The present invention particularly relates to a switch for interrupting the high-voltage large current includes a case surrounding the contact unit defining a current path through the cut-off switch, and a propulsion charge having a gas generator activatable material, the contact unit has a first connection contact and a second connection contact, and inversion region, and separation region, and Sabotto, propulsion charge and the contact unit, the current blocking is supplied through the first connection contact It is configured to be discharged through the second connection contact with, the propulsion instrumentation agent is ignited, by the gas pressure generated by the gas generator activatable material is applied to Sabotto, the Sabotto inversion region while plastically deforming the moves from the starting position in the case the moving direction of the end position, the separation region completely separate, and in the end position of Sabotto, Danro距 between separated end of the separation region It is configured to form. According to the present invention, to reduce the volume for containing the fire extinguishing agent by the inversion of the movement and / or inversion regions Sabotto, thereby, to prevent extinguishing or an electrical arc between the ends of the separation region , the fire extinguishing agent in the chamber separation area through at least one discharge channel is located is injected.