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Aluminium mechanical lug, silver finish, single hole, socket head

Thomas & Betts

Thomas & Betts Blackburn ADR25 Mechanical Connector Lug 250 kcmil to 6 AWG

SKU CH-MKP0-APD4K

Aluminium mechanical lug accepts 6 AWG to 250 kcmil copper or aluminium conductors, rated 1 000 V and 194 °F

  • Length1.050
  • MaterialAluminum
  • Type250KCMIL-6STR TRMINL LUG
  • Aluminum body resists corrosion for long service life
  • Accepts 6 AWG to 250 kcmil conductors for flexible wiring
  • Rated 1000 V and 194 °F for demanding circuits
  • Single 5/16 in stud hole simplifies mounting
  • Compact 1.050 in length fits tight enclosures

Mechanical connector lug for 250 kcmil to 6 AWG

This Thomas & Betts Blackburn ADR25 mechanical connector lug accepts stranded copper or aluminum conductors from 6 AWG up to 250 kcmil. It provides a single-hole termination for power distribution panels, motor leads or service entrance cables. The socket-style head allows torque-controlled installation with standard hand or hydraulic tools. It is suited for electricians and maintenance crews who need a reliable single-conductor lug rated for 1,000 V.

Aluminum body with 5/16 in stud hole and socket head

The lug body is machined from aluminum and measures 1.050 in overall length with a 1 in by 1 in tongue that is 0.25 in thick. A single 0.31 in diameter hole fits a 5/16 in stud, and the socket head style means the installer drives the set screw directly without a separate bolt head. One conductor and one termination per lug keep the connection simple and inspectable in cable trays, switchgear or transformer vaults.

Rated 194 °F maximum operating temperature

Aluminum construction dissipates heat from the conductor interface while the mechanical set-screw clamp maintains contact pressure through thermal cycling. The single-hole mounting avoids uneven loading that can loosen multi-hole patterns under vibration. Normal operation stays within the 194 °F limit, so no derating is required for standard indoor or sheltered outdoor runs at the rated voltage.

Highlights

  • Aluminum body resists corrosion for long service life
  • Accepts 6 AWG to 250 kcmil conductors for flexible wiring
  • Rated 1000 V and 194 °F for demanding circuits
  • Single 5/16 in stud hole simplifies mounting
  • Compact 1.050 in length fits tight enclosures

Specifications

BrandThomas & Betts
Length1.050
MaterialAluminum
Type250KCMIL-6STR TRMINL LUG

Questions about this item

What wire sizes does the ADR25 lug accept for aluminum and copper conductors?

The lug accepts stranded aluminum or copper conductors ranging from 6 AWG up to 250 kcmil, with a single conductor per termination.

What stud size and hole diameter does the ADR25 lug require for mounting?

The lug is designed for a 5/16 inch stud and features a single mounting hole with a 0.31 inch diameter.

How is the conductor secured inside the ADR25 lug, and what tool is needed?

The conductor is secured by a mechanical set-screw mechanism using a socket-head screw; the socket head style requires the correct hex key or driver to achieve proper torque.

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