I read the download on that E350 meter and it did say there were internal 200A, motor driven, cam action disconnects which would turn off the power. So probably a mechanical operation.
Again while it sounds like there is a set of contacts that would open the circuit I would think they are similar to a solid state relay that you find in places that can handle multiple operations and not worry about arcing or flash over when being opened under load.
Again while it sounds like there is a set of contacts that would open the circuit I would think they are similar to a solid state relay that you find in places that can handle multiple operations and not worry about arcing or flash over when being opened under load.
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