Volts.

Frequently Asked Questions about NSI Industries

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