Blackburn ADR25-21 Aluminum Du...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$83.70
$16.90
Blackburn ADR25-21 AL CONN 250 KCMIL,MIN:6 STR

Blackburn ADR25-21 Aluminum Dual-Rated Mechanical Connector 250 KCMIL with Tin-Plated Finish

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Model: ADR25-21
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$83.70
$16.90
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Blackburn ADR25-21 Aluminum Dual-Rated Mechanical Connector 250 KCMIL with Tin-Plated Finish

Professional Electrical Connection Solution for High-Capacity Applications

The Blackburn ADR25-21 aluminum dual-rated mechanical connector delivers reliable electrical connections for 250 KCMIL conductors with professional-grade performance. This tin-plated aluminum connector accommodates 2 conductors with 3/8 inch spacing, providing secure mechanical connection capabilities for demanding electrical installations where dependable conductor joining is essential.

Professional Features & Benefits

  • 250 KCMIL Capacity: Handles high-amperage applications with robust conductor accommodation for demanding electrical systems.
  • Dual-Rated Design: Versatile mechanical connector configuration provides flexibility for various installation requirements and conductor combinations.
  • Aluminum Construction: Lightweight yet durable material offers excellent conductivity while reducing overall system weight and installation complexity.
  • Tin-Plated Surface: Enhanced corrosion resistance and improved conductivity ensure long-term performance and reliable electrical connections.
  • UL E9809 Listed: Meets rigorous safety and performance standards for professional electrical installations and code compliance.
  • 3/8 Inch Spacing: Precise conductor spacing ensures proper clearance and optimal electrical performance in confined installation spaces.
  • 2-Conductor Design: Accommodates dual conductor connections for efficient wire management and streamlined installation processes.

Technical Specifications

  • Country Of Origin: Mexico (MX)
  • Department: Electrical
  • Material: Aluminum
  • Number Of Conductors: 2
  • Product Group: Wire & Cable Management
  • Product Subgroup: Connectors
  • Product Type: Dual-Rated Mechanical Connector
  • Selling Unit Of Measure: each
  • Spacing: 3/8 in
  • Standards: UL E9809
  • Surface Finishing: Tin-Plated
  • Type2: Mechanical connectors

Professional Applications

  • Commercial Electrical Systems
  • Industrial Power Distribution
  • Utility Infrastructure Projects
  • High-Capacity Electrical Installations
  • Professional Electrical Contracting
  • Power Generation Facilities
  • Heavy-Duty Electrical Connections

Why Choose Blackburn Quality?

Blackburn mechanical connectors deliver proven reliability with UL E9809 listing and professional-grade aluminum construction. The tin-plated surface finishing ensures long-term performance and corrosion resistance, making this connector ideal for demanding electrical applications where dependable connections are critical to system performance and safety.

Manufacturer Resources

Product Specs

Country Of Origin:
Mexico (MX)
Number Of Conductors:
2
Product Group:
Wire & Cable Management
Product Type:
Dual-Rated Mechanical Connector
Selling Unit Of Measure:
each
Spacing:
3/8 in
Standards:
UL E9809
Surface Finishing:
Tin-Plated
Type2:
Mechanical connectors
Department:
Electrical
Product Subgroup:
Connectors
Product Material:
Aluminum

Blackburn ADR25-21 – Frequently Asked Questions

1) What conductor range does the Blackburn ADR25-21 connector take?
The ADR25-21 is sized for conductors from 250 KCMIL down to a minimum of 6 AWG stranded, per the product marking. It has two conductor ports, so you're joining or tapping two runs, not three.
2) Can I use this Blackburn connector on copper wire, or aluminum only?
It's dual-rated, so it's listed for both copper and aluminum conductors, including a copper-to-aluminum transition in the same connector. The body is aluminum with a tin-plated surface, which is what makes the copper contact acceptable and slows galvanic corrosion at the joint.
3) Is the Blackburn ADR25-21 UL listed for code inspection?
Yes. It carries UL file E9809, which is what an inspector will want to see on a mechanical lug in a panel or gutter.
4) What is the 3/8 inch spacing on this connector referring to?
3/8 inch is the conductor spacing, the center clearance between the two ports. It matters when you're stacking connectors in a tight enclosure or on a bus, because it sets how close the two runs sit and whether you have room to get a wrench on the set screws.
5) Do I need a crimp tool for the Blackburn ADR25-21?
No crimper needed. It's a mechanical connector, so the conductors are captured by set screws and torqued with a hex key or driver. That's the practical reason contractors pick this style for service work and repairs where you can't get a hydraulic crimper into the enclosure.
6) Is the ADR25-21 sold as a pair or individually?
Individually. The selling unit is each, so one connector per order line. On a three-phase splice plus neutral you'd need four.
7) Will tin plating hold up in a damp or outdoor gutter?
Tin plating over the aluminum body is there for corrosion resistance and is the standard finish for damp and industrial locations. Keep in mind the connector itself isn't an enclosure, so it still needs to sit inside a box, gutter, or pedestal rated for the environment. Use an oxide-inhibiting compound on aluminum conductors per normal practice.
8) What is the exact part number and who makes the ADR25-21?
Blackburn ADR25-21 is the manufacturer part number, an aluminum dual-rated mechanical connector for 250 KCMIL. Country of origin is Mexico.
How fast can I get the Blackburn ADR25-21 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 ADR25-21 come with a warranty?
Absolutely. The Blackburn ADR25-21 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 ADR25-21?
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
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