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ALUM 4HOLE NEMA LUG CONCENTRIC 1272
Manufacturer Resources
Product Specs
- Connection Type:
- Compression
- Country Of Origin:
- United States (US)
- Product Group:
- Wire & Cable Management
- Product Type:
- Compression Lug Four Hole
- Selling Unit Of Measure:
- each
- Standards:
- ANSI C119.4
- Type2:
- Wire connectors
- Wire Size:
- 1272 kcmil
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Size:
- Length 11-1/4 inches
Blackburn AL 1272-4 N – Frequently Asked Questions
1) What conductor size does the Blackburn AL 1272-4 N lug take?
The AL 1272-4 N is sized for 1272 kcmil conductor. It is a one-size compression lug, so it is not a range-taking connector, the barrel is built for that single conductor size. If your cable is a different kcmil, you need the matching lug in the AL series rather than this one.
2) Will a four-hole NEMA lug bolt to a standard switchgear or transformer pad?
Yes. The AL 1272-4 N has a four-hole NEMA drilling pattern, which is the standard bolt pattern used on large switchgear bus, transformer terminals, and substation pads at this conductor size. Four holes spread the clamping force and the current path across the pad, which is why utilities and large service installs specify them over two-hole pads on heavy feeders.
3) Is the Blackburn AL 1272-4 N crimped or bolted onto the cable?
Crimped. It is a compression lug, so the barrel is installed with a hydraulic compression tool and the correct die for the barrel, not tightened with a set screw. Plan on having the crimp tool and die on site before the cable is pulled, and follow the die and number-of-crimps marking on the barrel.
4) Can I use an aluminum lug on a copper conductor?
The AL 1272-4 N is an aluminum-bodied lug. Blackburn AL series compression lugs of this kind are aluminum bodies intended for aluminum conductor; if you are terminating copper at 1272 kcmil, order a copper compression lug instead. Mixing the two without a connector rated for it invites galvanic corrosion at the barrel.
5) How long is the AL 1272-4 N lug, and will it clear the gear enclosure?
Overall length is 11-1/4 inches. That is a long body, four bolt holes plus a full compression barrel for 1272 kcmil, so check your cable bending space and the depth from the pad to the enclosure wall before you commit. In tight gear, the pad-to-barrel run is often what forces a different termination method.
6) What standard does this Blackburn compression lug meet for an inspected commercial install?
It is built to ANSI C119.4, the standard covering connectors for aluminum and copper conductors. That is the reference an inspector or utility engineer will look for on a 1272 kcmil feeder termination.
7) Is this Blackburn lug made in the USA for a Buy American job?
Country of origin is the United States. For federal, transit, or utility work carrying domestic-sourcing language, the AL 1272-4 N documents as US origin.
8) What is the exact part number to order this four-hole aluminum lug?
Manufacturer part number is AL 1272-4 N from Blackburn. The number reads directly: AL for the aluminum body, 1272 for the kcmil conductor, and 4 for the four-hole NEMA pad.
9) Does the Blackburn AL 1272-4 N come as a single lug or in a pack?
Sold each. One lug per unit, so for a three-phase feeder with a neutral you would order four, plus spares for any crimp that has to be cut off and redone.
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Does the Blackburn AL 1272-4 N come with a warranty?
Absolutely. The Blackburn AL 1272-4 N is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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