Elevator phase sequence switching device and control circuit thereof

The elevator phase sequence switching device comprises an input end L1, an input end L2, an input end L3, an output end R1, an output end S1 and an output end T1, the input end L1, the input end L2 and the input end L3 are respectively connected with a three-phase power supply, the output end R1, the output end S1 and the output end T1 are respectively connected with a phase sequence protector, and the input end L1, the input end L2 and the input end L3 correspond to the output end R1, the output end S1 and the output end T1 in a one-to-one mode. The elevator phase sequence switching control circuit further comprises a first phase-loss switch, a second phase-loss switch, a third phase-loss switch, a first phase-dislocation switch, a second phase-dislocation switch and a third phase-dislocation switch. According to the utility model, an inspector can simulate six wiring conditions of phase failure and phase dislocation by controlling the closing states of the first phase failure switch, the second phase failur