| 摘要 |
The invention relates to an electrical interruption switch, in particular for interrupting high currents at high voltages, having a casing which surrounds a contact unit which defines the path of the current through the interruption switch, and having a propellant charge comprising a gas-generating activatable material, wherein the contact unit comprises a first and a second connection contacts, an upsetting region, a separation region and a sabot, the propellant charge and the contact unit are designed in such a way that a current to be interrupted can be supplied thereto via the first connection contact and discharged therefrom via the second connection contact, and a gas pressure produced by the gas-generating activatable material is applied to the sabot when the propellant charge is ignited, in such a way that the sabot is moved in the casing in a direction of movement from a starting position to an end position, plastically deforming the upsetting region, completely separating the separation region and creating an isolating distance between the separated ends of the separation region in the end position of the sabot. According to the invention, an extinguishing agent is provided in such a way that the motion of the sabot and/or the upsetting of the upsetting region reduces the volume for receiving the extinguishing agent in such a way that the extinguishing agent is injected through at least one discharge channel that connects the volume for receiving the extinguishing agent to the chamber in which the separation region is located, in order to extinguish or to prevent the formation of an electric arc between the ends of the separation region. |
