An electric hand switch with a mercury contactor, in which, regardless of its shape, size and ornamental annexes, it is mainly characterized in that its handle or drive lever is tilted around a fixed axis that coincides or forms part of the the two conductors of the circuit, and its passive and hidden arm forms the ampoule or vacuum vessel containing the mercury, and in which emerge from the end or base closest to the pivot axis, the terminals or terminals that are connected and disconnected according to be the relative position of the mass of the mercury. (Machine-translation by Google Translate, not legally binding)
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