Blackburn LTL300A1457 FLEX BRAID 4 HOLES 457MM 3000AMP

It's a large transformer link connector, a flat flexible tin-plated copper braid used to bond between transformer bushings, bus bars, or switchgear terminations where the two ends need to move or tolerate misalignment. Rigid bus links transmit vibration and thermal expansion stress into the terminal; a flexible braid absorbs it. It's rated 3000 amps and sold each.

Four holes per terminal pad. That's a NEMA four-hole pattern, the standard drilling on large transformer and switchgear terminal pads at this current class, so it lands on a four-hole flag or bushing pad without adapters. If your equipment pad is drilled two-hole, this link won't line up.

Tin plating over the copper braid keeps the contact surface from oxidizing, which matters on a bolted joint carrying 3000 amps where a film of copper oxide raises resistance and runs the connection hot. Tin is also the safer choice where the mating pad is aluminum, since it keeps bare copper off the aluminum face.

Country of origin is the United States, which is what a federally funded or utility Buy American submittal needs on the line item. The part number to list is LTL300A1457.

That's exactly the case for it. Use a flexible braid where there's vibration, thermal growth, or a bushing that won't line up perfectly with the bus, since the flat flexible conductor takes the movement instead of loading the terminal. Use rigid bar only where both ends are fixed, aligned, and mechanically supported. The Blackburn LTL300A1457 covers a 457 mm span at 3000 amps with four-hole pads on the ends.

The link is sold as a single braid assembly, one each. Bolting hardware for the four-hole pads, silicon bronze or stainless bolts, flat washers, Belleville washers, and any joint compound your spec calls for, is ordered separately and sized to your equipment pad drilling.