Blackburn SWD210A1610 SWG XFORM LINK TNCU 2100A 4H 610MM

It is a flexible flat braid link used to carry current between rigid bus or terminal pads, typically in switchgear and transformer connections. The conductor is tin-plated copper in a flat, flexible braid form, and it terminates in a 4-hole pad at each end so it bolts to drilled bus pads rather than being crimped to cable. The flexibility absorbs thermal movement, vibration, and slight misalignment between two rigid connection points.

It is a 2100 A link, called out in the part designation as SWG XFORM LINK TNCU 2100A. Size your link to the bus rating it is bridging; if your bus is rated above 2100 A you need a larger link or multiple links in parallel per the switchgear drawing.

Each. One SWD210A1610 link per order, so for a three-phase set you need three, and for a multi-link-per-phase arrangement multiply accordingly. It is made in the United States.

The item is the braid link itself, a flat tin-plated copper braid with a 4-hole pad termination. Bolts, nuts, Belleville washers, and any joint compound are separate and should match the hole pattern and torque spec on your switchgear or transformer drawing.

Not where the connection has to move. A flexible braid is specified when the two pads shift relative to each other, from thermal expansion of the bus, transformer vibration, or seismic movement, or when the pads are slightly out of alignment. Rigid bar transmits that stress straight into the bolted joint and the bushing. If both pads are fixed, aligned, and in the same rigid structure, bar is fine; otherwise use the braid.

Tin plating on the copper braid slows oxidation at the bolted pad interface, which keeps contact resistance stable over time and makes the link suitable for bolting to aluminum or plated bus without the galvanic problems of bare copper against aluminum. It also means the pads do not need to be brushed back to bright metal as aggressively as bare copper before assembly.