Enhanced flashover eliminating device of circuit breaker

The invention discloses a circuit breaker reinforced flashover eliminating device, which comprises a terminal cover and an insulating support bottom plate arranged at the bottom of a circuit breaker body and the terminal cover, and is characterized in that the insulating support bottom plate comprises a plurality of limiting grooves and a plurality of mounting columns arranged in the plurality of limiting grooves; a plurality of partition plates of the terminal cover are provided with a plurality of mounting guide holes sleeved on a plurality of mounting columns, and fixing pieces penetrate into the mounting guide holes to be fixedly connected with the mounting columns, so that the mounting reliability between the insulating support bottom plate and the terminal cover is improved through the mounting design; according to the circuit breaker, the withstand voltage strength and the mechanical strength of the terminal cover under the conditions of instant breaking of large current and atmospheric pressure are im