Blackburn High Strength Split-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$314.98
$91.60
Blackburn 350HPS HSTRNGTH SPLITBOLT CONN 266.8-1/0

Blackburn High Strength Split-Bolt Connector 266.8-1/0 AWG Copper Alloy with Tin Plating

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Model: 350HPS
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$314.98
$91.60
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Blackburn High Strength Split-Bolt Connector 266.8-1/0 AWG

Professional Mechanical Wire Connection Solution

The Blackburn High Strength Split-Bolt Connector delivers reliable electrical connections for 266.8-1/0 AWG conductors. Constructed from copper alloy with electro tin-plated surface finishing, this mechanical connector provides professional-grade performance for electrical installations requiring secure wire-to-wire connections.

Professional Features & Benefits

  • 266.8-1/0 AWG Capacity: Accommodates a wide range of conductor sizes for versatile installation applications
  • Copper Alloy Construction: Provides excellent conductivity and mechanical strength for long-term reliability
  • Electro Tin-Plated Finish: Enhances corrosion resistance and ensures optimal electrical contact over time
  • High Strength Design: Engineered for demanding applications requiring secure mechanical connections
  • UL E9809 Listed: Meets rigorous safety and performance standards for professional electrical installations
  • Split-Bolt Configuration: Enables efficient installation and maintenance with standard tools

Technical Specifications

  • Country Of Origin: Mexico (MX)
  • Department: Electrical
  • Material: Copper Alloy
  • 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

  • Electrical Panel Connections
  • Service Entrance Applications
  • Industrial Wiring Systems
  • Commercial Electrical Installations
  • Utility Distribution Networks
  • Grounding System Connections
  • Emergency Power Systems

Why Choose Blackburn Quality?

Blackburn delivers proven reliability through UL E9809 listing and professional-grade copper alloy construction with electro tin-plated finishing. This high strength split-bolt connector ensures dependable performance in demanding electrical applications where secure mechanical connections are essential.

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:
Copper Alloy

Blackburn 350HPS – Frequently Asked Questions

1) What wire sizes does the Blackburn 350HPS split-bolt connector take?
The Blackburn 350HPS high strength split-bolt handles conductors from 1/0 AWG up to 266.8 kcmil. That range covers typical service entrance and feeder taps, so if your run tap and main both land inside 1/0 through 266.8, one connector takes both. Anything smaller than 1/0 needs a smaller split-bolt.
2) Is the 350HPS split-bolt UL listed for electrical inspection?
It carries a UL listing under file E9809. That is the reference an inspector or spec writer will want against a mechanical connector on a service entrance or feeder tap.
3) Can I use this split-bolt on aluminum conductors, or copper only?
The 350HPS is a copper alloy body with an electro tin-plated finish, which is a copper-conductor connector. For aluminum or aluminum-to-copper taps you want a connector specifically rated AL9CU or dual-rated, not this one. Using a copper-only split-bolt on aluminum risks a bad, corroding joint.
4) Does a split-bolt like the 350HPS need to be taped or insulated after installation?
Yes. A split-bolt is a bare mechanical connector, so the finished joint has to be re-insulated to the level of the conductor insulation, normally with rubber splicing tape covered by vinyl electrical tape, or an insulating cover. Order that tape or cover separately, it does not come with the connector.
5) Can I use this split-bolt for a grounding electrode or bonding connection?
Grounding system connections are among the listed applications for the 350HPS, along with panel connections, service entrance work, industrial and utility distribution wiring. It is a copper connector, so keep it to copper grounding conductors within the 1/0 to 266.8 range, and confirm your local code accepts a mechanical connector for the specific grounding point, since some electrode connections call for irreversible compression or exothermic.
6) Why is the 350HPS tin plated instead of bare copper?
The electro tin plating on the copper alloy body slows corrosion at the contact surface, which matters in damp pull boxes, handholes, service entrances and outdoor gear where a bare copper joint would oxidize. Electrically it stays a copper alloy connector; the plating is about keeping the contact clean over time.
7) Is the 350HPS sold individually or in a box of connectors?
It is sold each, so quantity ordered equals quantity of connectors. If you are splicing a three phase feeder plus neutral, order four.
8) What tools do I need to install a Blackburn 350HPS split-bolt?
Standard hand tools, no crimper or die set. The split-bolt design tightens with a wrench or socket on the nut, which is why it is used for field splices and maintenance work where a hydraulic crimper is not practical. Brush the conductors clean, seat them in the bolt, torque the nut, then insulate the joint.
9) Where is the Blackburn 350HPS connector made?
Country of origin is Mexico. That is the detail procurement and government buyers ask about for domestic-preference or trade-agreement sourcing requirements.
How fast can I get the Blackburn 350HPS 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 350HPS come with a warranty?
Absolutely. The Blackburn 350HPS 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 350HPS?
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 350HPS from ZenSupply?
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