Circuit protection device having thermally coupled MOV overvoltage element and PPTC overcurrent element

Circuit protection device having thermally coupled MOV overvoltage element and PPTC overcurrent element

In a composite electrical circuit protection device, thermal coupling between a planar PPTC element and a planar MOV element is controlled by insertion of a thermal mass material for regulating heat transfer from the MOV element to the PPTC element, such that a PPTC resistor hot zone forms consisten...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Golubovic, Boris, Becker, Paul N, Moore, Robert P
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:In a composite electrical circuit protection device, thermal coupling between a planar PPTC element and a planar MOV element is controlled by insertion of a thermal mass material for regulating heat transfer from the MOV element to the PPTC element, such that a PPTC resistor hot zone forms consistently away from the planar major foil electrode confronting the MOV thereby regulating heat transfer from the MOV to the PPTC resistor.