Fluid-cooled busbar assembly for a track busway system

A track busway system comprising:

• a plurality of sections connected to one another, at least one section of the plurality of sections comprising:
• an elongated enclosure comprising a pair of substantially parallel walls and a mounting bracket positioned between the pair of walls, wherein the enclosure further has an opening opposite the mounting bracket to receive a plug-in unit;
• one or more busbars mounted on at least one wall of the enclosure, each busbar of the one or more busbars configured to receive a corresponding component of the plug-in unit when the plug-in unit is inserted into the enclosure via the opening;
• and
• at least one jacket connected to at least one wall of the enclosure and positioned opposite the one or more busbars, the at least one jacket comprising a passageway for flow of a cooling fluid to dissipate heat from the one or more busbars.