Protection Device
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United States of America Patent
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Jul 17, 2014
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Jul 26, 2013
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Abstract
An object of the present invention is to provide a protection device which is able to provide suitable protection against excessive current and the abnormal high temperature, has large holding current and does not have mechanical contact. The present invention provides a protection device including (i) at least one PTC component and (ii) a thermal fuse component, wherein each PTC component and the thermal fuse component are connected to each other electrically in parallel; the thermal fuse component is under the influence of heat of at least one PTC component; and in a normal state, a current flows substantially through each PTC component and the thermal fuse component.
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