Abb Sace S.p.a.

Maurizio Curnis

Renato Dosmo

Low-voltage circuit breaker exhibiting live levers operatively connected to a control device for opening and closing the circuit breaker, fixed live terminals and electric arc extinction chambers, there being provision for the levers, the terminals and an extinction chamber to be enclosed in half-shells constituting a pole, for the half-shells to be made from insulating material and for several poles to be clamped in a supporting frame.

Low-voltage circuit breaker

Current switch with moving contacts cooperating with fixed contacts comprising, for each electric phase, a crank, pivoting about a pin, and a link rod, operationally connected to the crank and to the mechanism for opening and closing the switch, there being provision for the contact-carrying levers to be fulcrumed in the lower part to a pin integral with the crank, for, above the pin, the levers to have, on the opposite side to the contacts, seats against which spring means bear, for the opposite ends of the spring means to bear against seats formed at the top on the side of the support of the crank, opposite the fixed contacts.

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Calusco D'Adda, Italy

Maurizio Curnis