Three-phase four-wire patch board

The invention discloses a three-phase four-wire patch board. The patch board comprises a plug, a shell, a first three-phase four-wire socket and a second three-phase four-wire socket. The first three-phase four-wire socket and the second three-phase four-wire socket are installed on the shell. Four jacks of the first three-phase four-wire socket are sequentially connected to a power supply phase sequence L1 wire, a L2 wire, a L3 wire and a N wire. The second three-phase four-wire socket is sequentially connected to a power supply phase sequence L3 wire, a L2 wire, a L1 wire and a N wire. When a motor plug is installed on the first three-phase four-wire socket or the second three-phase four-wire socket, forward rotation and reverse rotation of motor can be realized respectively. In the three-phase four-wire patch board provided in the invention, because positions which are the same positions on the first three-phase four-wire socket and the second three-phase four-wire socket and are used for connecting the L1 wire and the L3 wire are opposite, the motor plug is inserted into the first three-phase four-wire socket or the second three-phase four-wire socket so as to realize a forward rotation or reverse rotation need of the motor; and versatility of the three-phase four-wire patch board is increased.