Circuit breaking device

The circuit breaking device includes: a cooler having a first main surface and a second main surface opposite to each other; a first insulator provided in contact with the first main surface; a charge relay and a first discharge relay disposed in contact with a surface opposite to a surface in contact with the first main surface of the first insulator; a second insulator provided in contact with the second main surface; a protection part disposed in contact with a surface opposite to a surface in contact with the second main surface of the second insulator; a first power storage terminal configured to be connected to a first electrode of the power storage element; and a second power storage terminal configured so as to be connected to the second pole of the power storage element, the charging relay being separated from the discharging relay with a space therebetween. At least a portion of the protection portion faces the space across the first insulator, the cooler, and the second insulator. 断路装置包括：冷却器，具有相互相反