The invention provides a plug-in type
bus duct, a plug-in unit, a plug-in type
bus system and an installation tool. The
bus duct comprises a housing and multiple bus units arranged in the housing. A first opening in which the plug-in unit can be inserted is arranged in the bottom of the housing. Each bus unit comprises an insulation
assembly arranged in the housing and a conductive
assembly. A second opening is arranged in the top of each insulation
assembly. Each conductive assembly is arranged in and surrounded by the corresponding insulation assembly. A conductive structure which is in
electric contact with a plug-in head, which is vertically inserted in the corresponding second opening, of a plug-in unit is arranged in a part, facing the corresponding second opening, of the corresponding conductive assembly. The invention also relates to the plug-in unit which is matched with the plug-in type bus duct, the plug-in type bus
system formed by the plug-in type bus duct and the plug-in unit cooperatively, and an auxiliary installation tool. In the plug-in type bus
system, the plug-in unit is in upwards vertical plug-in connection with the bus duct and the plug-in unit is directly hung in the bus duct, so the connection stress is balanced, the
electric contact is firm, and the plug-in bus system is not liable to loose, and high in reliability and safety.