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Manufacturer Resources
Product Specs
- Cable Size:
- 4/0 AWG
- Country Of Origin:
- Mexico (MX)
- Product Group:
- Wire Termination
- Product Type:
- Aluminum Two-Hole Lug
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809
- Stud Size:
- 1/2 in
- Sub Brand Label:
- Blackburn
- Type2:
- Cable or wire lug
- Department:
- Electrical
- Product Subgroup:
- Lugs
- Product Color:
- White
- Product Material:
- Aluminum
Blackburn ATL402 – Frequently Asked Questions
1) What wire size does the Blackburn ATL402 lug take?
The ATL402 is sized for 4/0 AWG conductor. It's a compression lug, so the barrel is crimped onto the conductor with a hydraulic or battery crimper and the correct die, not tightened with a set screw. One lug per package, sold each, so order a piece for every conductor you're terminating plus spares.
2) Will the ATL402 bolt to a 1/2 inch stud or busbar hole pattern?
Yes. The pad is drilled for 1/2 inch hardware and carries two holes, so it bolts to a 1/2 inch stud pattern on a busbar, panel pad, or ground bar. Two-hole mounting keeps the lug from rotating under load, which is why it gets specified on service equipment and ground bars instead of a single-hole tongue.
3) Can I use an aluminum lug like the ATL402 on copper conductor?
The ATL402 body is aluminum, and aluminum compression lugs of this type are dual rated for aluminum or copper conductor when so listed. Confirm the AL9CU dual rating stamped on the lug itself against the 4/0 conductor you're terminating, and use the die called out on the barrel. The relevant listing reference for this part is UL E9809.
4) What's the difference between a two-hole compression lug and a mechanical set-screw lug for 4/0?
Two different install methods. The ATL402 is a compression type: you strip the 4/0, seat it in the barrel, and crimp with the matching die, giving a permanent termination with no torque to re-check later. A mechanical set-screw lug is reusable and needs no crimper, but it has to be torqued to spec and re-verified. Compression is the usual choice where the connection is buried behind a deadfront or in a spot nobody will revisit. The two-hole pad on this one also resists turning under fault current, unlike a single-hole tongue.
5) I need to order Blackburn 4/0 two-hole lugs by part number for a submittal. What's the number and where is it made?
Order as Blackburn ATL402. It's the 4/0 AWG aluminum two-hole compression lug with 1/2 inch stud holes, made in Mexico, and sold as individual pieces rather than in a carton quantity.
How fast can I get the Blackburn ATL402 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 ATL402 come with a warranty?
Absolutely. The Blackburn ATL402 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 ATL402?
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