Patent ID: 9269514
Filing Date: 2016-02-23
CPC Classification: H01H

Claim Text:
1. A protection device for providing protection against the particles generated by an electric arc when a first electrically conductive part and a second electrically conductive part of an electrical connection unit are separated from each other, wherein the first and the second electrically conductive parts each have a contact surface, wherein the separation of the first and second electrically conductive parts is performed by relative sliding of one of the contact surfaces on the other contact surface, wherein the first and second electrically conductive parts are cylindrically shaped around a revolution axis and demarcate a radially outer region from a radially inner region which includes the revolution axle, wherein, in a radial direction from the revolution axis, the contact surfaces of the first and second electrically conductive parts are arranged between a first protection element and a second protection element, wherein the first protection element is cylindrically shaped around the revolution axis and located in the inner region, and wherein the second protection element is disposed in the proximity of the place at which the first part and the second electrically conductive parts separate and disposed facing one of the contact surfaces in order to form a shield against said particles, the second protection element being cylindrically shaped around the revolution axis and being located in the outer region.