Blackburn STB150A1610 FLEX BRAID TNCU 1500A 2H 610MM

It's a flexible tin-plated copper braid connector rated 1500A, used to make a flexible current-carrying link between two rigid bus bars or between bus and equipment terminals where thermal expansion, vibration, or slight misalignment has to be absorbed. The conductor is flat braid, and it's built to IEEE/ANSI C37.34, the standard covering flexible bus connectors used in switchgear.

Tin plating is what makes that practical. The braid conductor is tin-plated copper, and tin is the plating normally specified on copper hardware landing on aluminum or tin-plated aluminum bus because it limits the galvanic action you would get with bare copper on aluminum. Use the joint compound and bolt torque your bus manufacturer calls for.

Two-hole. Each end pad takes two bolts, which is what NEMA-style bus and equipment pads normally require at this current level because it keeps the pad from rotating under fault forces. If your bus pad is drilled for a single bolt, this is the wrong terminal configuration.

Solid bus transmits every bit of thermal growth, vibration, and misalignment straight into the bolted joint and the equipment terminals. A flexible flat braid like this 1500A assembly takes that movement in the braid instead, which is why it shows up on transformer terminations, breaker connections, and expansion joints in switchgear runs. If the two ends of your connection are rigidly fixed and never move, a solid bar or link is simpler.

It's built to IEEE/ANSI C37.34, the standard for flexible connectors used with switchgear bus, which is the reference most utility and institutional specs cite for this class of part. Country of origin is the United States, which matters if you're working to a domestic-preference procurement spec.

The part number to specify is Blackburn STB150A1610: flexible tin-plated copper braid, 1500A, two-hole pads, 610 mm. If the braid coming out of the panel is a different length or has single-hole pads, it is a different part in the same family, so match length and hole pattern before you order.

Individually. The selling unit is each, so one part number gets you one 610 mm braid assembly. Jobs that need a set at a three-phase termination should order in multiples of three, plus any neutral or ground connection.