Switching device
AssigneeMoeller Gebaudeautomation GmbH
InventorAdolf Tetik
Life of this patent
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Abstract
A switching device has an input terminal and an output terminal for connection to electrical conductors, and two switching contacts which, when closed, close a current path between the input terminal and the output terminal. An overcurrent trigger device which includes a bimetallic element heated by an electric current flow is provided for disconnecting the two switching contacts. A thermal insulator is arranged in the attachment region of the bimetallic element for reducing heat transfer from the bimetallic element as well as for increasing the accuracy and the degree of reproducibility for triggering the switching device. The switching device can be implemented as a circuit breaker.
Claims15
A switching device, comprising:
- an input terminal and an output terminal for connection to electrical conductors;
- first and second switching contacts which, when closed, close a current path between the input terminal and the output terminal;
- an overcurrent trigger device comprising a bimetallic element heated by an electric current flow, said bimetallic element is attached to a first conductor of the current path, said overcurrent trigger device operable to disconnect the first switching contact and the second switching contact;
- and
- a thermal insulator arranged in a region of attachment of the bimetallic element for reducing heat transfer from the bimetallic element,
- wherein the bimetallic element is connected with the first electrical conductor with a connecting rivet constructed as a thermal insulator, and
- wherein the thermal insulator includes the connecting rivet.
Dependencies are inferred from the claim text.