To provide a control system of a breaker capable of preventing effectively an electric fire which may happen after re-transmission of power accompanying power failure restoration in the case of collapse and damage of houses, gas leakage, troubles of wiring and electric facility, and continued use or scattering of electric equipment due to a big earthquake.

The breaker control system 1 is constructed of a breaker 3 which controls power supply status to at least one electric equipment 2 used in a block predetermined in a house and a breaker control means 4 which controls electric conduction status and cut-off status of the breaker 3, and the control means 4 is constructed of an earthquake occurrence detection means 5, a power-failure occurrence detection means 6, and a power supply restart detection means 7 to the breaker after restoration of power failure status.