Overload protective system

Details Overload protective system Overload protective system

1994-10-14

1996-10-15

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

361 58, 218 22, H01H 7500

Patent

active

055658261

ABSTRACT:
The protective device for protecting against over currents in electric circuits includes at least one electrically conductive body and two electrodes which function to supply circuit current through the conductive body and which lie against the conductive body at corresponding positions either directly or through the medium of an intermediate part. An abutment pressure is applied to the electrode so that the electrodes are maintained in abutment at the corresponding positions of the conductive body. When the devices are subjected to high short circuiting currents, the current density in the deformed abutment surfaces of the conductive body will increase, thus increasing the resistance of the device.

REFERENCES:
patent: 2752558 (1956-06-01), Kane
patent: 3509296 (1970-04-01), Harshman et al.
patent: 4163204 (1979-07-01), Sado et al.
patent: 4630014 (1986-12-01), McClellen et al.
patent: 4635012 (1987-01-01), Kohanawa et al.
patent: 4636762 (1987-01-01), Marquardt et al.
patent: 4835501 (1989-05-01), Hovanic

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