The systems and methods herein described isolating a circuit breaker panel for a building from a grid circuit during an event disrupting the grid circuit. In one aspect, a interrupt switch system comprises a housing configured to mate with an electric meter socket on a first side and an electric meter on a second side, the housing comprising power inputs from grid power and power outputs to a circuit breaker panel and an interrupt circuit disposed within the housing and configured to interrupt a flow of electricity from the power inputs to the power outputs.