BUS BAR COVER, AND BUS BAR WITH COVER

An insulating bus bar cover 5 is attachable to a bus bar 21 between cell groups 3B and 3C, both ends 23A and 23B of the bus bar 21 being respectively fixable to electrode terminals 32A and 32B having opposite polarities in order to electrically connect the electrode terminals 32A and 32B. The bus bar cover 5 includes a main body portion 51 for covering the bus bar 21 while exposing both ends 23A and 23B of the bus bar 21, hinge portions 52A and 52B that are provided at ends of the main body portion 51, and lid portions 53A and 53B that are attached via the hinge portions 52A and 52B to the main body portion 51, and are pivotable by the hinge portions 52A and 52B so as to cover or expose the ends 23A and 23B.