ELECTRICAL JUNCTION BOX

An electrical junction box includes a first conductive plate, a second conductive plate adjacent to the first conductive plate without contacting the first conductive plate, a switching element including a first terminal connected to the first conductive plate, a second terminal connected to the second conductive plate, and an element body on which the first terminal and the second terminal. A circuit board opposes and is spaced apart from the second conductive plate. A cover has an open side and covers the switching element and the circuit board. The cover includes a partitioning plate that partitions an inside of the cover so as to form a first chamber. The element body of the switching element is arranged in the first chamber, a second chamber is formed inside the cover by the partitioning plate and the second conductive plate, and the circuit board is arranged in the second chamber.