A switch device includes: a resettable switching apparatus, the resettable switching apparatus is configured control an electrical connection between a first electrical feeder of an electrical distribution network and a load; and a controller configured to: cause a test signal to be provided to the first electrical feeder; determine, after a test signal is provided to the first electrical feeder, whether the electrical distribution network has a radial structure; and if the electrical distribution network has a radial structure, open the resettable switching apparatus to disconnect the load from the first electrical feeder of the electrical distribution network. The electrical distribution network receives alternating current (AC) electrical power from at least two independent AC power sources.