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Unplated copper split-bolt connector, square head, 3.9 by 2.19 inches

Burndy

Burndy KS44 Split-Bolt Connector 300-1000 kcmil

SKU CH-QSRV-FV9XT

Split-bolt connector joins 300 to 1000 kcmil copper conductors with 35 kV rating and 1100 in-lb torque

  • Product typeElectrical Connectors
  • Connects copper conductors 300 to 1000 kcmil
  • Meets UL 467 and UL 486 A/B standards
  • CSA certified and EU RoHS compliant
  • Rated for 35 kV maximum voltage
  • Square head design with 2.56 in hex nut

Burndy KS44 Split-Bolt Connector

The Burndy KS44 is a copper split-bolt connector designed for joining copper conductors in electrical installations. It accommodates run and tap wire sizes from 300 to 1000 kcmil, making it suitable for high-current power distribution work. The connector carries a 35 kV maximum voltage rating and is certified to UL 467, UL 486 A/B, CSA and EU RoHS standards.

Square head and 2.56 in hex nut

The connector features a square head style and a 2.56 inch hex nut that accepts standard wrenches for controlled tightening. An unplated copper body ensures direct metal-to-metal contact between conductors without an intermediate coating. The specified torque value is 1,100 in-lb, giving installers a precise target for a reliable mechanical and electrical joint.

300 to 1000 kcmil range

With an overall length of 3.9 inches and width of 2.19 inches, the connector fits within typical splice enclosures while handling the full 300 to 1000 kcmil range for both run and tap wires. It is intended exclusively for copper-to-copper connections; aluminium or mixed-metal applications are not supported. Installers needing smaller wire sizes or different conductor materials must select an alternative connector.

How it compares

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Price $103.99
Pricier than about 85% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand nameBURNDY
Product typeElectrical Connectors

Questions about this item

Does the copper body need anti-oxidant paste or periodic re-torquing to 1,100 in-lb after installation?

The unplated copper body is designed for copper-to-copper connections; follow the 1,100 in-lb torque spec at install, and re-torque only if the joint sees vibration or thermal cycling per local code.

At the 35 kV rating, will the connector overheat before the insulation fails under continuous 1000 kcmil load?

The connector is rated 35 kV maximum and UL 486 A/B listed for the full 300–1000 kcmil range; thermal limits are governed by the conductor ampacity, not the connector itself.

How hot does the 2.56 in hex nut area get when the joint runs at full 1000 kcmil current all day?

The split-bolt design relies on the copper body to spread heat into the conductors; temperature rise follows the wire’s own ampacity tables rather than a separate connector limit.

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