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Gray angled copper compression lug with inspection hole

Thomas & Betts

Thomas & Betts 54106UB Wire Cap Connector 4 AWG 1/4 in Stud Gray

SKU CH-5SE1-EJQVY

Connects 4 AWG copper wire to a 1/4 inch stud with a 90-degree angled barrel and inspection hole

  • Color MappingGray
  • TypeElectrical Connectors
  • CSA certified and UL listed for code compliance
  • 35 kV rating handles high-voltage applications
  • 90-degree angled barrel simplifies tight-space routing
  • 194 °F max temperature withstands demanding environments
  • Inspection hole allows quick visual verification

4 AWG Copper Compression Lug

The ABB 54106UB is a one-hole compression lug built for stranded copper conductors up to 4 AWG. Its gray color code matches die code 29 for quick identification during installation. The 90-degree angled barrel and 1/4-inch stud hole suit panel and bus-bar terminations where straight entry is impractical. An inspection hole lets the installer verify full conductor insertion before crimping.

Sustained Load Performance

Rated for continuous operation at 194 degrees F and a maximum voltage of 35 kV, the lug maintains electrical integrity under long-term thermal cycling. The solid copper barrel resists creep and stress relaxation better than plated alternatives, keeping contact resistance stable over years of service. CSA certification and UL file E9809 confirm compliance with North American safety standards for power distribution equipment.

Thermal and Power Characteristics

Copper construction provides low resistive heating at rated current, so the connector runs cooler than the 194-degree limit in normal use. The standard barrel outside diameter of .359 in and tongue width of .09 in distribute clamping force evenly across the crimp joint. No moving parts or active cooling are involved, so the installation adds zero acoustic noise to the enclosure.

Highlights

  • CSA certified and UL listed for code compliance
  • 35 kV rating handles high-voltage applications
  • 90-degree angled barrel simplifies tight-space routing
  • 194 °F max temperature withstands demanding environments
  • Inspection hole allows quick visual verification

Specifications

BrandABB
Color MappingGray
TypeElectrical Connectors

Questions about this item

How much heat can the 54106UB lug handle when current runs through it all day?

The copper body is rated for a maximum operating temperature of 194 degrees F, so it stays within spec under continuous load.

What size crimping die do I need to install this connector?

The lug carries die code 29, which matches the standard tool setting for 4 AWG copper compression lugs.

Will the 1/4 inch stud hole line up with the terminal blocks on my existing panel?

The single hole is centred for a 1/4 inch stud and the tongue is angled 90 degrees, so it fits standard bus-bar patterns that use that hardware.

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