A switching device for LV electric installations comprising: - one or more electric poles, each electric pole comprising one or more mobile contacts and one or more fixed contacts adapted to be coupled or uncoupled; - a mobile contact assembly comprising said mobile contacts and reversibly movable between a first contact position, at which said movable contacts and said fixed contacts are coupled, and a second contact position, at which said movable contacts and said fixed contacts are uncoupled; - a mechanical control assembly for operating said mobile contact assembly, said mechanical control assembly comprising: - a control mechanism for reversibly moving said mobile contact assembly between said first and second contact positions (C1, C2); - a trip mechanism operatively coupled with said control mechanism, said trip mechanism comprising a trip shaft reversibly movable between a first trip position and a second trip position, said control mechanism being adapted to move said mobile contact assembly from said first contact position to said second contact position in response to a movement of said trip shaft from said first trip position to said second trip position; - a handle mechanism operatively coupled with said control mechanism, said handle mechanism comprising a handle adapted to be reversibly moved by a user or an outer actuator between a first handle position and a second handle position, said control mechanism being adapted to move said mobile contact assembly from said first contact position to said second contact position in response to a movement of said handle from said first handle position to said second handle position and to move said mobile contact assembly from said second contact position to said first contact position in response to a movement of said handle from said second handle position to said first handle position; characterised in that said mechanical control assembly comprises an activation mechanism adapted to operatively couple said handle mechanism with said trip mechanism to actuate said trip shaft during an opening manoeuvre of said switching device, said activation mechanism being adapted to move said trip shaft from said first trip position to said second trip position in response to a movement of said handle from said first handle position towards said second handle position upon an actuation by a user or an outer actuator. - one or more electric poles, each electric pole comprising one or more mobile contacts and one or more fixed contacts adapted to be coupled or uncoupled; - a mobile contact assembly comprising said mobile contacts and reversibly movable between a first contact position, at which said movable contacts and said fixed contacts are coupled, and a second contact position, at which said movable contacts and said fixed contacts are uncoupled; - a mechanical control assembly for operating said mobile contact assembly, said mechanical control assembly comprising: - a control mechanism for reversibly moving said mobile contact assembly between said first and second contact positions (C1, C2); - a trip mechanism operatively coupled with said control mechanism, said trip mechanism comprising a trip shaft reversibly movable between a first trip position and a second trip position, said control mechanism being adapted to move said mobile contact assembly from said first contact position to said second contact position in response to a movement of said trip shaft from said first trip position to said second trip position; - a handle mechanism operatively coupled with said control mechanism, said handle mechanism comprising a handle adapted to be reversibly moved by a user or an outer actuator between a first handle position and a second handle position, said control mechanism being adapted to move said mobile contact assembly from said first contact position to said second contact position in response to a movement of said handle from said first handle position to said second handle position and to move said mobile contact assembly from said second contact position to said first contact position in response to a movement of said handle from said second handle position to said first handle position; - a control mechanism for reversibly moving said mobile contact assembly between said first and second contact positions (C1, C2); - a trip mechanism operatively coupled with said control mechanism, said trip mechanism comprising a trip shaft reversibly movable between a first trip position and a second trip position, said control mechanism being adapted to move said mobile contact assembly from said first contact position to said second contact position in response to a movement of said trip shaft from said first trip position to said second trip position; - a handle mechanism operatively coupled with said control mechanism, said handle mechanism comprising a handle adapted to be reversibly moved by a user or an outer actuator between a first handle position and a second handle position, said control mechanism being adapted to move said mobile contact assembly from said first contact position to said second contact position in response to a movement of said handle from said first handle position to said second handle position and to move said mobile contact assembly from said second contact position to said first contact position in response to a movement of said handle from said second handle position to said first handle position;