Blackburn SWC130A1304 FLEX BRAID TNCU 1300A 4H 304MM

Four bolt holes per terminal pad, so each end lands on a four-bolt NEMA-style pad pattern rather than a single or two-bolt pad. You need the mating pad on your bus or equipment drilled to the same four-hole pattern. Bolts, nuts, washers and Belleville hardware are not part of the connector and are ordered separately.

It's a flexible braid connector, a flat tin-plated copper braid with a terminal pad at each end, used to carry current between two rigid points that need to move relative to each other, such as switchgear bus to breaker, transformer to bus, or across an expansion joint. The braid absorbs vibration and thermal movement that solid bus bar cannot. It's built to IEEE / ANSI C37, 34 and made in the United States.

The conductor is tin-plated copper. The tin plating slows oxidation on the braid and the pad faces, which matters at a bolted joint because copper oxide raises contact resistance and drives the joint temperature up. It also makes the braid suitable for bolting to aluminum bus without a bare copper-to-aluminum interface.

The braid is built to IEEE / ANSI C37, 34, the standard referenced for high-voltage air switch and connector components, which is what a switchgear or substation spec normally calls out for a flexible connector. If your drawing names a different standard, match the spec sheet to it before release.

Blackburn SWC130A1304. That is the manufacturer part number for the 1300A, four-hole, 304 mm tin-plated copper flexible braid, and there is a single configuration under it, so no suffix or option needs to be specified.

For a joint that has to flex, a braid is the right choice over solid bus, which transmits vibration and can crack at the bolted pad. Against cable with lugs, the flat braid keeps a low profile and mates directly onto a drilled pad, no lug crimping and no bend radius to allow for. Where nothing moves and there's no thermal expansion to absorb, plain bus bar is the simpler and cheaper connection.

Sold each. One braid connector per unit, so a switchgear job needing a braid per phase takes three, or four with a neutral.

Country of origin is the United States, which is what a federal, transit or public utility contract with domestic content language will ask you to document. Keep the part number SWC130A1304 on the submittal so the origin traces back to the specific item.