A temperature switching device for an electrotechnical part to be protected against an excess temperature due to a fault, with a first bimetallic switch and an ohmic resistor connected in parallel thereto, so that, after opening the bimetallic switch as a result of an excess temperature, the flow of...http://www.google.co.uk/patents/US5023744?utm_source=gb-gplus-sharePatent US5023744 - Temperature switching device
