MAGNETIC SUBASSEMBLY OF AN ELECTRICAL BREAKER APPARATUS

摘要

Magnetic subassembly for electrical breaker apparatus, comprising a magnetic yoke ( 10 ), a fixed core ( 39 ) and a moveable core ( 30 ) sliding along an axis (X) inside an insulating sheath ( 20 ) under the action of an induction coil ( 25 ) arranged around the sheath ( 20 ). The moveable coil ( 30 ) possesses a radial annulus ( 33 ) separating a first part ( 31 ) and a second part ( 32 ) of different radial section, the magnetic yoke ( 10 ) comprises a radial face ( 11 ) perpendicular to the axis (X) with an opening ( 19 ) centred on the axis (X) and traversed by the first part ( 31 ) of the moveable core ( 30 ). The opening ( 19 ) comprises a fluted perimeter composed of a plurality (N) of teeth ( 17 ) directed towards the axis (X), hollow zones ( 15 ) situated between each tooth ( 17 ) accommodating an end of the insulating sheath ( 20 ).