Instantaneous separation mechanism and switch device

The invention discloses an instantaneous separation mechanism and a switch device. An existing switch device is too long in contact time during separation operation, and the service life of the existing switch device is shortened. An operating handle is fixed with the top of a main brake insulating bracket; the middle of a main brake is fixed with the bottom of the main brake insulating bracket; a limiting mechanism is fixedly arranged on the main brake; an auxiliary brake is hinged with the main brake; the bottom of the auxiliary brake is limited by a limiting mechanism; the auxiliary brake is provided with an integrally-formed arc plate, and the position, close to the top of the auxiliary brake, of the arc plate is connected with the main brake insulating bracket through a force storage mechanism. The end face of the end, close to the arc plate, of the main brake is a first arc face, the first arc face is opposite to a second arc face on the inner side of the arc plate, and a gap is formed between the first