Blackburn FBS4H235A1-30 FLEX BRAID 4 9/16H 1/2 X 3 X 30 IN

Four. It is a 4-hole flexible braid connector, so each terminal pad is drilled for a four-bolt pattern rather than one or two bolts. Match the pad drilling to the hole pattern on your switch or bus terminal before you order, since a 4-hole pad will not land on a two-hole terminal.

30 inches. That is the overall cable length, and the catalog designation reads 1/2 x 3 x 30 in for the braid section. Take the 30 inches as the installed reach between pads, so allow for the slack loop you want rather than pulling it straight and tight.

It's a flexible braid shunt connector, flat in shape and built from tin-plated copper, used to carry current between two bolted terminal pads while still allowing movement. Typical duty is switchgear, disconnect switches, bus connections, transformer terminations and ground-grid jumpers where a rigid bar cannot absorb thermal expansion, vibration or mechanical travel. It is built to CEI60694 and IEEE/ANSI C37.34-1994.

The conductor is tin-plated copper. The tin plating is what lets it bolt to aluminum pads without the bare copper to aluminum contact that drives galvanic corrosion, and it holds up better than bare copper in damp or outdoor switchgear. Still use the joint compound and torque the utility or manufacturer specifies for the pad.

CEI60694 and IEEE/ANSI C37.34-1994. C37.34 is the test code for high voltage air switches, which is the usual reference when a utility or spec engineer calls out a shunt or flexible connector for switch duty, so it answers the line item on most switchgear submittals.

Use the braid wherever the two ends move relative to each other. A flat flexible braid absorbs thermal growth in a bus run, vibration from a breaker or transformer, and the travel of a switch blade, all of which fatigue and crack a rigid bar or loosen its bolted joints. Where both pads are fixed and there is no expansion to take up, a solid bar or bolted bus link is the simpler choice. The FBS4H235A1-30 is the flexible option, flat in profile so it fits the same bolted pad face as a bar.

Order it as Blackburn FBS4H235A1-30. That is the manufacturer part number for the 4-hole flexible braid at 30 inches, described as 1/2 x 3 x 30 in. The suffix carries the length, so the number itself is what pins down the 30 inch version against the shorter braids in the family.

Sold each, one connector per unit, so a two-pad jumper on both phases means ordering one per run. It is manufactured in the United States, which covers the domestic-content line that shows up on most government, utility and institutional purchase orders.