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Manufacturer Resources
Product Specs
- Country Of Origin:
- Mexico (MX)
- Product Group:
- Wire Termination
- Product Type:
- Standard Barrel
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809
- Stud Size:
- 1/2 in
- Sub Brand Label:
- Blackburn
- Type2:
- Cable or wire lug
- Voltage Rating:
- 35 kV
- Department:
- Electrical
- Product Subgroup:
- Lugs
- Product Color:
- Blue
- Product Material:
- Copper
Blackburn CTL400-12 – Frequently Asked Questions
1) What wire size does the Blackburn CTL400-12 compression lug take?
The CTL400-12 is sized for 400 kcmil copper conductor, which is what the 400 in the part number designates. It's a copper compression (crimp) lug, not a mechanical set-screw connector, so the barrel gets crimped onto the conductor with the matching die. The blue color code on the barrel is the die/size identifier for that 400 kcmil range.
2) Will this lug bolt to a 1/2 inch stud on my switchgear bus?
Yes. The CTL400-12 has a single bolt hole sized for a 1/2 inch stud, so it lands directly on a 1/2 inch bus stud or pad. One hole only, so if your pad is drilled two-hole NEMA spacing you need a two-hole lug instead.
3) Is this Blackburn lug rated for medium voltage terminations?
It carries a 35 kV voltage rating, so it's usable on medium-voltage cable terminations up to that class as well as ordinary low-voltage work. It's UL listed under file E9809.
4) Can I use a copper compression lug like the CTL400-12 on aluminum conductor?
No. This is a copper-bodied lug intended for copper conductor. Aluminum cable needs an aluminum or dual-rated AL9CU connector; putting bare copper on aluminum invites galvanic corrosion at the crimp. Order the aluminum-bodied equivalent for AL feeders.
5) What does short barrel mean on the CTL400-12, and when would I not want it?
Short barrel means a single crimp-length barrel rather than a long barrel that takes two or more crimps. It's the choice when space behind the termination is tight, such as a crowded gutter or a cable head with limited room. Where the spec calls for a long-barrel lug with multiple crimps for pull-out strength, this one won't satisfy it.
6) Is the Blackburn CTL400-12 sold individually or in a box?
Each. The selling unit is one lug, so you order the exact count you need rather than a bag or carton quantity.
7) What is the exact manufacturer part number and where is this lug made?
Blackburn part number CTL400-12, country of origin Mexico. That MPN is what to quote when matching an existing installation or cross-referencing a spec.
How fast can I get the Blackburn CTL400-12 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 CTL400-12 come with a warranty?
Absolutely. The Blackburn CTL400-12 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 CTL400-12?
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product
selection,
installation tips, and troubleshooting. Contact Us
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