Electric fuses employing composite aluminum and cadmium fuse ele

Details Electric fuses employing composite aluminum and cadmium fuse ele Electric fuses employing composite aluminum and cadmium fuse ele

1980-05-22

1982-03-16

Beha, Jr., William H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337293, 337296, H01H 8512

Patent

active

043203744

ABSTRACT:
The invention involves new high voltage current limiting fuses employing composite metal fuse elements. One metal of the composite is aluminum which is of high conductivity and high melting point while the other is cadmium which is of low melting point, so that melting of the low melting point metal occurs at any and all locations along the element when its temperature reaches the said low melting point. The resulting composite exhibits properties that are not the mean of the metals employed and has a reversible resistance characteristic thus facilitating the design of the fuse for low current fault interruption.

REFERENCES:
patent: 1068341 (1913-07-01), Hope
patent: 2911504 (1959-11-01), Cohn
patent: 3256409 (1966-06-01), Brandt
patent: 3848214 (1974-11-01), Salzer

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