Modularized ring main unit

The invention provides a modular ring main unit, and relates to the technical field of ring main units, the modular ring main unit comprises a bottom plate, a plurality of side plates are symmetrically arranged at the top end of the bottom plate close to the two sides, a back plate is arranged at the top end of the bottom plate close to the back surface, and insertion blocks are fixed at the positions, corresponding to the back plate, of the back surfaces of the side plates; inserting grooves are formed in the positions, corresponding to the inserting blocks, of the inner side wall of the back plate, a top plate is installed at the top ends of the side plate and the back plate, fixing holes are formed in the top ends of the side plate, the back plate and the bottom plate at equal intervals, first threaded holes are formed in the bottoms of the side plate, the back plate and the top plate at equal intervals, and all assemblies can be independently produced; according to the ring main unit, the ring main unit c