| 摘要 |
An electromagnetic contactor is provided that is capable of preventing the reduction of the magnetic flux that passes through a movable plunger when the movable plunger is operated and is capable of improving the attractive force of the movable plunger. The electromagnetic contactor has a movable contact (130) that is placed so as to be able to come into contact with and separate from a pair of fixed contacts (111) and (112), and an electromagnetic unit (200) that drives the movable contact. The electromagnetic unit (200) has: a magnetic yoke (201) with a U-shaped cross section; an upper magnetic yoke (210) that is cross-linked in an upper open part of the magnetic yoke (201) ; a spool (204) with a central opening, around which an exciting coil (208) disposed in a bottom plate part of the magnetic yoke (201) is wrapped; a movable plunger (215) that is disposed in the central opening of the spool (204) so as to be able to move in an axial direction and is coupled to the movable contact (130); and an auxiliary yoke (203) that forms a magnetic path between the movable plunger (215) and the magnetic yoke with a U-shaped cross section (201) when the movable plunger is in an open position. |
