Blackburn FBS2H110A1-27 2H JMPRBRD ASY4 1100 H9/16 F3.5 L27

It's a flexible grounding jumper braid assembly, part number FBS2H110A1-27, made by Blackburn. Braided bonding jumpers like this are used to carry ground continuity across a joint that moves or flexes, such as expansion joints in busway and cable tray runs, transformer and motor connections, or equipment that vibrates, where a solid conductor would fatigue and break. It's sold individually, one assembly per order.

The braid assembly measures 27 inches (685.8 mm) in length, which is also what the -27 suffix in the part number refers to. Measure the span you need to bridge plus enough slack for the movement at the joint before you settle on that length; a braid pulled taut defeats the point of using a flexible jumper.

No. It's a bare, uninsulated braid assembly, so treat it as an exposed conductor and keep it clear of live parts and sharp edges where it crosses the joint.

It's built to NEMA standards, and it's manufactured in the United States, which covers the domestic-origin requirement common on government, institutional, and utility specifications.

The FBS2H110A1-27 is supplied as a complete assembly, meaning the braid comes with its terminal ends already attached, so you aren't crimping lugs in the field. Bolts, nuts, and washers to land those terminals on your equipment are not part of the assembly, so plan on supplying the mounting hardware sized to the terminal hole and the tapped or drilled connection point on your gear.

Use the braid where the connection moves. Across busway expansion joints, cable tray splices with thermal movement, vibrating motors, generators, and transformers, a braided jumper flexes without work-hardening and cracking the way a solid bar or a single stiff conductor will. For a static bond, say tray section to tray section that never moves, a solid bonding jumper or a grounding bushing and conductor is the simpler and cheaper choice. This Blackburn assembly is the flexible-braid type.

It's a single fixed configuration, model FBS2H110A1-27, with no finish, length, or terminal options to select at order time. The length is fixed at 27 inches, so if your joint needs a different span you need a different Blackburn FBS part number rather than an option on this one.