Patent ID: 9224558
Filing Date: 2015-12-29
Classification: H01H

Abstract:
1. A switching device suitable for direct current operation, the device comprising: a gas-tight encapsulated, electrically insulating housing configured to be filled with an insulating gas; a pair of contacts disposed in the housing, the contacts including a fixed contact and a mobile contact, the pair of contacts being in contact with each other in a switched-on state of the switching device, and the pair of contacts being not in contact in a switched off state of the switching device; an arc driver arrangement configured to produce a magnetic field at least in the region of the contact pair; a first arc routing arrangement with which an arc, produced between the contacts, is guidable in a first current direction to a quenching area of the housing, the quenching area being arranged at a distance from the pair of contacts; and a second arc routing arrangement, provided such that an arc produced between the contacts is routed in a second current direction opposite to the first current direction in the direction of the quenching area, wherein each arc routing arrangement comprises an external guide plate that stretches from the fixed contact and an internal guide plate that stretches from the mobile contact, and the distance between the external guide plate and the internal guide plate increases in the direction of the quenching area, wherein the fixed contact is connected to a housing bottom, wherein the housing bottom is arranged opposite to the quenching area, and wherein a bridge contact piece, on which the mobile contact is disposed, includes an actuator, the actuator being driven through the housing bottom through a flexible gas seal.