Blackburn STB110A1457 FLEX BRAID TNCU 1100A 2H 38.1X457MM

The braid measures 457 mm (18 in) overall, and the model designation also carries the 38.1 mm width. Your usable pad-to-pad span is less than the full 457 mm because the two bolt pads occupy each end and a flexible braid is normally installed with a deliberate bow so it can take thermal movement without stressing the terminations. Measure your actual pad centers before committing to this length.

Yes, it's an 1100 A flexible braid, and that rating is established under IEEE/ANSI C37.34, the standard for high-voltage air disconnect and interrupter switches. Ampacity on braid connectors depends on installation conditions, so confirm the rating basis matches how you're mounting it in the enclosure or outdoor structure.

Each end of the STB110A1457 is a 2-hole pad, so your bus or equipment pad must already be drilled with a matching two-bole pattern on the same spacing. If the pad on your switch is a single-hole (NEMA one-hole) prep, this braid won't land on it without adapting. Hardware is not part of the braid; bolts, flat washers, and Belleville or lock washers are supplied separately and torqued to the equipment manufacturer's value.

It's a flexible flat braid connector used to make a current-carrying connection between two rigid bus or equipment pads that need to move relative to each other, such as switchgear bus, disconnect switches, and substation terminations. The braid is tin-plated copper, flat in shape, and rated to IEEE/ANSI C37.34. Both ends are 2-hole pads, so it bolts flat to drilled bus pads rather than crimping to cable.

It sells each, so one braid per unit. Phase work needs three ordered separately, and if you're replacing a set on a three-phase disconnect you'll want all three so the connections match in length and condition.

Not interchangeably. A flat braid flexes in one plane and bolts directly to pads, which is what makes it work in the tight gap on a disconnect switch blade or between stacked bus bars. A round cable jumper needs terminal lugs, a larger bend radius, and more space. If your application is a long, loose run between distant terminations, cable is the right choice; for a short pad-to-pad movement joint at 1100 A, the braid is.

Order by the full part number STB110A1457. The designation encodes what you're matching: 1100 A rating, 2-hole pads, and 38.1 x 457 mm braid dimensions. Blackburn builds this family in multiple ampacities and lengths, so a braid that is right electrically can still be the wrong length for your pad spacing. Verify ampacity, hole pattern, and pad-to-pad distance together.

Tin plating on the copper braid slows oxidation at the bolted pad interface, which is what keeps contact resistance from creeping up over time, and it lets the braid land on aluminum bus without a bare copper-to-aluminum couple. For outdoor switchgear and substation work that plating is the difference between a joint that holds its resistance and one you're back retorquing.

Country of origin is the United States, which matters if you're buying against a Buy American or domestic-preference clause on a utility, municipal, or federal substation job. Cite it with the IEEE/ANSI C37.34 conformance when you submit it.