An electric cut-off safety device for the power circuits of an electric bipolar vehicle is capable of cutting off two poles. An electric vehicle can include such an electric cut-off safety device.

An electronic component unit includes an accommodation member, electronic components, and a bus bar including a rectangular unit. The accommodation member accommodates the electronic components and the bus bar in an accommodation space portion of an inner space portion. The accommodation member has a dividing wall that forms divided space portions by dividing the accommodation space portion. The dividing wall is provided with a slit that communicates the adjacent divided space portions. The rectangular unit of the bus bar is exposed to the inside of each of the divided space portions, when the rectangular unit is held by being inserted into the slit. The electronic components that are individually accommodated in the respective divided space portions are connected to the rectangular unit being exposed.

An electronic component unit includes an accommodation member, electronic components, and a bus bar including a rectangular unit. The accommodation member accommodates the electronic components and the bus bar in an accommodation space portion of an inner space portion. The accommodation member has a dividing wall that forms divided space portions by dividing the accommodation space portion. The dividing wall is provided with a slit that communicates the adjacent divided space portions. The rectangular unit of the bus bar is exposed to the inside of each of the divided space portions, when the rectangular unit is held by being inserted into the slit. The electronic components that are individually accommodated in the respective divided space portions are connected to the rectangular unit being exposed.