Electric switch having undervoltage tripping

Details Electric switch having undervoltage tripping Electric switch having undervoltage tripping

1997-04-15

1998-11-10

Gellner, Michael L.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 20, 335 18, 335114, 335115, 335132, 335185, 335186, 335190, H01H 7500

Patent

active

058349960

ABSTRACT:
An electric switch (1) includes a switching device (4), movable between its ON position and OFF position, for switching a current circuit. The switch (1) is combined with a magnetic circuit (28, 29) for electromagnetic undervoltage tripping. In the event of undervoltage, the magnetic circuit (28, 29), as it opens, shifts the switching device (4) to its OFF position. The switching device (4) shifted to its OFF position closes the magnetic circuit (28, 29) again. A linearly movable fixing slide (24) couples the switching device (4) with the magnet armature (28) of the magnetic circuit and fixes the magnet armature (28) on the magnet core (29) in the OFF position of the switching device (4).

REFERENCES:
patent: 4034266 (1977-07-01), Virani et al.
patent: 4329669 (1982-05-01), Krasser et al.
patent: 4570142 (1986-02-01), Ineichen et al.
patent: 5184101 (1993-02-01), Ineichen et al.
patent: 5491460 (1996-02-01), Krasser et al.
patent: 5558211 (1996-09-01), Heydner et al.

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