The utility model belongs to alternating current low voltage distribution system, in particular to a whole set of low voltage integrated switching device which comprises a tank body. The switching device is characterized in that the tank body is divided into an instrument chamber, an electric energy meter chamber, a power supply inlet wire chamber, a power feeder outlet wire chamber and a reactivecompensation chamber by baffle plates. The utility model overcomes the defects that existing alternating current low voltage distribution switching device uses a plurality of tank bodies, has high cost, and assembles a plurality of parts and apparatus in each tank body. The utility model solves the technical problems of reasonable arrangement of a plurality of functional units, electricity anti-steeling capability, frame stability, integrated heat dispersion and continuous grounding protection and the like. The whole set of low voltage integrated switching device realizes all the low voltagedistribution functions, and has the advantages of low cost and convenient use.