Blackburn SWD160A1635 SWG XFORM LINK TNCU 1600A 4H 635MM

It's a flexible braid switchgear transformer link, used to connect bus or transformer terminations where the joint has to tolerate movement, thermal expansion and vibration instead of a rigid bar. The conductor is flat, flexible, tin-plated copper, and it's built to IEEE/ANSI C37.34, the standard covering high-voltage enclosed switch devices. Each end is drilled 4-hole for bolted pad connection.

It is a 1600 A link, per the SWD160A1635 designation. Match the rating to the switchgear bus it is bridging, and keep the bolted pad joints clean and torqued so the connection does not become the hot spot in the run.

Both ends of the SWD160A1635 are 4-hole drilled pads, so the mating bus or transformer terminal must also be 4-hole drilled on the same pattern. If your gear is 2-hole or single-hole NEMA drilled, this link will not line up and you need the matching 2-hole braid instead.

A rigid bar transmits every bit of thermal growth and vibration straight into the bolted joint and the equipment bushing. The flexible flat braid absorbs that movement, which is why these are used on transformer and switchgear connections and at expansion points. Where the connection is short, static and fully supported, a solid bar is the simpler choice.

The conductor is tin-plated copper. The tin plating slows oxidation on the contact faces and is what makes copper-to-aluminum bolted joints practical, though you still want the correct joint compound and hardware for a dissimilar-metal connection.

Sold each. A three-phase connection needs three links, so order by phase count plus any spares your maintenance stock calls for.

Country of origin is the United States, which is the detail government, utility and institutional buyers working under domestic-content purchasing rules usually need on record.