Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1985-06-24
1986-12-09
Broome, Harold
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337203, 337217, 337250, H01H 8502, H01H 8514
Patent
active
046282920
ABSTRACT:
An under oil expulsion fuse cartridge assembly includes a tubular housing of non-electrical conductive material, an electrically conductive contact removably threadedly mounted on each end of the housing, and a replaceable fuse assembly removably received within the tubular housing. One of the end contacts incorporates a pressure chamber providing a flushing and cleaning operation during the interruption process. The fuse assembly includes a fuse liner tube in a fuse link therein in the form of a flat ribbon element electrially connected to each of the end contacts. One end of the fuse link is mounted on a thin disc which includes a plurality of projecting lands that prevent direct engagement of the fuse link with the end contact to avoid breaking the fuse link. The fuse link also includes a plurality of holes formed therethrough covered by a eutectic material having a desired melting temperature so that current interruption occurs at a predetermined operating temperature.
REFERENCES:
patent: 4205295 (1980-05-01), Nahieu
Borck Gordon T.
Muench Frank J.
Broome Harold
RTE Corporation
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