Do you have a circuit breaker in the circuit?
It is recommended that you use a fuse or circuit breaker, depending on the actual situation.
Of course, there are many problems in practical applications, this is just an example.
the fuse is only Disconnect the phase, while the remaining two phases continue to supply power, resulting in motor phase loss burned.
that your electrical equipment is a three-phase motor, if the line has a phase failure such as ground fault, etc.
