H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/57
H01H 73/00 (2006.01) H01H 89/08 (2006.01) H01H 71/24 (2006.01) H01H 71/56 (2006.01)
Patent
CA 2037046
2037046 9102369 PCTABS00003 Self-coordinated device for the control and protection of electric motors and electrical equipment, for example, comprising, in a housing (2), a single control solenoid (5), a magnetothermal release device (M), a movable main contact (4) with a double break for each phase, which main contacts (4) are mounted on a contact-carrying bar (25) which is slidable and elastically preloaded (31), with which there interacts a composite mechanism (A) for the control of circuit-opening comprising two interacting mechanisms (B; C). One mechanism (B) interacts with the control solenoid (5) for desired circuit openings and for current surges. Both mechanisms (B; C) cause circuit-opening when short-circuit currents occur, more precisely with a double pushing action on the contact-carrying bar (25). The mechanism (C) also interacts with a locking mechanism (D) interacting in turn with a control knob (3) for the manual opening of the main contacts (4).
Abb Sace S.p.a.
Swabey Ogilvy Renault
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