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Copper terminal block with three hex-head connectors on a flat tongue

Burndy

Burndy Three Conductor Terminal 400 kcmil

SKU CH-3CYY-8XA6B

Three-conductor copper terminal accepting 400–500 kcmil stranded wire, rated 600 V and 194 °F with 1/2 in stud holes on 1.75 in spacing

  • TypeCommercial
  • Three-conductor terminal handles 400–500 kcmil stranded copper
  • Rated for 600 V and 194 °F maximum operating temperature
  • Four-hole mounting pattern with 1.75 in spacing and 0.56 in diameter
  • Hex-head design on 0.38 in thick copper tongue for secure torque
  • 13 in tongue length by 3 in width fits standard stud layouts

Three-Conductor Terminal for Copper

The Burndy terminal connects three stranded copper conductors ranging from 400 kcmil to 500 kcmil in commercial electrical installations. Its copper body and hex-head design provide a secure mechanical connection for heavy-duty power distribution.

Thermal and Electrical Ratings

Rated for a maximum operating temperature of 194 Degrees F and a maximum voltage of 600 V, the connector handles continuous load without exceeding thermal limits. The solid copper construction maintains consistent conductivity across all three terminations.

Upgrade From Smaller Lugs

This terminal replaces single or dual-hole lugs when a three-conductor, four-hole pattern with 1.75 in spacing is required. The jump is justified when the stud size is 1/2 in and the tongue dimensions of 3.13 in length by 3 in width match the busbar layout.

Highlights

  • Three-conductor terminal handles 400–500 kcmil stranded copper
  • Rated for 600 V and 194 °F maximum operating temperature
  • Four-hole mounting pattern with 1.75 in spacing and 0.56 in diameter
  • Hex-head design on 0.38 in thick copper tongue for secure torque
  • 13 in tongue length by 3 in width fits standard stud layouts

Specifications

BrandBurndy
TypeCommercial

Questions about this item

How do I install the 400 kcmil three-conductor terminal and what is the common torque mistake?

Use a hex driver on the hex head bolts to secure each of the three conductors into the copper body; the step often missed is tightening all four holes evenly to the manufacturer-specified torque so the 1.75 in spacing maintains uniform pressure.

What maintenance or replacement will this terminal need over time?

Inspect the copper body and hex head bolts periodically for oxidation or loosening caused by thermal cycling up to 194 °F; re-torque the four bolts if any conductor shows movement, and replace the terminal if the .38 in tongue thickness shows erosion or cracking.

What is the first limit reached under sustained heavy load?

The 194 °F maximum operating temperature is the limiting factor; continuous current that pushes the connector above this temperature degrades the copper body and bolt integrity before the 600 V voltage rating becomes a concern.

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