Onboard cutoff device

An onboard cutoff device used in an in-vehicle system including a generator, a battery, a first load including an important load, a second load having an importance level lower than an importance level of the important load, a first conductive path provided between the generator and the battery, a second conductive path provided closer to the generator than the first conductive path, a third conductive path provided closer to the battery than the first conductive path, a fourth conductive path provided between the first conductive path and the first load, and a fifth conductive path provided between the second conductive path and the second load, the onboard cutoff device comprising:

• a first cutoff unit that is provided between the first conductive path and the second conductive path, and is switched from a first allowable state in which a flow of a current between the first conductive path side and the second conductive path side is allowed to a first cutoff state in which at least a flow of a current from the first conductive path side to the second conductive path side is cut off;
• a second cutoff unit that is provided between the first conductive path and the third conductive path and is switched from a second allowable state in which a flow of a current between the first conductive path side and the third conductive path side is allowed to a second cutoff state in which at least a flow of a current from the first conductive path side to the third conductive path side is cut off;
• and
• a control unit that maintains the first cutoff unit in the first allowable state and maintains the second cutoff unit in the second allowable state during traveling and parking of a vehicle.