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CU TP SPLICE SHORT 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 CSP40 – Frequently Asked Questions
1) What wire size does the Blackburn CSP40 splice connector take?
The CSP40 is sized for 4/0 stranded copper conductor, per the product designation CU TP SPLICE SHORT BRL 4/0STR. It is a compression splice, so both conductor ends are crimped into the barrel with a die tool rather than bolted or set-screwed. If your run is a different gauge, you need the matching Blackburn CSP part for that size, not this one.
2) Can I use the CSP40 on aluminum conductor or only copper?
Copper only. The CSP40 barrel is copper, tin plated, and it is designated CU. Tin plating protects the copper from oxidation but it does not make the connector dual-rated. For aluminum or an aluminum-to-copper transition you need a connector specifically marked AL or AL9CU.
3) What voltage can this splice be used at, and does it come insulated?
The CSP40 carries a 35 kV voltage rating, which covers medium-voltage cable splicing as well as any building-wiring application. It ships with no insulation on the barrel, so the splice has to be insulated in the field with the appropriate tape, cold-shrink, or heat-shrink system for your operating voltage.
4) Is the purple color on this Blackburn splice just cosmetic, or does it mean something?
Purple is the die color code on this compression splice, and it tells the installer which crimp die and index to use on the tool. The CSP40 is listed as purple, so match your compression head die to that code. Getting the die wrong is the usual cause of a failed pull test on a 4/0 splice.
5) What does short barrel mean on this splice, and when would I want it instead of a long barrel?
Short barrel means fewer crimps and a shorter overall splice length, which is what you want in a tight pull box, a crowded gutter, or where the finished splice has to fit inside a limited insulating sleeve. A long barrel version gives more crimp area and more length to cover. The CSP40 is the short barrel version for 4/0 stranded copper.
6) Is a compression splice like the CSP40 the right choice, or should I use a mechanical set-screw connector?
A compression splice is the choice where the joint has to be permanent, low-profile, and pull-resistant, which is why it is standard on feeder and medium-voltage cable. The trade-off is that you need the correct hydraulic or battery crimp tool and the purple die, and the joint cannot be taken apart. A mechanical set-screw or bolted connector needs only a wrench and can be reopened, but it is bulkier and depends on torque staying put. The CSP40 is the compression type, 4/0 stranded copper, rated 35 kV.
7) Do I get one splice or a bag when I order the Blackburn CSP40?
The CSP40 sells each, so one order quantity is one splice connector. Order one per joint, and remember each splice also needs its own insulating kit since the barrel comes bare.
8) What is the exact part number and origin for the Blackburn 4/0 copper compression splice?
Manufacturer part number CSP40, Blackburn brand, made in Mexico. That MPN is the one to quote for the 4/0 stranded copper short barrel splice in purple die code.
How fast can I get the Blackburn CSP40 delivered?
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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 CSP40 come with a warranty?
Absolutely. The Blackburn CSP40 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 CSP40?
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