You may also like
AL TP 2CNDTR 1HOLE MOUNT 500-1000
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:
- 5/8 in
- Standards:
- UL E9809
- Surface Finishing:
- Tin-Plated
- Type2:
- Mechanical connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Material:
- Aluminum
Blackburn ADR99-21 – Frequently Asked Questions
1) What wire range does the Blackburn ADR99-21 mechanical lug accept?
The ADR99-21 is built for large feeder conductors in the 500 through 1000 range called out in its description, with two conductor ports. It is a dual-rated mechanical connector, so it lands either copper or aluminum conductors.
2) Is the Blackburn ADR99-21 rated for both copper and aluminum conductors?
Yes. It is a dual-rated mechanical connector, so it takes copper or aluminum. The body itself is aluminum with a tin-plated finish, which is what makes it safe to land copper without a dissimilar-metal problem.
3) How does the ADR99-21 mount to a bus bar or panel?
It is a one-hole mount lug, so it lands on a single bolt at the bar or pad. The two conductor barrels sit on 5/8 inch spacing, which is the figure to check against your existing bus drilling and against phase clearance in the enclosure.
4) Do I need two lugs to land two conductors, or does one ADR99-21 handle both?
One ADR99-21 handles both. It is a two-conductor lug on a single one-hole mounting pad, so a parallel feeder run lands on one bolt instead of two separate lugs. It is sold each, so order one per termination point.
5) Is a tin-plated aluminum lug OK for an outdoor or damp service entrance?
The tin plating over the aluminum body is what resists oxidation at the contact surface and lets the lug take copper conductors without direct aluminum-to-copper contact. For exterior or wet-location terminations you still need the appropriate joint compound and an enclosure rated for the location.
6) What is the exact part number and manufacturer for this two-conductor mechanical lug?
Blackburn ADR99-21. That MPN is what a distributor or submittal package should show for a tin-plated aluminum, dual-rated, two-conductor, one-hole mount lug in the 500 to 1000 range.
How fast can I get the Blackburn ADR99-21 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 ADR99-21 come with a warranty?
Absolutely. The Blackburn ADR99-21 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 ADR99-21?
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
Why buy the Blackburn ADR99-21 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.