Protective fuse shield for disconnect switches

Details Protective fuse shield for disconnect switches Protective fuse shield for disconnect switches

1996-06-28

1997-11-11

Nguyen, Matthew V.

Electricity: circuit makers and breakers

Interlocking

Between switches and housing

200 5002, H01H 920

Patent

active

056867085

ABSTRACT:
A fuse shield plate is pivotally mounted over the fuses which are electrically associated with a disconnect switch. The switch operating lever is connected to an interlock rod which extends to a dead front receptacle. Interfitting elements on the fuse shield and the interlock rod prevent the fuse shield from being opened when the operating lever has been moved to close the switch contacts. When the fuse shield is opened to expose the fuses, the interfitting elements prevent the operating lever from being moved to close the switch contacts.

REFERENCES:
patent: 3896353 (1975-07-01), Burton et al.
patent: 4149216 (1979-04-01), Kussy et al.
patent: 4233482 (1980-11-01), DiMarco et al.
patent: 5212624 (1993-05-01), Johnson et al.
patent: 5559662 (1996-09-01), Happ et al.
patent: 5590019 (1996-12-01), Fox et al.

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