Single-phase power utilization system and single-phase power distribution three-phase commutation switch thereof

The invention relates to the technical field of power devices, in particular to a single-phase power utilization system and a single-phase power distribution three-phase phase-change switch thereof, the single-phase power utilization system comprises a shell, a first connecting rod, and a first loop, a second loop and a third loop which are arranged in the shell, and the first connecting rod rotates to enable at most one of the first loop, the second loop and the third loop to be communicated. When in use, the first input assembly, the second input assembly and the third input assembly are respectively combined with the A phase, the B phase and the C phase of three-phase power, the electric equipment is connected with the first connecting part, and according to the actual load condition of the three-phase power, for example, when the A phase is greater than the B phase and the C phase is greater than the C phase, the electric equipment is connected with the second connecting part. The first connecting rod is