You may also like
400 AL TP COMP LUG 1HL 5/8IN GRN
Manufacturer Resources
Product Specs
- Country Of Origin:
- Mexico (MX)
- Product Group:
- Wire Termination
- Product Type:
- Aluminum One-Hole Lug
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809
- Stud Size:
- 5/8 in
- Sub Brand Label:
- Blackburn
- Type2:
- Cable or wire lug
- Voltage Rating:
- 35 kV
- Department:
- Electrical
- Product Subgroup:
- Lugs
- Product Color:
- Green
- Product Material:
- Aluminum
Blackburn ATL400-58 – Frequently Asked Questions
1) What wire size does the Blackburn ATL400-58 compression lug take?
The ATL400-58 is a 400 kcmil aluminum compression lug. The 400 in the part number is the conductor size it is die-crimped onto, and the green color code identifies that 400 kcmil die/lug combination on the crimp tool chart. It terminates one conductor per lug and is sold each.
2) Will this lug bolt to a 5/8 inch stud on my switchgear pad?
Yes. The ATL400-58 has a single bolt hole sized for a 5/8 inch stud, so it lands directly on a 5/8 inch bus stud or pad bolt. One hole means one bolt point, so it is not a two-hole NEMA-spaced pad lug; if your pad requires two-hole mounting for anti-rotation, you need a two-hole version instead.
3) Is this Blackburn lug rated for medium voltage work?
It carries a 35 kV voltage rating, which covers medium-voltage terminations up to 35 kV class as well as any 600 V application. It is UL listed under file E9809.
4) Can I use this aluminum lug on copper conductor?
The ATL400-58 is an aluminum-bodied compression lug. Aluminum compression barrels in the Blackburn AL series are dual-rated AL/CU only when the lug is marked as such, so treat this one as an aluminum-conductor lug and use a copper or AL9CU-marked barrel for 400 kcmil copper. Aluminum body on a copper pad is fine electrically as long as the connection is made with the correct hardware and an inhibitor.
5) Is this a compression lug or a mechanical set-screw lug?
Compression. The ATL400-58 is die-crimped onto the conductor with a hydraulic crimp tool, not tightened with a set screw. That means no re-torque maintenance and a sealed barrel, but you need the matching die for the green 400 kcmil range. If you want a terminal you can install with a hex key and no press, look at a mechanical set-screw lug instead.
6) Do I need anything else to complete the termination with this lug?
The lug itself is the only piece supplied. You provide the 5/8 inch bolt, nut, and washers for the pad, a hydraulic crimper with the die matching the green 400 kcmil code, and joint compound if you are landing aluminum. Heat shrink or tape over the barrel is job-specific and not included.
7) What is the correct Blackburn part number to order and how does it ship?
Order Blackburn ATL400-58. It is sold as a single lug, each, so a three-phase plus neutral termination needs four pieces. Country of origin is Mexico.
How fast can I get the Blackburn ATL400-58 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 ATL400-58 come with a warranty?
Absolutely. The Blackburn ATL400-58 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 ATL400-58?
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 ATL400-58 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.