Blackburn FBS2H150A1-15 FLEX BRAID 2 9/16H 1/2X1-1/2X 15 IN

It is a flexible flat braid jumper made of tin-plated copper, used to carry current between two bolted terminations that need to move or absorb vibration, thermal expansion, or slight misalignment. Typical spots are switchgear, disconnect switches, bus connections, and equipment bonding where a rigid bar would fatigue or transmit stress. It is a 2-hole design, so both pads bolt down at two points each rather than pivoting on a single bolt.

The braid is 15 inches long overall. Plan the run so the braid keeps some slack between the two pads rather than being pulled taut, since the whole point of a flexible connector is to take up movement. If your two bolted points sit further apart than the braid can span with slack, you need a longer length in the same family rather than stretching this one.

It is built to CEI 60694 and IEEE/ANSI C37.34-1994. C37.34 is the test code for high voltage air switches, so this braid is intended for switch and switchgear duty rather than being a general-purpose bonding strap.

The tin plating on this Blackburn flex braid protects the copper strands from oxidation and keeps the contact surfaces at the bolted pads from building resistance over time. That matters in outdoor switch enclosures and damp or industrial atmospheres, and it is also what lets the copper sit against aluminum hardware with less galvanic trouble than bare copper.

The braid is supplied as the connector itself, one each. Hardware to bolt the pads down is sized to the equipment pad and hole pattern you are landing on, so plan on supplying bolts, washers, and Belleville washers separately as your torque spec requires.

Country of origin on the FBS2H150A1-15 is the United States, which is the answer most government, utility, and institutional buyers need for a domestic-content submittal.

Use a rigid bar where both ends are fixed and nothing moves. Use a flat flexible braid like this one wherever the two ends can shift, which includes operating switch blades, equipment that vibrates, long bus runs that grow and shrink with temperature, and joints where the two pads do not line up perfectly. A rigid connection in those spots transfers the stress into the terminations and eventually cracks the joint or the pad.

It sells as each, one braid per unit. If you are jumping both sides of a switch or doing a set of phases, count the number of individual connections and order that many.