Hey @tward1,

It is defintely possible for it to burn out or start failing, however this is usually waaay down the line and normally only happens when you are using a switch near its operating capacity all the time. Since it was at 100%, I would check to see how much power your lights and fixtures are consuming, and potentially usign the device at a lower percentage if you are near the capacity.

For the previous switch, did you try to factory reset the switch? It sounds more as though the device may have had an error and failed, which may have been cleared with a factory reset or update.