Powering Connections: ABB Grounding Systems, Lugs, Dies & Crimp Tools

Grounding is one of the most critical parts of any electrical installation. A proper grounding system protects both people and equipment by providing a safe path for fault current to flow back to the ground. ABB’s grounding products are designed for long-term reliability, corrosion resistance, and mechanical strength—ensuring a solid electrical connection even in the harshest environments.

A dependable grounding system helps:

• Protect equipment from electrical surges, lightning, and fault currents.
• Ensure safety by preventing shock hazards.
• Maintain system performance and compliance with electrical codes.

Whether you’re working in a commercial building, industrial facility, or utility application, grounding is the foundation of electrical safety.

Grounding is the foundation of electrical safety. It ensures fault current has a clear, low-resistance path to earth—protecting both people and equipment. When it comes to building a dependable and code-compliant grounding network, ABB Blackburn® Grounding Systems set the industry standard for reliability and performance.

Blackburn’s grounding line includes compression, mechanical, and exothermic connectors and accessories, creating one of the most complete grounding systems available for industrial, commercial, and utility applications.

Blackburn Grounding Systems offer a full suite of components to help you design and maintain safe, long-lasting installations:

• Cast Copper Connectors for Grounding – Durable and corrosion-resistant for long-term performance.
• Exothermic Welding Systems – Provide molecular copper-to-copper or copper-to-steel bonds with the lowest electrical resistance possible.
• EZGround® Grounding Connectors – Simplify installation without sacrificing reliability.
• Ground Rods, Plates, and Clamps – Create solid, direct-burial grounding points that meet IEEE, UL, and CSA standards.
• Flexible Braid & Bonding Jumpers – Ensure conductivity across joints and movable parts.

 Blackburn® cast, forged, or formed mechanical connectors—available in economical copper or dual-rated aluminum—offer unmatched versatility for electrical connections. Each product meets U.L. and C.S.A. certification standards, ensuring safe, reliable performance across a wide range of applications.

Key Features

• Broad Range, No Special Tools: Blackburn mechanical connectors cover a wide variety of electrical connection needs and can be installed without special tools. Many are also reusable.
• Rugged Split Bolts: Engineered for strength and durability, Blackburn split bolts are among the toughest in the industry, available in both copper and aluminum.
• Labor-Saving Options: Pre-insulated Blackburn Multi-Tap connectors simplify wire management and reduce installation time

Product Line

Anti-Rotational Connectors | Clamp Connectors | Copper Mechanical Connectors | Dual-Rated Mechanical Connectors | Insulated Multi-Taps | Insulation Piercing Conductor Connectors | Parallel Groove Connectors | Power Distribution Blocks | Service Post Connectors | Split Bolt Connector

The Color-Keyed® system provides one of the most reliable and high-performance electrical connections available. Designed to meet the most stringent UL and IEC Class A testing requirements, Color-Keyed® lugs are manufactured from 99.9% pure, oxygen-free copper for maximum conductivity and durability.

The Color-Keyed® color-coded crimping system ensures that the correct die is always used with the matching lug, resulting in an accurate and consistent crimp. Unlike simple indent crimps, Color-Keyed® dies produce a circumferential, hex, or diamond-shaped compression. This creates a large, high-pressure contact area between the cable and connector—delivering superior conductivity, lower resistance, and higher pull-out strength. The design exceeds IEC 61238-1 and UL standards for performance and safety.

IEC Metric Options

• Straight (1-hole / 2-hole): Wire sizes from 10mm² to 400mm² with metric bolt holes from M5 to M24
• 45°: Wire sizes from 10mm² to 240mm² with metric bolt holes from M6 to M16
• 90°: Wire sizes from 10mm² to 240mm² with metric bolt holes from M6 to M16

UL AWG Technical Info

• Copper tin-plated lugs rated up to 35kV (#8 Str. to 1000 kcmil)
• Compatible with stranded, flexible, welding, and portable cable
• Inspection hole for easy installation
• Chamfered barrel for smooth cable entry
• Seamless, high-conductivity copper construction

The color coding of lugs is a standardized system used to quickly identify the correct die and tool for crimping a lug onto a cable. ABB’s Color-Keyed® Compression Lug System uses this method to ensure safe, reliable, and verifiable electrical connections.

Purpose of Color Coding

• Matches the lug, die, and wire size.
• Ensures proper crimping pressure and electrical conductivity.
• Helps inspectors verify correct installation by checking the embossed die code.

Before choosing a die, ensure you have the correct lug for your conductor:

Identify the Cable Size

• Determine the wire size (AWG or kcmil).
• Lugs are typically stamped with the compatible cable size.

Verify Conductor Material Compatibility

• Copper Only: Lugs marked with just the cable size or “CU” are for copper conductors.
• Aluminum Only: Lugs marked “AL9” are for aluminum conductors (the “9” indicates a 90°C rating).
• Dual Use: Lugs marked “AL9CU” are suitable for both copper and aluminum conductors.

Select the Correct Color-Keyed® Connector

• Choose a lug with the appropriate color code for the cable size.
• This color code will guide die selection in the next step.

Once the lug is selected, match it with the correct die and tool:

Select the Die and Tool Combination

• Use ABB’s crimping tool compatible with the lug and wire size.
• Choose the die designed for that tool and lug.

Match by Color Code

• Lugs feature colored bands or dots that correspond to die colors.
• Example: A lug with an orange band (e.g., for 3/0 AWG) requires an orange-coded die.

Match by Die Code Number

• Both the lug and die are marked with a die code number.
• The die code is engraved on the crimp surface.
• Half-width dies are marked with an “H” after the code (e.g., 42H).

EB Horsman & Son provides expert support and access to ABB’s full range of grounding systems, lugs, dies, and crimping tools. Our specialists help you choose the right products, ensure compatibility, and deliver the materials you need quickly to keep your projects running smoothly.