Connection busbar and switch cabinet

The embodiment of the utility model provides a connection busbar and a switch cabinet. The connection bus bar comprises a mounting bar which extends in the length direction and is suitable for being coupled to the main bus bar; the power connection bar is arranged on one side of the mounting bar so that the cross section, perpendicular to the length direction, of the connection busbar can be in an L shape, the width of the power connection bar is smaller than that of the mounting bar, and the thickness of the power connection bar is larger than that of the mounting bar; and the chamfering part is positioned between the mounting bar and the power connection bar and is suitable for providing angle and thickness transition between the mounting bar and the power connection bar. Therefore, the space occupation of the connecting busbar in the switch cabinet can be reduced, and the installation of circuit facilities in the switch cabinet is facilitated. Meanwhile, when the connection busbar is installed in the switc