H01H50/18—Movable parts of magnetic circuits, e.g. armature
H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
H01H50/22—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil wherein the magnetic circuit is substantially closed
Déclencheur électromagnétique à haute sensibilité polarisé pour un appareillage électrique de protection et appareillage électrique de protection associé