Electric switchgear with modular structure form

The utility model relates to an electric switchgear with modular structure form particularly relates to an electric switchgear, and especially motor protection switch has switch contact subassembly, thermal overload release and magnetism release, covering, executive component, is used for the hookup to input the binding post of conductor and output conductor, and wherein switchgear has the modular structure, has: lower parts, this time parts are including the switch contact subassembly that has at least one utmost point chamber, middleware, this middleware include binding post and magnetism release and thermal overload release, switch lock sub -assembly, this switch lock sub -assembly are fixed in middleware department and are load executive component, and covering hood, wherein, being provided with the dropout sub -assembly, the sub -assembly of should threading off has the sub -assembly support, and magnetism release, thermal overload release, fixed contact carrier and binding post contact track are fixed in sub -assembly support department to the complete sub -assembly in stable, prefabricated inserted switchgear's the casing is constructed into to the dropout sub -assembly.