Aluminum Long Barrel Compression Splices

Aluminum Long Barrel Compression Splices are engineered for secure, high-conductivity inline wire connections in residential, commercial, industrial, and utility electrical applications.

Manufactured from high-conductivity seamless aluminum, these long barrel compression splices provide extended conductor engagement on both ends of the connector. The long barrel design allows for multiple compression points per side, improving pull-out strength, reducing electrical resistance, and ensuring consistent current flow across the splice.

Dual Rated AL9CU Performance
These aluminum compression splices are AL9CU dual rated, making them suitable for terminating aluminum-to-aluminum, copper-to-copper, or aluminum-to-copper conductor combinations. This versatility makes them ideal for upgrades, repairs, and mixed-conductor electrical systems commonly found in commercial buildings, industrial facilities, and utility infrastructure.

Each connector barrel is factory coated with oxide inhibitor and capped to protect the interior prior to installation. The inhibitor helps prevent oxidation on aluminum conductors, improving conductivity and reducing the risk of overheating or connection failure over time.

Center Stop for Proper Installation
A built-in center stop ensures proper cable insertion depth on both sides of the splice. This feature helps installers achieve correct conductor positioning, balanced compression, and consistent electrical performance, reducing installation errors and rework in the field.

Key Features and Construction
• AL9CU dual rated for aluminum and copper conductors
• Long barrel design for multiple compression points on each conductor
• High-conductivity seamless aluminum construction
• Factory-applied oxide inhibitor inside each barrel
• Barrel caps to protect connector interiors before installation
• Integrated center stop for proper conductor alignment
• Uniform electro-tin plating for corrosion resistance and reduced contact resistance
• Color coded for easy wire size identification
• Clearly marked with wire size and die index

Applications
Aluminum Long Barrel Compression Splices are commonly used for inline splicing of conductors in power distribution systems, grounding and bonding applications, service entrance conductors, feeders, transformers, switchgear, generators, and renewable energy systems. They are well suited for both indoor and outdoor installations, including electrical rooms, mechanical rooms, industrial environments, and utility enclosures.

These splices are ideal for new construction, system expansions, maintenance work, and electrical repairs where a strong, code-compliant inline connection is required.

Sizes and Compatibility
This collection includes a wide range of wire sizes to accommodate both small and large conductors. Each splice is designed for use with standard compression tools when installed using the specified die index, helping ensure consistent, repeatable, and professional-grade results.

Related Collections
To complete your compression connector selection, explore these related collections:

👉Aluminum Long Barrel 1 Hole Compression Lugs
👉Aluminum Long Barrel 2 Hole Compression Lugs
👉Copper Compression Splices
👉Compression Connectors and Terminals

Why Choose Aluminum Long Barrel Compression Splices
Designed for professional electricians, contractors, and utility installers, Aluminum Long Barrel Compression Splices deliver high conductivity, mechanical strength, and long service life. Their long barrel design, oxide-inhibited interior, and corrosion-resistant finish make them a reliable solution for critical inline electrical connections where performance and durability matter most.