H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 71/40 (2006.01) H01H 73/48 (2006.01)
Patent
CA 2557682
The invention relates to electrical switching device, particularly line, motor or fault-current circuit breakers, with a thermal release, with an electromagnetic release, with a switching mechanism with a latching point and at least one contact point which is continuously opened or closed by means of the switching mechanism, with an operating handle which is connected to one end of a lug by means of a coupling element and the other end of which is coupled to a contact base carrying the moving contact member, and with a latching lever which, together with a release lever, forms the latching point. The contact base for the moving contact member is located between the thermal release and the electromagnetic release. Together with a rotatably supported release lever interacting with the electromagnetic release and the thermal release, the latching lever forms the latching point. The thermal release is coupled to the release lever by means of a connecting rod passing over the contact base so that both the thermal release and the electromagnetic release open the latching point in the event of an overcurrent and/or short-circuit current and in that a striking lever is provided, which is mounted such that it can rotate, can be pivoted on the one hand by the thermal release and on the other hand by the electrical release, and, on release, pivots the release lever in the direction to unlatch the latching point.
Christmann Juergen
Weber Ralf
Abb Patent Gmbh
Marks & Clerk
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