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Thomas & Betts 54101 copper compression lug, yellow barrel, one hole, 10 AWG

Thomas & Betts

Thomas & Betts 54101 compression lug 10 AWG copper 35 kV

SKU CH-4X4W-3KHT8

A 10 AWG copper compression lug rated for 35 kV with electro-tin plating and a single 1/4 in mounting hole

  • TypeStandard Lug
  • Electro-tin plated copper resists corrosion for lasting conductivity
  • CSA certified and UL E9809 listed for code-compliant installations
  • One-hole straight barrel accepts 10 to 14 AWG stranded copper
  • Rated 35 kV AC for high-voltage applications
  • Inspection hole allows visual verification of full conductor insertion

10 AWG copper compression lug

The Thomas & Betts 54101 is a one-hole compression connector for stranded copper wire between 14 AWG and 10 AWG. It suits electricians and panel builders terminating conductors up to 35 kV AC in control panels, switchgear or motor leads. The straight-barrel design accepts a 1/4 in stud and provides a CSA-certified, UL-listed joint.

Thermals noise and power draw

This passive connector has no active cooling, no fan and no power consumption of its own. Heat rise depends entirely on the current carried by the installed conductor and the quality of the crimp. Proper compression with the correct die keeps resistance low and prevents hot spots under continuous load.

Upgrade path and when to switch

It replaces mechanical set-screw lugs or older crimp terminals where vibration resistance and a gas-tight seal are required. The jump is worth it when specifications call for a UL E9809 listed, electro-tin plated copper lug with an inspection hole for visual verification. Builders needing multi-hole patterns or larger barrel sizes must select a different connector.

Highlights

  • Electro-tin plated copper resists corrosion for lasting conductivity
  • CSA certified and UL E9809 listed for code-compliant installations
  • One-hole straight barrel accepts 10 to 14 AWG stranded copper
  • Rated 35 kV AC for high-voltage applications
  • Inspection hole allows visual verification of full conductor insertion

Specifications

BrandThomas & Betts
TypeStandard Lug

Questions about this item

How do I crimp the Thomas & Betts 54101 lug onto a 10 AWG copper conductor without leaving excess strands exposed?

Strip the insulation to match the barrel length, insert the stranded copper fully until it is visible through the inspection hole, then compress with the die indicated by the yellow colour code for a 10 AWG maximum conductor.

What maintenance does the electro-tin plated copper lug require after installation in a 35 kV circuit?

Inspect the barrel and the single 1/4 in stud connection periodically for corrosion, overheating discoloration, or loosening; re-torque the mounting hardware if any movement is detected.

At what point does the 0.5 in tongue width become the limiting factor during continuous 35 kV AC operation?

The narrow tongue concentrates current density, so sustained loading near the 10 AWG ampacity limit will cause the tongue-to-stud interface to heat before the barrel, signalling the practical thermal ceiling.

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