Magnetic trigger for a selectively operative switch

Details Magnetic trigger for a selectively operative switch Magnetic trigger for a selectively operative switch

1987-12-14

1989-02-28

Goldberg, E. A.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 35, 335172, 335119, H01H 7510

Patent

active

048089524

ABSTRACT:
There are arranged at a magnetic trigger for a selectively operative switch, a plunger-type armature, a pivotable armature and a tripping device. A plunger of the plunger-type armature acts directly upon a movable contact of a pair of contacts and the plunger-type armature is actuated using a magnetic coil or winding when the current flowing through the magnetic coil at least corresponds to a predetermined threshold current for opening the contacts. A pivotable armature is actuated by the plunger-type armature and redirects the magnetic return flux. The tripping device acts upon a switch lock mechanism and is switched into or out of the magnetic return flux by the plunger-type armature. The degree of overlap between pole shoes of the pivotable armature and of the tripping device is preselectable by an adjusting screw. There is thus realized a current-dependent, selective tripping of the switch lock mechanism.

REFERENCES:
patent: 4276526 (1987-06-01), Ciarcia et al.
patent: 4697163 (1987-09-01), Grunert et al.

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