Interchangeable tripping device for a circuit-breaker
AssigneeUnelec
InventorMichel Bruchet
Life of this patent
Estimating the term…
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.
Claims8
An interchangeable tripping device for a circuit-breaker, wherein the circuit-breaker comprises a casing, a current-passing conductor and a control mechanism operable by the tripping device to break the circuit of the current-passing conductor;
- said tripping device including excess current detection means constituted as a magnetic circuit which, in operation, surrounds the current-passing conductor, the magnetic circuit being made of two separable parts, one of which is installed in said casing and the other separable part being removable and integral with said interchangeable tripping device such that replacement of the interchangeable tripping device in the circuit-breaker can be made without disconnection of the current-passing conductor of the circuit breaker.
Dependencies are inferred from the claim text.