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Manufacturer Resources
Product Specs
- Connection Type:
- Compression
- Country Of Origin:
- United States (US)
- Insulation Material:
- None
- Number Of Conductors:
- 2
- Product Group:
- Wire Connectors & Terminals
- Product Type:
- Compression Reducing Splice
- Selling Unit Of Measure:
- each
- Standards:
- ANSI C119.4
- Surface Finishing:
- Tin-Plated
- Type2:
- Wire or cable compression splice
- Department:
- Electrical
- Product Subgroup:
- Wire Connectors
- Product Size:
- 2-1/4 inch long
Blackburn AC 4 TN – Frequently Asked Questions
1) What is the Blackburn AC 4 TN actually used for?
The Blackburn AC 4 TN is an aluminum compression reducer splice, sized for No. 4 conductor, used to splice or reduce between two conductors. It is a two-conductor compression connector, so one crimped barrel accepts each run. Being a reducer, it is the part you reach for when the two cable sizes coming together are not the same.
2) Can I use the AC 4 TN on copper as well as aluminum conductors?
The AC 4 TN is a tin-plated aluminum body. Tin plating on an aluminum barrel is what makes a connector suitable for aluminum-to-copper and copper-to-copper work as well as aluminum-to-aluminum, because the plating separates the dissimilar metals at the contact surface. It meets ANSI C119.4, the standard that covers connectors for aluminum and copper conductors.
3) Does the AC 4 TN need a special crimp tool, or can I use a mechanical setscrew connector instead?
This is a compression connector, so it is installed with a hydraulic or battery crimp tool and the correct die, not a wrench. If you do not have a compression tool on the truck, a mechanical setscrew reducer or split-bolt is the alternative for the same splice, but it will not give you the ANSI C119.4 compression joint this part is built for. Pick based on the tooling you actually have on site.
4) Is the Blackburn AC 4 TN insulated, or do I need to cover it after crimping?
No insulation on it. The AC 4 TN is a bare tin-plated barrel, so the splice has to be insulated in the field, typically with heat shrink or tape rated for the circuit, unless it sits inside an enclosure or a taped-up pad-mount application where a bare connector is acceptable.
5) How long is the AC 4 TN splice? I need to know if it fits in my box or sleeve.
It measures 2-1/4 inches long. That is the figure to check against the working length inside your junction box, pedestal, or the heat shrink sleeve you plan to slide over it, plus room for the crimp tool jaws on each barrel.
6) Is the AC 4 TN made in the USA? We have a domestic-preference spec on the project.
Country of origin is the United States, which is the answer a Buy American or domestic-preference line item on a government, school, or utility spec is looking for. The part designation to cite on the submittal is Blackburn AC 4 TN.
7) Is the Blackburn AC 4 TN sold individually or in a bag?
Sold each, by the single piece, under part number AC 4 TN. For a job with several splices you order the count you need rather than a fixed carton.
How fast can I get the Blackburn AC 4 TN 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 AC 4 TN come with a warranty?
Absolutely. The Blackburn AC 4 TN 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 AC 4 TN?
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 AC 4 TN from ZenSupply?
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and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.