Patent ID: 8093524
Filing Date: 2012-01-10
Classification: H01H

Abstract:
1. An electrical switchgear unit assembly, said unit being housed in a case, and comprising: at least one stationary contact and at least one movable contact, the at least one movable contact supported by a rotatable contact support shaft for rotating the at least one movable contact to an open or closed position, the open position defined by a separation between the at least one movable contact and the at least one stationary contact, and the closed position defined by contact between the at least one movable contact and the at least one stationary contact, an opening and/or closing mechanism of the at least one movable contact fitted in a support, said mechanism comprising a manual operating handle rotatably fitted around a toggle pin of the case, a high-speed closing shaft for maintaining the at least one movable contact in the open position, at the beginning of a manual closing operation of the handle, during a period of initial movement of the handle, by storing energy, and releasing the at least one movable contact after the initial movement of the handle so that the stored energy causes high-speed closing of the at least one movable contact to the closed position, and means for fixing the mechanism inside the case, wherein the support of the mechanism is monoblock and comprises, on one of its side faces, an opening for accommodating at least a part of said high-speed closing shaft, the high-speed closing shaft at least partially laterally insertable into said support when the support is fitted inside the case, the direction of insertion of the shaft into the support being substantially perpendicular to the longitudinal axis of the shaft wherein said means is located on one side of the mechanism only with respect to the high-speed closing shaft.