The invention discloses an intelligent low-
voltage ring main unit. The intelligent low-
voltage ring main unit comprises a cabinet body, power-supply-side isolation knife switches, load-side isolation knife switches, main busbars, auxiliary busbars, a zero
busbar and a
backup source, wherein two groups of power supply-side isolation knife switches and load-side isolation knife switches are installed on the cabinet body, the zero
busbar is installed on the lower part of the cabinet body by virtue of an insulator device, the main busbars are connected onto the power-supply-side isolation knife switches and the load-side isolation knife switches, each auxiliary
busbar is connected with the corresponding main busbar, the upper part of the cabinet body is provided with the
backup source. Since three auxiliary busbars are adopted and an electric connection structure for arranging two groups of main busbars between the two isolation knife switches are adopted, the electric
circuit design of the low-
voltage ring main unit is maximally simplified, the circuit contacts are reduced, the repairing rate is low, the safety is high, the consumption of
copper bars of the ring main unit can be reduced, the consumption of the
copper bars compared with the that of the
copper bars of the traditional low-voltage ring main unit is reduced by 70 percent, the manufacture cost is reduced, and the power supply reliability and economic benefit can be effectively improved.