Blackburn FBS1H070A4-12 FLEX BRAID 9/16H 1/4 X 2 X 12 IN

The braid is 12 inches long overall and the catalog description gives it as 9/16 hole with a 1/4 x 2 inch section. The 9/16 inch hole means it takes a 1/2 inch bolt with clearance, which is the common substation and switchgear pad bolting size. Confirm your pads are single-hole drilled on that spacing before ordering, since this is a 1-hole terminal at each end, not a 2-hole NEMA pad.

It's a flat, flexible tin-plated copper braid jumper with a single bolt hole at each pad, used to carry current between two points that move relative to each other or need to stay electrically bonded without a rigid bus link. Typical uses are across switch and disconnect hinges, expansion joints in bus runs, and grounding or bonding jumpers on substation and switchgear equipment. The braid construction lets the connection flex repeatedly instead of fatiguing like solid bar.

No. It is sold as the braid alone, one each, so the bolt, nut, flat washers and Belleville or lock washer for each pad are separate. For aluminum-to-copper or outdoor pad connections you'll also want joint compound. Plan your hardware around the 9/16 inch hole in the braid pads.

Not interchangeably. This is a flat braid, which flexes in one plane and keeps a low profile between closely spaced pads, so it suits switch hinges and bus expansion joints. A round stranded jumper bends in any direction and is what you want where the two terminations are offset or move on more than one axis. Check the drawing: if it calls for flat braid to C37.34, use the braid; if it calls for a cable connector with compression lugs, this is the wrong part.

Order by manufacturer part number FBS1H070A4-12. That number fixes the 1-hole flexible braid style, the 9/16 inch hole, the 1/4 x 2 inch braid section and the 12 inch length, so there is no option to select. Blackburn builds this family in other lengths and hole sizes, so the full suffix is what keeps a replacement identical to what is on the switch.

Tin plating on the copper braid slows oxidation at the bolted pad, which keeps contact resistance stable over time and makes the braid safe to bolt directly to aluminum bus or aluminum pads without the galvanic problem you get with bare copper. On outdoor switchgear and substation work that plating is usually what the spec is after.