Blackburn Aluminum Split-Bolt ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$92.66
$28.01
Blackburn APS04 AL SPLIT - BOLT 4 - 10 AWG

Blackburn Aluminum Split-Bolt Connector 4-10 AWG Electro Tin-Plated

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Model: APS04
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$92.66
$28.01
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Blackburn Aluminum Split-Bolt Connector 4-10 AWG Electro Tin-Plated

Professional Wire Connection Solution for 4-10 AWG Applications

The Blackburn aluminum split-bolt connector delivers reliable mechanical wire connections for 4-10 AWG conductors. Featuring durable aluminum construction with electro tin-plated surface finishing, this UL E9809 listed connector ensures secure electrical connections in professional electrical installations.

Professional Features & Benefits

  • 4-10 AWG Wire Range: Accommodates multiple conductor sizes for versatile installation flexibility and compatibility across various electrical applications.
  • Aluminum Construction: Provides lightweight yet durable performance with excellent conductivity and corrosion resistance for long-term reliability.
  • Electro Tin-Plated Finish: Enhanced surface protection prevents oxidation and ensures optimal electrical contact throughout the connector's service life.
  • UL E9809 Listed: Meets rigorous safety and performance standards for professional electrical installations and code compliance.
  • Split-Bolt Design: Mechanical connection method provides secure conductor joining without requiring specialized tools or complex installation procedures.
  • Professional Grade Quality: Blackburn engineering delivers consistent performance and reliability for demanding electrical connection applications.

Technical Specifications

  • Country Of Origin: Mexico (MX)
  • Department: Electrical
  • Material: Aluminum
  • Product Group: Wire & Cable Management
  • Product Subgroup: Connectors
  • Product Type: Split-Bolt
  • Selling Unit Of Measure: each
  • Standards: UL E9809
  • Surface Finishing: Electro Tin-Plated
  • Type2: Mechanical connectors

Professional Applications

  • Residential Electrical Systems
  • Commercial Building Wiring
  • Industrial Control Panels
  • Electrical Distribution Equipment
  • Service Entrance Connections
  • Grounding System Applications
  • Maintenance and Repair Operations

Why Choose Blackburn Quality?

Blackburn delivers professional-grade electrical connectors with UL E9809 listing and electro tin-plated finishing for superior performance and durability. The aluminum construction provides reliable conductivity while maintaining lightweight handling characteristics for efficient installation in demanding electrical applications.

Manufacturer Resources

Product Specs

Country Of Origin:
Mexico (MX)
Product Group:
Wire & Cable Management
Product Type:
Split-Bolt
Selling Unit Of Measure:
each
Standards:
UL E9809
Surface Finishing:
Electro Tin-Plated
Type2:
Mechanical connectors
Department:
Electrical
Product Subgroup:
Connectors
Product Material:
Aluminum

Blackburn APS04 – Frequently Asked Questions

1) What wire sizes does the Blackburn APS04 split-bolt connector take?
The APS04 handles conductors from 4 AWG down to 10 AWG. That range covers a typical branch-circuit tap or a ground conductor splice. If your run is larger than 4 AWG, this is the wrong connector and you need a larger split-bolt in the same family.
2) Can I use an aluminum split-bolt like the Blackburn APS04 on copper conductors?
The APS04 body is aluminum with an electro tin-plated finish. Tin plating on an aluminum connector is what allows it to be used on copper as well as aluminum, but the dual-rated marking on the connector or carton is the governing statement - read what is stamped on the part before you land a copper conductor in it. For a copper-only splice, a plain copper split-bolt is the straightforward choice.
3) Do I need a crimp tool or die set to install a split-bolt connector?
No. A split-bolt is a mechanical connector - you lay the conductors between the bolt and the strap and torque the nut with an ordinary wrench. No hydraulic crimper, no dies, no press. That is the main reason maintenance crews and electricians reach for one on a repair or a field tap instead of a compression lug, which needs the matching tool and die.
4) Does the APS04 split-bolt come with insulation, or do I have to tape the splice?
It ships as a bare mechanical connector, sold each. Split-bolts are uninsulated by design, so you insulate the finished splice yourself - rubber splicing tape built back to the conductor insulation level and vinyl tape over it, or a snap-on split-bolt cover sized to the connector. Budget for that material on the job.
5) Can I use the Blackburn APS04 for a grounding electrode or equipment ground splice?
Yes, grounding system splices are one of its listed applications, along with service entrance connections and distribution equipment. The 4 to 10 AWG range covers the common equipment grounding conductor sizes. Note that grounding electrode conductor connections at the electrode itself normally require a connector listed for direct burial or concrete encasement, so check the marking for that specific use.
6) Will the tin plating on this connector hold up in a damp or outdoor pull box?
Electro tin plating over the aluminum body is there to resist oxidation and keep the contact surface clean, which is the failure mode on bare aluminum. For a direct-buried or continuously wet location, still use an appropriate joint compound and an enclosure rated for the environment - the plating protects the connector, not the splice.
7) What is the exact part number and where is the Blackburn APS04 made?
Order it as Blackburn APS04, an aluminum split-bolt for 4-10 AWG. Country of origin is Mexico. It is a single-model item sold individually, so quantity is by the piece rather than by a carton pack.
How fast can I get the Blackburn APS04 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 APS04 come with a warranty?
Absolutely. The Blackburn APS04 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 APS04?
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 APS04 from ZenSupply?
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