Interchangeable tripping device for a circuit-breaker

Details Interchangeable tripping device for a circuit-breaker Interchangeable tripping device for a circuit-breaker

1977-04-13

1978-12-19

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335176, H01H 7174

Patent

active

041308140

ABSTRACT:
A tripping device of a circuit-breaker is detachable so as to be able to cover ranges of excess currents with a small number of calibers each represented by an interchangeable tripping device. For this purpose, the magnetic excess current detection circuits are made in two detachable parts, one fixed to the tripping device, the other installed floating on the housing of the device to be controlled whose interchangeability permits the automatic changing of the magnetic characteristics of the tripping device.

REFERENCES:
patent: 3559120 (1971-01-01), Myers
patent: 3906414 (1975-09-01), Kidd et al.
patent: 4037183 (1977-07-01), Gaskill
patent: 4064469 (1977-12-01), Gryctko

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