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Manufacturer Resources
Product Specs
- Country Of Origin:
- Mexico (MX)
- Product Group:
- Wire & Cable Management
- Product Type:
- Mechanical connectors
- Selling Unit Of Measure:
- each
- Type2:
- Mechanical connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
Blackburn ADR21-21R – Frequently Asked Questions
1) Is the Blackburn ADR21-21R aluminum or copper, and can I use it on copper conductors?
It's an aluminum body connector (the "AL" in the part description). Aluminum-bodied mechanical connectors of this style are dual rated for aluminum and copper conductors, which is why they get used for AL-to-CU transitions, but confirm the AL9CU marking stamped on the part matches the conductor metals on your job before you land copper in it.
2) Should I use a mechanical connector like the ADR21-21R or a compression lug?
Pick the mechanical connector when you want to terminate in the field with hand tools and when conductor sizes vary, since one body covers 2/0 down to 14. Pick a compression lug when you need a permanent, tool-verified crimp, a lower profile, or a two-hole pad for a spec that calls for anti-rotation. For a single-conductor, single-hole termination there's no need for a two-conductor body like this one.
3) Do I get one connector or a pack when I order the Blackburn ADR21-21R?
Priced and sold each, so one order quantity equals one connector. If you're bonding a run of enclosures or a ground bar with multiple taps, count the number of terminations and order that many.
4) What is the manufacturer part number for this Blackburn two-conductor connector, and where is it made?
Blackburn ADR21-21R is the manufacturer part number to order or cross reference against. Country of origin is Mexico, which matters if your project carries domestic-sourcing or country-of-origin documentation requirements.
How fast can I get the Blackburn ADR21-21R 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 ADR21-21R come with a warranty?
Absolutely. The Blackburn ADR21-21R 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 ADR21-21R?
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 ADR21-21R from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.