Contact mechanism and the fixed iron core which are substituted with to trip position and reset position ardently, to make the permanent magnet and the magnetic circuit and the aforementioned armature alienate which arrange the armature in annulation from the aforementioned fixed iron core and in order for the aforementioned contact mechanism to substitute to reset position ardently, at the time of the contact mechanism spring and the overload detection which energization are done, generating the magnetic flux of identical direction with the magnetic flux of the aforementioned permanent magnet due to electrification, resisting the aforementioned contact mechanism spring, the aforementioned armature from reset position to change to trip position, from at the time of overload detection predetermined time after the elapsing, with opposite direction electrification magnetic flux of opposite direction to the magnetic flux of the aforementioned permanent magnetOccurring, at the position where the coil and the aforementioned armature which make the armature open which is kept in the aforementioned trip position by the adsorption power of the said permanent magnet from the aforementioned fixed iron core open a little from the aforementioned fixed iron core, resisting the attaching power of the aforementioned contact mechanism spring, movable stopper and the aforementioned movable stopper which the aforementioned contact mechanism person in charge stopping are done, the reset bar which is changed with to person in charge stopping position and the non person in charge stopping position which the aforementioned contact mechanism person in charge stopping are done and, it has.
展开▼
