Electrical cutout having a linkbreak lever

Details Electrical cutout having a linkbreak lever Electrical cutout having a linkbreak lever

1984-06-12

1985-10-08

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337217, H01H 7120

Patent

active

045463417

ABSTRACT:
An electrical cutout is disclosed for electrical connection between a line terminal and a load terminal. The cutout includes an insulator having a first and a second end. A first electrical conductor is rigidly secured to the first end of the insulator, the first conductor being electrically connected to the line terminal. A second electrical conductor is rigidly secured to the second end of the insulator, the second conductor being electrically connected to the load terminal. A fuse tube extends between the first and the second conductors and a fuse link extends through the fuse tube and includes a first and a second end. The second end or pigtail of the fuse link is electrically connected to the second electrical conductor. A cap is disposed adjacent the first end of the fuse link, the cap being electrically connected to the first end of the fuse link such that the cap frictionally cooperates with the first conductor. A linkbreak lever for breaking the fuse link is pivotally connected to the second conductor such that when the linkbreak lever is pivoted away from the fuse link in a plane extending through the ends of the insulator and the fuse tube, the moment created by the force required to break the fuse link is opposite in direction and less than the moment resulting from the retentional force between the first conductor and the cap.

REFERENCES:
patent: 2835764 (1958-05-01), Earle
patent: 2836681 (1958-05-01), Bracey

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