Product Description
The Blackburn ADR11-21 is a high-efficiency, dual-barrel mechanical terminal lug designed to consolidate two separate conductors into a single mounting point. Manufactured by Blackburn (ABB), this lug is the industry standard for space-saving power distribution and grounding. Its dual-port design allows for clean, organized wiring in industrial control panels, motor centers, and electrical enclosures without the need for multiple mounting holes.
Precision-machined from high-strength aluminum alloy and finished with premium electro-tin plating, the ADR11-21 ensures maximum conductivity while preventing oxidation. Its AL9CU dual-rating makes it fully compatible with both aluminum and copper conductors, providing the versatility required for modern electrical infrastructure.
Technical Specifications
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Manufacturer: Blackburn (ABB)
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Part Number: ADR11-21
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Conductor Range: 14 AWG up to 1/0 AWG (Stranded)
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Configuration: 2-Barrel (2-Conductor) / Single-Hole Mount
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Material: High-Strength Tin-Plated Aluminum Alloy
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Rating: Dual-Rated AL9CU (CU9AL)
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Temperature Rating: 90°C (194°F)
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Voltage Rating: 600V (Standard)
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Mounting Hole Size: 1/4-inch Stud
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Termination Type: Slotted Set Screw (Solderless)
Physical Dimensions
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Overall Length: 1-15/32 inches
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Width: 1-7/32 inches
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Height: 25/32 inches
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Tongue Length: ~27/32 inches
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Tongue Design: Straight Fixed Tongue
Key Features & Benefits
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Dual-Conductor Efficiency: The 2-barrel design allows you to land two feeders (up to 1/0 AWG) on a single 1/4" stud, reducing the footprint needed on busbars and backplates.
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Universal AL9CU Compatibility: Certified for use with both copper and aluminum stranded wires, simplifying job-site inventory and preventing galvanic corrosion.
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Corrosion Protection: Durable electro-tin plating provides a protective barrier against atmospheric oxidation, essential for long-term reliability.
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Easy Installation: Features slotted set screws that allow for secure termination using standard hand tools—no hydraulic crimping tools or specialized dies required.
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Industrial Durability: Constructed from high-strength aluminum to withstand high-clamping pressures without cracking or mechanical failure.
