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CU TP SPLICE LONG BRL 4/0STR PUR
Manufacturer Resources
Product Specs
- Country Of Origin:
- Mexico (MX)
- Insulation Material:
- None
- Product Group:
- Wire & Cable Management
- Product Type:
- Splice Connector
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809
- Sub Brand Label:
- Blackburn
- Surface Finishing:
- Tin Plated
- Type2:
- Wire or cable compression splice
- Voltage Rating:
- 35 kV
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Color:
- Purple
- Product Material:
- Copper
Blackburn CU40 – Frequently Asked Questions
1) What wire size does the Blackburn CU40 splice take?
The CU40 is sized for 4/0 stranded copper conductor, which is what the "4/0STR" in the description refers to. It is a single-size compression splice, so it is not adjustable down to smaller conductors - match the barrel to the exact conductor size you are joining.
2) Can I use the CU40 splice on medium voltage cable?
Yes. The CU40 carries a 35 kV voltage rating, so it is suitable for medium voltage copper cable splicing as well as low voltage work. It is a bare connector with no insulation on it, so the splice has to be insulated in the field with tape, heat shrink, or a splice kit rated for your system voltage.
3) Can this copper splice be used on aluminum conductor?
No. The CU40 is a copper-only splice, tin plated. For aluminum or for an aluminum-to-copper transition you need a connector marked AL9CU or an aluminum body connector, not this one.
4) Is the purple color on this Blackburn splice just cosmetic or does it mean something?
Purple is the die-code color for this barrel. Blackburn color-codes compression connectors so the crimping tool die matches the connector, and the CU40 is coded purple. Use the purple die in your compression tool when you crimp it.
5) Why is this called a long barrel splice, and does that change the crimp?
The long barrel gives more contact length on each conductor, which means more crimps per side than a standard barrel. Plan on crimping both halves of the barrel with the correct purple die, working out from the center stop toward each end.
6) Does the tin plating on the CU40 matter for a damp or buried splice?
Tin plating over the copper barrel resists oxidation at the contact surfaces, which is why it is the standard finish for splices going into wet locations, handholes, or direct burial applications. You still need to seal the splice - the connector itself ships bare with no insulation.
7) How is the Blackburn CU40 sold - individually or in a bag?
Each. One CU40 splice per unit, manufacturer part number CU40, made in Mexico. Count one per conductor joint, so a three-phase splice with a neutral needs four.
How fast can I get the Blackburn CU40 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 CU40 come with a warranty?
Absolutely. The Blackburn CU40 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 CU40?
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 CU40 from ZenSupply?
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and
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every order.
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