Apparatus for protecting a device

Details Apparatus for protecting a device Apparatus for protecting a device

1998-02-06

1999-05-18

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

337 89, 337365, 337380, H02H5/04

Patent

active

059056207

ABSTRACT:
An apparatus (10) for protecting an electrical device comprises two temperature-dependent switching mechanisms (12, 13) each having at least two temperature-dependent switch conditions, and three external terminals (15, 16, 17). The two switching mechanisms (12, 13) are arranged directly in a common housing (21) in such a way that each switching mechanism (12, 13), as a function of its temperature, connects a first or second external terminal (16, 17), associated with it, directly to a third external terminal, serving as center terminal (15), that is common to both switching mechanisms (12, 13).

REFERENCES:
patent: 4816958 (1989-03-01), Belbel et al.
patent: 5023744 (1991-06-01), Hofsass
patent: 5615072 (1997-03-01), Hofsass et al.
patent: 5708553 (1998-01-01), Hung

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