Fuse for use in high-voltage circuit

Details Fuse for use in high-voltage circuit Fuse for use in high-voltage circuit

1988-07-07

1989-09-26

Broome, H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337293, H01H 8504, H01H 8512

Patent

active

048703869

ABSTRACT:
A fuse for use in a high-voltage circuit which has a first fusible element through which most of a current in the fuse flows in a normal state of the fuse and which further breaks into two pieces when overcurrent flows therethrough and further has a second fusible element provided around the first fusible element and adapted to burn in response to the overcurrent for further melting to remaining pieces of the first fusible element in such a manner as to enlarge the distance between the remaining pieces of the first fusible element to an extent sufficient to prevent occurence of a surplus arc therebetween. Further, material of material the first fusible element has a smaller electrical resistance, a larger cross-sectional area and a lower melting point than that of the second fusible element.

REFERENCES:
patent: 3267238 (1966-08-01), Arikawa et al.

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