Composition resistor with an integral thermal fuse

Details Composition resistor with an integral thermal fuse Composition resistor with an integral thermal fuse

1975-09-11

1977-02-01

Albritton, C. L.

Electrical resistors

With switch

29613, 219517, 317 9R, 317 9AC, 337296, 338273, 338275, H01C 1300

Patent

active

040064433

ABSTRACT:
A composition resistor incorporates a thermal fuse inert preferably positioned at its center. The insert includes a fuse link which under normal conditions provides electrical continuity between lead wires extending from each end of the resistor. If a current overload occurs, the heat generated by the resistance material raises the temperature at the center of the resistor to the melting point of the fuse link and the fuse link opens circuit before the organic constituents of the resistor begin to decompose or ignite.

REFERENCES:
patent: 3238490 (1966-03-01), Thomson
patent: 3887893 (1975-06-01), Brandt et al.

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