Power distribution module allowing maintenance without power interruption, and power distribution system

A power distribution module, comprising a cabinet and a mains horizontal busbar unit, a distribution busbar unit, an input switch unit, an input connection unit, an output connection unit, an output switch unit, an output horizontal busbar unit and a UPS unit which are installed in the cabinet, wherein

• the cabinet comprises a rack and an isolation housing for insulation isolation assembled on the rack;
• an output terminal of the mains horizontal busbar unit is connected to an input terminal of the distribution busbar unit, an output terminal of the distribution busbar unit is connected to an input terminal of the input switch unit, an output terminal of the input switch unit is connected to an input terminal of the input connection unit, an output terminal of the input connection unit is connected to an input terminal of the UPS unit, an input terminal of the output connection unit is connected to an output terminal of the UPS unit, an output terminal of the output connection unit is connected to an input terminal of the output switch unit, an output terminal of the output switch unit is connected to an input terminal of the output horizontal busbar unit, and the input switch unit and the output switch unit are capable of controlling power-on and power-off of the power distribution module;
• and
• wherein the isolation housing is provided around the mains horizontal busbar unit, around the distribution busbar unit, around the input switch unit, around the output switch unit and around the output horizontal busbar unit, for isolating the mains horizontal busbar unit, the distribution busbar unit, the input switch unit, the output switch unit and the output horizontal busbar unit individually from each other.