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Aluminium mechanical lug, dual conductor entry, single half-inch bolt hole, hex socket head

Thomas & Betts

Thomas & Betts Blackburn ADR35-21 Mechanical Lug 350 kcmil 2 Conductor 1/2 in

SKU CH-SJ7A-PC7Z7

Connects two aluminium or copper conductors up to 350 kcmil with a 1/2 in stud hole, rated 1,000 V and 194 °F

  • TypeElectrical Connectors
  • Dual-conductor design simplifies splicing with two termination points
  • Aluminium body handles both copper and aluminium conductors
  • 350 kcmil maximum wire size supports heavy-gauge power cables
  • 1/2 in stud hole fits standard mounting hardware
  • 1,000 V rating covers most low-voltage industrial circuits

Mechanical lug for 350 kcmil conductors

The Blackburn ADR35-21 mechanical lug accepts two aluminium or copper conductors up to 350 kcmil. A single 1/2 in stud hole secures the aluminium body. The hex-socket head simplifies torque application during installation.

Suited for dual-conductor aluminium

Installers terminating two parallel conductors at a single stud will find this lug appropriate. It is not intended for applications requiring more than two conductors or for stud sizes other than 1/2 in.

Hex-socket head eases installation

A standard hex key tightens the set screws onto the conductors. The single-hole tongue aligns with a 0.5 in stud; verify stud spacing of 0.95 in before mounting to avoid misalignment.

Highlights

  • Dual-conductor design simplifies splicing with two termination points
  • Aluminium body handles both copper and aluminium conductors
  • 350 kcmil maximum wire size supports heavy-gauge power cables
  • 1/2 in stud hole fits standard mounting hardware
  • 1,000 V rating covers most low-voltage industrial circuits

Specifications

BrandBLACKBURN
TypeElectrical Connectors

Questions about this item

What conductor sizes can I use with the ADR35-21 mechanical lug?

The lug accepts stranded copper from 6 AWG up to 350 kcmil and also works with aluminum conductors in the same range.

Will the single 1/2 in stud hole match the busbar spacing I already have?

The hole diameter is 0.5 in and the spacing between holes is 0.95 in, so it fits a standard 1/2 in stud pattern.

How do I verify the connection is secure after torquing the hex socket?

Check that both conductors are fully seated, the hex socket is snug, and the lug body shows no visible deformation at the 1.75 in tongue length.

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