Electrical current limiting fuse with bound sand filler and impr

Details Electrical current limiting fuse with bound sand filler and impr Electrical current limiting fuse with bound sand filler and impr

1975-10-09

1977-06-07

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337295, H01H 8510

Patent

active

040286550

ABSTRACT:
A high voltage current limiting fuse of the type including a bound silica sand filler has a fusible element provided with evenly spaced perforations along its major length. In the region of the center of the fuse, a segment of the element is provided with additional perforations. At least one of the perforations in the segment has a lead-tin alloy overlay directly adjacent its perimeter which, in conjunction with the additional perforations, lowers the low current clearing level of the fuse.

REFERENCES:
patent: 2827532 (1958-03-01), Kozacka
patent: 3243552 (1966-03-01), Mikulecky
patent: 3671909 (1972-06-01), Kozacka et al.
patent: 3838375 (1974-09-01), Frind et al.

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