The invention relates to the technical field of junction devices, and discloses a low-voltage two-wire user phasing switch device. The low-voltage two-wire user phasing switch device comprises a bus N-pole terminal, a user N-pole terminal, a DC power supply and three groups of single-phase switching components, wherein each group of single-phase switching components are provided with corresponding switching signal input end, user single-phase access end and bus terminal; the bus N-pole terminal is electrically connected with the user N-pole terminal; and each group of single-phase switching components comprise an electromagnetic relay and a triode. The low-voltage two-wire user phasing switch device is reasonable and compact in structure, and can conduct a coil of the corresponding electromagnetic relay by controlling a signal generator and the corresponding triode through coordination of the triodes and the electromagnetic relays when an asymmetric three-phase current exceeds a critical value, so that the phasing process is finished. The operation is simple, convenient, time-saving and labor-saving; three-phase switching can be quickly achieved; and the problems of high loss and poor voltage quality caused by the asymmetric three-phase current in the operation process are effectively solved.