Product Description
The Blackburn ADR21 (by ABB / Thomas & Betts) is a high-quality, single-conductor mechanical terminal lug designed for versatility and ease of use. Engineered for both copper and aluminum conductors, this dual-rated connector is a staple in industrial and commercial electrical systems for terminating power cables in panelboards, switchgear, and motor controls.
With its simple slotted-screw design, it allows for a secure, high-pressure connection without the need for specialized crimping tools—making it an ideal choice for both new installations and rapid field repairs.
? Technical Specifications
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Manufacturer: ABB / Thomas & Betts
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Brand: Blackburn
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Part Number: ADR21
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Conductor Range: 14 AWG (Min) to 2/0 AWG (Max)
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Conductor Type: Stranded Copper or Aluminum (Dual Rated)
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Material: High-strength tin-plated aluminum alloy
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Mounting: Single-barrel, one-hole mount
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Bolt Hole Size: 1/4 inch (0.25")
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Voltage Rating: 600 VAC
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Screw Type: Slotted head for easy installation
⭐ Key Features & Benefits
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Dual-Rated (AL9CU): Fully certified for use with both copper and aluminum wiring, providing flexibility across various electrical projects and preventing thermal expansion issues.
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Corrosion Protection: Electro-tin plating ensures low contact resistance and long-term durability by preventing oxidation in humid or industrial environments.
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No Special Tools Required: The mechanical slotted-screw design allows for secure termination using standard hand tools rather than expensive hydraulic crimpers.
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Compact Footprint: The single-conductor, one-hole design is perfect for tight enclosures and standard busbar configurations where space is a premium.
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Reliable Conductivity: Manufactured from high-strength aluminum alloy to maintain electrical integrity and mechanical hold under high-load conditions.
⚙️ Applications
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Power Distribution: Used in circuit breaker terminations and panelboard wiring.
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Industrial Controls: Ideal for connecting motor leads and control power transformers.
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Grounding & Bonding: Suitable for a variety of electrical equipment grounding and bonding applications.
