Blackburn FBS2H110A1-18 FLEX BRAID 2 9/16H 3/8X1-1/2X 18 IN

The braid is 18 inches long overall. The pads are drilled for 3/8 inch bolts on 1-1/2 inch centers, two holes per pad. The 2-9/16 dimension in the description is the pad height. Lay out your bus drilling to 1-1/2 inch center-to-center with 3/8 inch hardware before you order, since the pads are factory drilled and not field-adjustable.

The FBS2H110A1-18 is built to CEI 60694 and IEEE/ANSI C37.34-1994, which is the standard for high-voltage air switches. That is the citation a utility or substation spec engineer is usually looking for on a flexible braid shunt.

It's a flat, flexible tin-plated copper braid jumper with a two-hole pad at each end, used to carry current across a joint that has to move or flex, such as substation switchgear connections, disconnect switch jumpers, bus expansion joints, and grounding or bonding runs between rigid bus and equipment. The braid construction lets the connection absorb vibration and thermal movement without stressing the bus or the pads.

It's sold as a bare braid assembly, one each, with the two-hole pads already attached. Bolts, nuts, Belleville washers, and any flat washers for the 3/8 inch holes are ordered separately, along with joint compound if your spec calls for it on aluminum bus.

A flat braid gives you a much larger surface area for the same cross section, so it dissipates heat better and bends more easily in one plane, which is what you want on a switch blade or an expansion joint that cycles. A round flexible cable jumper bends in any direction and routes around obstructions more easily, but it is stiffer in the plane you actually need movement in and needs lugs crimped on. The FBS2H110A1-18 comes with bolt-ready two-hole pads at both ends, so there is no field crimping.

Tin plating over the copper is what makes this acceptable against aluminum. Bare copper on aluminum sets up galvanic corrosion at the joint; the tin surface is the standard mitigation, which is why substation braids are specified plated. Prep the aluminum bus and use joint compound per your spec, and torque the 3/8 inch hardware to the bus manufacturer's value.

Order Blackburn FBS2H110A1-18. That single part number covers the 18 inch braid with 2-9/16 pad height and 3/8 inch holes on 1-1/2 inch centers, and it is sold one each. There are no finish or length options to specify on it; a different length means a different part number.

Country of origin is the United States, which is the answer most government, utility, and federally funded projects need on the submittal.