Blackburn SA 300-48 TN Alum Comp Lug 1 hole 300 Tin Plated

The SA 300-48 TN accepts 300 kcmil and 350 kcmil conductor. It's a compression barrel, so the conductor is crimped in with a die-driven tool rather than torqued down like a mechanical set-screw lug. Size the die to the barrel before you crimp.

The SA 300-48 TN is an aluminum-bodied, tin plated compression lug. The tin plating is what makes it dual rated in practice for aluminum or copper conductor and lets it land on a copper or aluminum pad without a bare aluminum-to-copper contact. Anything beyond that, verify against the marking stamped on the barrel.

One hole. The SA 300-48 TN is a single-hole tongue, so it bolts to one landing point and can rotate on the bolt if it isn't snugged properly. If your bus or breaker pad is drilled for NEMA two-hole spacing and your spec calls for two fasteners per termination, you need a two-hole lug instead of this one.

Yes, the SA 300-48 TN is built to ANSI C119.4, the standard covering connectors for aluminum and copper conductors. That's the reference most utility and institutional termination specs cite for compression connectors, so it's usually the line item a submittal reviewer is looking for.

Overall length is 3-21/64 inches, barrel plus tongue. On a 300 or 350 kcmil termination in a crowded gutter or panel, that plus the conductor bending radius is what decides whether the cable lands square on the pad. Measure from the pad face to the nearest sidewall before you commit.

No insulation on it. The SA 300-48 TN ships as a bare tin plated barrel, so if the installation calls for a covered termination you'll be adding heat shrink or a boot separately.

It's a compression fitting, not a mechanical lug, so there's no set screw to torque. You need a hydraulic or battery crimper with the correct die for the barrel and you crimp the number of times the barrel marking calls for. A wrench does nothing here. If your crew doesn't carry a crimper sized for 300 to 350 kcmil, a mechanical set-screw lug is the easier call.

Order it as Blackburn SA 300-48 TN. The SA prefix is the aluminum compression series, 300 is the conductor size in kcmil, and TN designates the tin plated finish. Dropping the TN gets you an unplated version, which is a different part.

Country of origin is the United States, and it's sold each, not in a bag or bulk carton. That matters on two fronts: Buy American or domestic-preference language on public work, and ordering an exact count for a feeder termination instead of buying a box you don't need.