Electromagnetic contactor including contact bearing portions for bearing fixed contacts

An electromagnetic contactor, comprising:

• a contact device including a pair of fixed contacts disposed with a predetermined distance therebetween and a movable contact disposed to contact with and separate from the pair of fixed contacts,
• a contact housing case storing the contact device therein, and including an insulating cylinder having a tubular portion and a bottom plate portion forming a lower surface of the contact housing case, and
• an electromagnet unit disposed under the contact housing case and having a movable plunger, an auxiliary yoke and a permanent magnet,
• wherein the pair of fixed contacts includes support conductor portions supported with an upper surface of the contact housing case and arranged to maintain a predetermined interval between the support conductor portions, and C-shaped portions to form a C-shape, each including an upper plate portion linked to an end portion of the support conductor portion inside the contact housing case, an intermediate plate portion extending downward from a side of the upper plate portion opposite to that of the other support conductor portion, and a lower plate portion extending from a lower end of the intermediate plate portion toward a side of the other support conductor portion and formed with a contact portion on an upper surface thereof, and
• the bottom plate portion includes a projecting portion projecting toward the pair of fixed contacts to form a space for receiving the auxiliary yoke and the permanent magnet therein, and having contact bearing portions, each including an upper portion with a contact bearing surface and located under a leading end portion of the lower plate portion in the C-shaped portion, and side portions extending downwardly from two sides of the upper portion, the contact bearing portions bearing sides of the lower plate portions of the pair of fixed contacts, opposite to the movable contact.