Blackburn ASC 1250 TN ALUMINUM TIN PLATE STRAIGHT SPLICE

It's a compression splice. The ASC 1250 TN is installed with a hydraulic or battery crimp tool and the correct die, not tightened with a set screw or hex key. Once crimped it's permanent, so size the conductor and die before you crimp.

The ASC 1250 TN is an aluminum barrel with a tin plating, which is the standard construction for a dual-rated AL/CU compression splice. The tin plate is what lets the aluminum body sit against copper without galvanic attack. It meets ANSI C119.4, the standard covering connectors for aluminum and copper conductors. If your job spec calls out a specific AL9CU marking, confirm that marking on the connector body before you crimp.

It ships bare. There's no insulation on the connector, so the splice has to be re-insulated in the field with heat shrink, a cold shrink tube, or tape built back to the conductor's insulation level. Budget that material into the job, it isn't included.

Two. It's a straight splice with two conductor ports, one at each end, for joining a run end to end. If you need to tap a branch off a through run or land three or more conductors, this isn't the body for it, you want a tap or multi-port connector.

Plan for an 8 inch connector body plus the bend radius on both cables and whatever re-insulation you're adding over it. In a tight gutter or a shallow meter socket that 8 inches is usually the deciding dimension, measure the cavity before you commit to splicing in place.

Each. One ASC 1250 TN barrel per unit, so a three-phase service splice means ordering three, plus one more for the neutral if you're splicing that too.

Country of origin is the United States. That matters on federally funded and Buy American jobs where connectors count toward domestic content, and it's worth keeping the packaging for the submittal file.