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Unplated copper split-bolt connector, square head, 2.6 in long, 1.41 in wide

Burndy

Burndy KS31 Split-Bolt Connector 1/0-350 kcmil

SKU CH-81KF-3E58W

Split-bolt connector joins 1/0 AWG to 350 kcmil copper conductors with 650 in-lb torque and 35 kV rating

  • Product typeElectrical Connectors
  • Connects copper conductors from 1/0 AWG to 350 kcmil
  • Rated for 35 kV maximum voltage with UL 467 and UL 486 A/B compliance
  • Secure torque of 650 in-lb ensures reliable electrical joints
  • Compact 2.6 in length by 1.41 in width fits tight spaces
  • CSA certified and EU RoHS compliant for regulated installations

Copper Split-Bolt Connector

The Burndy KS31 Split-Bolt Connector joins copper conductors in electrical and industrial installations. It accepts run and tap wires from 1/0 AWG up to 350 kcmil. The unplated copper body provides a direct metal-to-metal connection for power distribution work. Rated for up to 35 kV, it suits utility and industrial voltage requirements.

Square Head with 1.7 in Hex Nut

The square head design allows secure tightening with standard tools. A 1.7 in hex nut delivers the specified 650 in-lb torque for reliable contact pressure. Overall dimensions of 2.6 in length and 1.41 in width fit within typical splice enclosures. Certified to UL 467 and UL 486 A/B, plus CSA and EU RoHS, it meets common code requirements for copper-to-copper connections.

ARRA Compliant for Project Use

The connector carries ARRA certification, making it eligible for funded infrastructure projects that mandate compliant components. No additional hardware or compounds are included in the package. Installers must supply appropriate torque tools and insulation materials separately. The item ships direct from the supplier for orders meeting the $75 threshold.

How it compares

Measured against everything we stock in Wire, Cable & Wiring Supplies, at today’s prices. Recalculated every night.

Price $43.99
Pricier than about 64% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand nameBURNDY
Product typeElectrical Connectors

Questions about this item

What voltage does the UL 486 A/B rated KS31 split-bolt handle?

The connector is rated for a maximum of 35 kV under the UL 486 A/B and UL 467 listings.

What are the overall dimensions and hex nut size for the KS31 body?

Overall length is 2.6 in, overall width is 1.41 in, and the square head uses a 1.7 in hex nut.

What is the correct torque setting and the common tightening mistake?

Torque to 650 in-lb; the frequent error is under-torquing the square head bolt.

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