Pluggable controller assembly and circuit breaker

The invention discloses a pluggable controller assembly and a circuit breaker, and relates to the technical field of switch electrics. The pluggable controller assembly comprises a bottom plate, a shell, a first sleeve and a second sleeve, the first sleeve and the second sleeve are arranged in the shell, a first operation piece is axially connected to the first sleeve in a sliding mode, a second operation piece is axially connected to the second sleeve in a sliding mode, and a locking assembly matched with the first operation piece and the second operation piece is further arranged in the shell. When the first operating piece rotates, the first sleeve is driven to rotate synchronously, so that the first sleeve is clamped with or unclamped from the shell and the bottom plate respectively; and when the second operating piece rotates, the second sleeve is driven to rotate synchronously, so that the second sleeve is clamped with or unclamped from the shell and the bottom plate respectively, and the first operatin