Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1976-11-19
1978-07-11
Broome, Harold
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337276, H01H 8504, H01H 8518
Patent
active
041005236
ABSTRACT:
A time-lag fuse is provided which exhibits improved breaking capacity due to its novel construction. It comprises a fuse element which is securely positioned within an insulating cylindrical tube such as a glass cartridge, and a plurality of sintered ceramic bodies (e.g., cylindrical or polygonal) are circumferentially disposed within said tube so as to define a space therewith to achieve the required fusing and time-lag characteristics. The sintered ceramic bodies are arranged so as to define plurality of spaces between adjacent pairs of the ceramic bodies and the insulating tube in order to buffer the pressure created by arcing between the ceramic bodies and the insulating tube during a current overload.
REFERENCES:
patent: 3069520 (1962-12-01), Cameron
patent: 3876966 (1975-04-01), Fister
Arikawa Hiroo
Maruo Masaya
Broome Harold
San-O Industrial Co., Ltd.
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