Patent ID: 7504914
Filing Date: 2009-03-17
Classification: C08L,H01H

Abstract:
1. An electrical switchgear, comprising: a thermal trip, and an electromagnetic trip; a switching mechanism with a latching point; at least one contact point which is continuously opened or closed by means of the switching mechanism; an operating handle which is connected to one end of a lug by a coupling element and another end of the lug which is coupled to a contact base carrying a moving contact member; a latch lever which, together with a rotatably supported trip lever that interacts with the electromagnetic trip and the thermal trip, forms the latching point, wherein the trip lever includes an axle, a first arm, and a second arm, the first arm extending from the axle in a direction towards the latch lever and the second arm extends from the axle in a direction towards the electromagnetic trip and the thermal trip, the first arm having a recess that mates with a nose of the latch lever to form the latching point, wherein the contact base for the moving contact member is located between the thermal trip and the electromagnetic trip, and wherein the thermal trip is coupled to the trip lever by a connecting rod that passes over the contact base, so that both the thermal trip and the electromagnetic trip open the latching point in an event of an excess current and/or short circuit current.