Blackburn ADR21 Aluminum Dual-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$54.61
$2.41
Blackburn ADR21 AL CONN 2/0-14 AWG

Blackburn ADR21 Aluminum Dual-Rated Mechanical Connector 2/0-14 AWG Tin Plated

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Model: ADR21
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$54.61
$2.41
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Blackburn ADR21 Aluminum Dual-Rated Mechanical Connector 2/0-14 AWG Tin Plated

Professional aluminum connector for versatile wire management applications

The Blackburn ADR21 delivers reliable electrical connections for conductors ranging from 2/0 to 14 AWG. This dual-rated mechanical connector features aluminum construction with tin plated surface finishing for enhanced conductivity and corrosion resistance. Designed for single conductor applications with 1/4 inch spacing, this connector meets UL E9809 standards for professional electrical installations.

Professional Features & Benefits

  • 2/0-14 AWG Range: Accommodates a wide variety of conductor sizes for versatile installation flexibility
  • Aluminum Construction: Lightweight yet durable material provides reliable mechanical strength and electrical performance
  • Tin Plated Surface: Enhanced surface finishing improves conductivity and provides superior corrosion protection
  • Dual-Rated Design: Mechanical connector configuration ensures secure connections for demanding applications
  • UL E9809 Listed: Meets rigorous safety and performance standards for professional electrical work
  • 1/4 Inch Spacing: Precise spacing specification ensures proper fit and installation compatibility

Technical Specifications

  • Country Of Origin: Mexico (MX)
  • Department: Electrical
  • Insulation Material: None
  • Material: Aluminum
  • Number Of Conductors: 1
  • Product Group: Wire & Cable Management
  • Product Subgroup: Connectors
  • Product Type: Dual-Rated Mechanical Connector
  • Selling Unit Of Measure: each
  • Spacing: 1/4 in
  • Standards: UL E9809
  • Surface Finishing: Tin Plated
  • Type2: Mechanical connectors

Professional Applications

  • Residential Electrical Systems
  • Commercial Building Wiring
  • Industrial Control Panels
  • Electrical Distribution Equipment
  • Wire Management Systems
  • Professional Electrical Installations

Why Choose Blackburn Quality?

Blackburn mechanical connectors deliver proven reliability through UL E9809 listing and precision aluminum construction. The tin plated surface finishing ensures long-term performance and corrosion resistance, making this connector ideal for demanding electrical applications where secure connections are essential.

Manufacturer Resources

Product Specs

Country Of Origin:
Mexico (MX)
Insulation Material:
None
Number Of Conductors:
1
Product Group:
Wire & Cable Management
Product Type:
Dual-Rated Mechanical Connector
Selling Unit Of Measure:
each
Spacing:
1/4 in
Standards:
UL E9809
Surface Finishing:
Tin Plated
Type2:
Mechanical connectors
Department:
Electrical
Product Subgroup:
Connectors
Product Material:
Aluminum

Blackburn ADR21 – Frequently Asked Questions

1) Can the Blackburn ADR21 connector be used on both copper and aluminum conductors?
Yes. The ADR21 is a dual-rated mechanical connector, meaning it is rated for both copper and aluminum conductors. The body itself is aluminum with a tin plated finish, which is the standard construction for dual-rated lugs because the plating limits galvanic corrosion at a copper-to-aluminum interface.
2) What wire sizes will the Blackburn ADR21 accept?
The ADR21 takes a single conductor from 2/0 AWG down to 14 AWG. That one range covers most feeder taps, panel grounds and branch circuit terminations, so an electrician can stock one part instead of several size-specific lugs. It is a one-conductor connector, not a multi-tap body.
3) Is the Blackburn ADR21 UL listed for commercial and industrial work?
The ADR21 carries UL file E9809, which is what an inspector or a spec writer on a commercial or industrial job will want to see on a mechanical connector. It is used in building wiring, control panels and distribution equipment.
4) Does the ADR21 connector come insulated, or do I need to cover it after landing the wire?
It ships bare. Insulation material on the ADR21 is listed as none, so the connection has to be insulated in the field with tape or a suitable cover, or else installed inside an enclosure where that is not required.
5) What is the 1/4 inch spacing on the Blackburn ADR21 connector?
Spacing on the ADR21 is 1/4 inch, the mounting hole and stud dimension the connector is built around. Check the stud or bolt on the bus, panel or ground bar you are landing on matches before ordering, since that dimension decides whether it bolts up without drilling.
6) Is the Blackburn ADR21 sold individually or in a box quantity?
It is sold each, one connector per unit, so you can buy exactly the count a job needs. The orderable part number is ADR21.
7) Will a tin plated aluminum connector hold up in a damp or corrosive location?
Tin plating over the aluminum body is there specifically for corrosion resistance and to keep contact resistance stable over time. That is what makes it workable in outdoor enclosures and damp industrial spaces, though the connection still needs to be protected inside a suitable enclosure since the lug itself is bare metal with no insulation.
8) Where is the Blackburn ADR21 connector made?
Country of origin on the ADR21 is Mexico, which matters if you are filing origin documentation on a government or institutional purchase.
How fast can I get the Blackburn ADR21 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Blackburn ADR21 come with a warranty?
Absolutely. The Blackburn ADR21 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Blackburn ADR21?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Blackburn ADR21 from ZenSupply?
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