An arrangement for controllably disconnecting a utility power service from a load includes a utility meter housing, a switch and a processing circuit. The utility meter housing includes metrology circuitry configured to generate metering information regarding electrical power provided to the load. The switch is configured to controllably interrupt a connection between the utility power service and the load. The switch has an open state and a closed state. The processing circuit is configured to determine whether a line voltage varies from an expected value by more than a predetermined amount over a predetermined amount of time. The processing circuit is further configured to cause a change in state of the switch based on the determination.