POWER DISTRIBUTION DEVICE

There is provided a power distribution device: a first and second power distribution devices. The first power distribution device includes: a first cutoff unit; and a first control unit that controls the first cutoff unit based on a first cutoff characteristic. The second power distribution device includes: a second cutoff unit; and a second control unit that controls the second cutoff unit based on a second cutoff characteristic. The first cutoff characteristic and the second cutoff characteristic are initially set such that the first cutoff time is longer than the second cutoff time. The first control unit executes a cutoff characteristic change process of changing the first cutoff characteristic such that the first cutoff time is longer than the second cutoff time when the in-vehicle device is changed or added and the second cutoff characteristic is changed and the first cutoff time is shorter than the second cutoff time.