Fuel Cell Vehicle

In an embodiment a system includes a fuel cell, a bus bar having one end portion configured to be electrically connected to the fuel cell, the bus bar being electrically conductive, a terminal block configured to be electrically connected to an opposite end portion of the bus bar, a junction box including a chamber storing a coolant and a tube forming a path to allow the coolant to flow from the chamber to a cover of the terminal block and an insulation protection unit disposed to surround at least a portion of the bus bar to electrically insulate the bus bar from the fuel cell, the insulation protection unit having a flow path to allow the coolant supplied from the cover to flow therethrough.