Fusible element for electrical apparatus

Details Fusible element for electrical apparatus Fusible element for electrical apparatus

1975-08-27

1977-03-15

Harris, George

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fluorescent lamp-starting devices

337162, 337166, H01H 6100

Patent

active

040127079

ABSTRACT:
Multiple portions exhibiting relatively different heat conductance characteristics, and so arranged that heat is concentrated in the fusible element, are used to control the heat transfer in a fusible element to achieve preselected time-current fusion characteristics. A portion of the fusible element may also be made of a material exhibiting a relatively high temperature coefficient of resistance for additional control definition of the time-current characteristics.

REFERENCES:
patent: 1446554 (1923-02-01), Ellison
patent: 2816989 (1957-12-01), Sugden
patent: 3244839 (1966-04-01), Albright
patent: 3806680 (1974-04-01), Link
patent: 3913047 (1975-10-01), Arthur et al.

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