Blackburn SA 445-48 ALUM COMPR LUG 1H 2/0 1/2 INCH STUD

The SA 445-48 takes 2/0 AWG stranded or compressed conductor, and 3/0 AWG compressed or solid conductor. It is a one hole compression lug, so the barrel is crimped onto the conductor with a die tool rather than tightened with a set screw. Running a smaller conductor than the rated range will not crimp reliably, so match the conductor to the rating.

Yes, the SA 445-48 is built for a 1/2 inch stud, with a single bolt hole in the pad. The pad itself measures 1.344 inch long by 1.160 inch wide, so check that your busbar or equipment landing pad has that much clear surface, especially where lugs are landed side by side.

It is built to ANSI C119.4, the standard covering connectors for aluminum and copper conductors. That is the reference a specifier or inspector will normally want cited on a compression termination. The lug is also made in the United States, which matters on Buy American and federally funded work.

The SA 445-48 is an aluminum body lug. Aluminum bodied compression lugs of this type are commonly dual rated AL9CU, but that rating is not something to assume, so if you are terminating copper, confirm the AL9CU marking stamped on the barrel before you crimp. The lug is supplied bare with no insulation, so the connection needs to be taped, insulated or enclosed per the installation.

A compression lug like the SA 445-48 is crimped permanently with a hydraulic or battery tool and the correct die, so there is no torque to re-check and nothing to loosen over thermal cycling. A mechanical set screw lug installs with a torque wrench and no crimper, and can be taken apart later. If you do not own a crimper and dies for 2/0, the mechanical type is the practical choice; for a permanent service or feeder termination that will not be disturbed, compression is what most specs call for.

The SA 445-48 is the lug body only. Mounting hardware for the 1/2 inch stud is not part of it, so order the bolt, nut, flat and Belleville washers separately to suit the landing. Most aluminum compression lugs of this type are factory filled with oxide inhibitor in the barrel, but nothing in the product data confirms that for this one, so plan on having a tube of joint compound on hand for the aluminum to aluminum contact surface.

It is sold each, so quantity is counted per lug, not per bag or box. On a three phase feeder plus neutral you would count four, plus whatever spares you want on the truck.