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AL Comp Stack Lug 500 Tin Plated
Manufacturer Resources
Product Specs
- Connection Type:
- Compression
- Country Of Origin:
- United States (US)
- Insulation Material:
- None
- Product Group:
- Wire & Cable Management
- Product Type:
- Compression Lug Two Hole Stacking
- Selling Unit Of Measure:
- each
- Standards:
- ANSI C119.4
- Surface Finishing:
- Tin Plated
- Type2:
- Wire connectors
- Wire Size:
- 477 to 500 kcmil500 to 600 kcmil
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Size:
- 7.375 inch long
Blackburn ASL 500 NTNK – Frequently Asked Questions
1) What conductor size does the Blackburn ASL 500 NTNK lug take?
The ASL 500 NTNK compression lug is sized for 477 to 500 kcmil and 500 to 600 kcmil conductor. It is a compression connector, so it is crimped onto the conductor with the correct die, not bolted or set-screwed.
2) Can I use this aluminum lug on copper conductor?
Yes. The ASL 500 NTNK is an aluminum body lug that is tin plated, which is the standard construction for a dual-rated AL/CU compression lug and is what lets it land on either aluminum or copper conductor of the stated size range. The tin plating also protects the aluminum barrel and the pad face where it bolts to a copper bus.
3) What does a two hole stacking lug get me over a standard one hole lug?
Two things. The two hole NEMA pad resists the lug rotating on the bus when the conductor is torqued or pulled, which a single bolt pad does not. The stacking design means you can bolt a second lug face to face on the same pair of bus holes, so two 500 kcmil runs land on one bus location without adding a second tap. If you only have one conductor per bus point and no rotation concern, a plain one hole compression lug is the simpler part.
4) Will this 500 kcmil stacking lug fit in my gutter or panel wiring space?
Plan for 7.375 inches of overall length on each lug, measured barrel end to pad end. That is the figure that decides whether the bend radius on a 500 kcmil conductor plus the lug body clears the back of a panel or the side of a gutter. Stacking a second lug on the same pad adds pad thickness but not length.
5) Does the Blackburn ASL 500 NTNK meet a recognized connector standard for a spec job?
It is built to ANSI C119.4, the standard covering connectors for use between aluminum and aluminum or aluminum and copper conductors. That is the reference a submittal reviewer looks for on a compression lug landing large aluminum feeders. The part is made in the United States.
6) Is this lug insulated?
No. The ASL 500 NTNK ships as a bare tin plated aluminum barrel with no insulation on it. In an enclosure or panel where you need the barrel and crimp covered, you add heat shrink or a snap-on insulating boot sized to the barrel separately.
7) Do I get a pair of lugs or just one when I order the ASL 500 NTNK?
One lug. The selling unit is each, so a stacked pair on a single bus pad means ordering two, and a three phase plus neutral termination with two conductors per phase means counting the terminations, not the phases.
8) What is the manufacturer part number for this Blackburn stacking lug?
Blackburn part number ASL 500 NTNK. It is the tin plated aluminum two hole stacking compression lug for 500 kcmil class conductor.
How fast can I get the Blackburn ASL 500 NTNK delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 ASL 500 NTNK come with a warranty?
Absolutely. The Blackburn ASL 500 NTNK 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 ASL 500 NTNK?
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