Low-voltage switchgear cabinet with one/fourth draw-out type function units

The invention relates to a low-voltage switchgear cabinet with one/fourth draw-out type function units. The low-voltage switchgear cabinet comprises a plurality of drawer units which are isolated from one another and are divided by drawer division plates. The low-voltage switchgear cabinet is characterized in that an insulated mounting plate and an interphase insulating barrier which is arranged at the upper end of the insulated mounting plate so as to prevent interphase short circuit of a circuit breaker terminal are arranged outside a circuit breaker of a drawer body; in addition, a fixing part for preventing the circuit breaker from forward sliding is arranged in a first space; a fixing part for preventing the circuit breaker from backward sliding is also arranged in a second space; a secondary plug, an incoming plug and an outgoing plug which are vertically arranged in a staggered manner are arranged on a supporting plate of the drawer body in the first space; a propulsion mechanism and an interlocking me