Parallel contact circuit breaker

H - Electricity – 01 – H

Patent

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Details

H01H 71/10 (2006.01) H01H 9/26 (2006.01) H01H 71/34 (2006.01)

Patent

CA 2348620

A parallel pole magnetohydraulic circuit breaker (10), having a single trip element (271) and a pair of trip mechanisms (101, 102), achieving an increased current carrying capacity with reduced nuisance trips. The trip mechanisms (101, 102) are contained wit hin separate housings (14, 16), with electrical connections (30, 40) and multipole trip mechanism (101, 102) communicating through apertures in the common wall (14'). Preferably, the armature (260) of the trip element (271) acts on a single trip mechanism (101, 102), which multiplies the available force to trigger a trip of the other trip mechanism.

L'invention se rapporte à un coupe-circuit (10) magnéto-hydraulique, à pôles parallèles, comportant un unique élément de déclenchement (271) et une paire de mécanismes de déclenchement (101, 102), ce qui permet d'obtenir une intensité de courant admissible accrue ainsi qu'un nombre réduit de déclenchements inopportuns. Les mécanismes de déclenchements (101, 102) sont contenus dans des boîtiers distincts (14, 16), les connexions électriques (30, 40) et lesdits mécanismes multiples de déclenchement (101, 102) communiquant par l'intermédiaire d'ouvertures ménagées dans la paroi commune (14'). De préférence, l'induit (260) de l'élément de déclenchement (271) agit sur un seul mécanisme de déclenchement (101, 102), ce qui multiplie la force disponible pour provoquer le déclenchement de l'autre mécanisme de déclenchement.

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