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Copper compression lug, straight barrel, tin finish, one-hole, purple code 54

Thomas & Betts

Thomas & Betts 54167NT 4/0 AWG Copper Compression Lug

SKU CH-P1PC-D98DM

Copper compression lug for 4/0 AWG wire with a single 1/4 in stud hole, 35 kV AC rating, purple colour code and die code 54, CSA certified and UL E9809 listed

  • TypeStandard Narrow Tongue Lug
  • Copper construction for high conductivity
  • Tin-plated finish resists corrosion
  • CSA certified and UL E9809 listed
  • 35 kV AC maximum voltage rating
  • Straight barrel with inspection hole

4/0 AWG Copper Compression Lug

The Thomas & Betts 54167NT is a one-hole compression connector built for 4/0 AWG stranded copper wire. It suits electrical contractors and industrial maintenance teams who need a reliable termination for high-current circuits up to 35 kV AC. The tin-plated copper barrel and purple color code identify the correct die for crimping. UL listing E9809 and CSA certification confirm compliance with North American safety standards.

Upgrading from mechanical lugs

This compression lug replaces bolt-on or set-screw connectors that can loosen under vibration or thermal cycling. The crimped joint provides a permanent, low-resistance connection that maintains integrity in demanding environments. The jump is worth it when the installation must withstand mechanical stress, meet UL or CSA inspection requirements, or operate continuously at medium voltage without hot spots. The straight barrel and standard narrow tongue fit existing one-hole mounting patterns without redesign.

Installation notes

A hydraulic or manual crimp tool fitted with die code 54 is required to compress the barrel correctly. The inspection hole allows visual confirmation that the conductor is fully seated before crimping. Common issues include using an incorrect die size, which produces an incomplete crimp, or insufficient conductor insertion, which leaves a gap at the barrel end. The tin finish resists oxidation, but the connector must be matched to copper wire only; aluminum conductors require a different lug.

Highlights

  • Copper construction for high conductivity
  • Tin-plated finish resists corrosion
  • CSA certified and UL E9809 listed
  • 35 kV AC maximum voltage rating
  • Straight barrel with inspection hole

Specifications

BrandThomas & Betts
TypeStandard Narrow Tongue Lug

Questions about this item

What stud size does the 0.7 in tongue width accept?

The lug is drilled for a 1/4 in stud, so the single hole fits a quarter-inch bolt or screw.

Which compression die should I use for the barrel marked with die code 54?

Use a die stamped 54 that matches the purple colour code; the barrel is sized for 4/0 AWG stranded copper and must be crimped with the correct die to meet UL E9809 and CSA certification.

How often should I inspect the tin-plated barrel after installation?

Check the inspection hole periodically for corrosion or loose strands; the tin finish resists oxidation, but a visual check during routine electrical maintenance is recommended.

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