Yes MOV would trip the circuit breaker, if there is one that will trip before the meter melts down, if you wanted to destroy the meter now you would have to connect it to a voltage source of significantly more than the 1000v it is rated for, and that is gross misuse, you can't hold Fluke responsible for that. I think there is a good chance this meter goes though the EN/IEC 61010 testing without a hitch, working perfectly afterwords, no blown fuses or MOV's, simply withstanding the test voltage is an pretty elegant solution I think.