Circuit-interrupter

Details Circuit-interrupter Circuit-interrupter

H - Electricity

01

H

306/353, 306/56

H01H 1/54 (2006.01) H01H 33/38 (2006.01) H01H 77/10 (2006.01)

Patent

CA 1036644

ABSTRACT OF THE INVENTION In the improved operating mechanism of the instant invention there is associated with the rotatable contact- operating arm an abutment member, such as a plate, for example, which is associated with the contact-pressure spring, and a reverse-current loop arm pivotally mounted to the contact- actuating arm has a nose portion bearing on said abutment member or plate, and operable during the de-energized condition of the magnet to act in an opening direction against said abutment plate, and have its fulcrum point at the pivot-shaft location between the contact-actuating arm and the movable contact stem. Thus, magnetic forces are brought into play to redirect the reverse-current loop effect, and to pry, in effect, the welded contacts apart, and thereby assist the opening accelerating springs of the circuit-interrupter or contactor.

229201

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