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ALUM COMP LUG 250MCM 2 HOLE
Manufacturer Resources
Product Specs
- Connection Type:
- Compression
- Country Of Origin:
- United States (US)
- Product Group:
- Wire & Cable Management
- Product Type:
- Compression Lug Two Hole
- Selling Unit Of Measure:
- each
- Standards:
- ANSI C119.4
- Type2:
- Wire connectors
- Wire Size:
- 250 kcmil4/0 AWG
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Size:
- Length 6 inches X 1-15/64 inch wide
Blackburn AL 250 N – Frequently Asked Questions
1) What wire size does the Blackburn AL 250 N compression lug take?
The AL 250 N aluminum compression lug is sized for 250 kcmil and 4/0 AWG conductor. It's a compression connector, so it's crimped onto the conductor with a die-driven tool rather than tightened with a set screw.
2) Will a two hole lug bolt to my standard NEMA drilled bus bar?
Two hole lugs are made to land on NEMA-pattern drilled pads, which is why they're specified on switchgear, transformer pads, and ground bus where a single bolt would let the lug rotate under fault current. The AL 250 N is a two hole compression lug measuring 6 inches long by 1-15/64 inch wide, so confirm your pad has the clear landing depth for a 6 inch tongue before ordering.
3) Does the Blackburn AL 250 N meet ANSI C119.4?
Yes, the AL 250 N is built to ANSI C119.4, the standard covering connectors for use between aluminum and aluminum or aluminum and copper conductors. That's the reference most utility and institutional specs cite for compression connectors.
4) Can I use an aluminum Blackburn lug on copper conductor?
Aluminum-bodied compression lugs like the AL 250 N are commonly dual rated AL9CU, but that rating isn't part of the record here. What is confirmed is the aluminum body, compression termination, and a 250 kcmil / 4/0 AWG conductor range. If your job spec calls for a copper-only termination, specify a copper compression lug in the same conductor size instead.
5) Is the Blackburn AL 250 N made in the USA for a Buy American job?
Country of origin on the AL 250 N is the United States. That matters on federally funded and Buy American Act work where electrical terminations have to be domestically sourced.
6) Do I need a special crimp tool for this lug, or can I use a mechanical set screw connector instead?
This is a compression lug, so it requires a hydraulic or battery crimper with the matching die, and the crimp is permanent. If you don't have a crimp tool on site or you need a termination you can re-land later, a mechanical set screw lug in the same 250 kcmil range is the alternative. The tradeoff is that mechanical lugs need periodic torque checks; a compression crimp doesn't.
7) Is this lug sold individually or in a bag?
The AL 250 N is sold each, so order one per termination. On a three phase feeder with a neutral you'd be counting four per end, eight for both ends.
8) What is the Blackburn part number to order this 250 MCM two hole aluminum lug?
Order it as Blackburn AL 250 N. That's the manufacturer part number for the aluminum two hole compression lug covering 250 kcmil and 4/0 AWG.
How fast can I get the Blackburn AL 250 N delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
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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 AL 250 N come with a warranty?
Absolutely. The Blackburn AL 250 N 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 AL 250 N?
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