An electrical device comprising a PTC polymer element for overcurrent fault and short-circuit current fault protection
The invention relates to an electrical device with a PTC polymer element having a constriction. The constriction defines a web extending in a main current direction over a length longer than in the prior art, namely longer than 5 mm, preferably longer than 15 mm. Further, the aperture angle of the P...
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Main Authors | , |
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Format | Patent |
Language | English French German |
Published |
24.01.2007
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to an electrical device with a PTC polymer element having a constriction. The constriction defines a web extending in a main current direction over a length longer than in the prior art, namely longer than 5 mm, preferably longer than 15 mm. Further, the aperture angle of the PTC polymer material at the ends of the web is larger than 100 DEG . A preferred choice of material is given, further. The invention achieves very high voltage-withstand capabilities. |
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Bibliography: | Application Number: EP20000810069 |