Heavy Duty Copper Lay-In Lugs – Copper Solar Lugs, Copper Ground Lugs

High-Conductivity Electrical Copper Lugs and Lay in Connectors

Our industry-standard Copper Lay-In Lugs, Copper Ground Lugs and Copper Solar Lugs are engineered for superior performance, reliability, and ease of installation in demanding electrical applications. Designed for use in electrical panels, switchgear, metering equipment, and load centers, these lugs provide a secure and highly conductive termination point for copper conductors.

Crafted from high-purity, electrolytic Copper, these lugs ensure maximum current carrying capacity and minimal voltage drop, supporting efficient power distribution. The lay-in design features an open-ended barrel, allowing for quick and easy wire insertion without the need to thread the conductor, drastically reducing installation time. We use Stainless Steel Screws for Direct Burial Copper lugs.

Product Overview & Features

Our Copper Lay-In Lugs are the preferred choice for electricians, panel builders, and electrical engineers who require a robust and dependable connection solution.

Key Features & Benefits:

• High-Conductivity Copper Construction: Manufactured from 99.9% pure copper, ensuring excellent electrical conductivity and thermal performance, exceeding industry standards.

• Time-Saving Lay-In Design: The open-sided barrel allows conductors to be “laid in” after the lug is mounted, simplifying wiring in crowded panels and enclosures.

• Tin Plating: The entire lug is finished with a corrosion-resistant tin plating. This provides superior protection against oxidation, ensures long-term reliability, and maintains a stable, low-resistance connection.

• Heavy-Duty Mounting Strap: A robust integrated strap provides a secure mechanical mounting point to the busbar or terminal block, accommodating a variety of hardware.

• Precision Engineered Barrel: The barrel is precision-bored to accommodate a specific wire range and features serrated grooves (knurling) to enhance grip and prevent conductor slippage under torque.

• One or Two-Hole Lug Design: Features two set screws for a balanced, high-pressure connection that distributes force evenly across the conductor, minimizing strand damage and preventing hot spots.

• UL compliant : Our lugs are tested  to meet or exceed UL needs

Applications of Copper Ground Lugs and Copper Lay in Lugs

Copper Lay-In Lugs are versatile components used across numerous electrical applications:

• Industrial Control Panels (ICPs) and PLC panels

• Power Distribution Switchgear and Motor Control Centers (MCCs)

• Circuit Breaker Panels and Load Centers

• Transformer Connections and Metering Equipment

• Grounding Applications and Service Entrance Connections

• Commercial and Industrial Wiring where reliable, high-amperage connections are critical.

Technical Specifications & Ordering Information

Available Sizes & Part Numbers

Note: For custom configurations or larger sizes, please contact our sales engineering team.

Why Choose Our Copper Lay-In Lugs?

• Proven Reliability: Built to withstand thermal cycling and vibration, ensuring a permanent, safe connection.

• Enhanced Safety: The secure two-hole set screw design and full tin plating reduce the risk of connection failure, overheating, and arc flash hazards.

• Engineered for Efficiency: The lay-in feature streamlines the installation process, saving labor costs on large projects.

• Full Traceability: Every batch is manufactured under strict quality control guidelines, providing confidence and traceability for critical projects.

Downloads -email us for

• Product Datasheet & Specifications (PDF)

• Installation Guide & Torque Specifications

• CAD Drawings & 3D Models

Frequently Asked Questions (FAQ)

Q: Can these lugs be used for aluminum wire?
A: No. These are specifically designed and rated for copper conductors only. Using them with aluminum wire can lead to connection failure due to galvanic corrosion and different expansion properties.

Q: What is the torque specification for the set screws?
A: Torque values are specific to the lug size and are marked on the product label. Always use a calibrated torque wrench or screwdriver and follow the values in the provided datasheet to ensure a proper connection.

Q: Are these lugs suitable for outdoor use?
A: The tin plating provides good corrosion resistance for indoor and protected outdoor environments. For harsh, exposed outdoor applications, additional environmental protection (e.g., enclosures, antioxidant compound) may be recommended.

Q: What is the difference between a lay-in lug and a standard mechanical lug?
A: A standard lug requires the wire to be inserted through the barrel before the lug is mounted. A lay-in lug can be mounted first, and the wire is inserted into the open side, making it ideal for retrofitting or tight spaces.

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Contact us at sales@brass-copper-parts.com for more details.