Electromagnetic contactor

An electromagnetic contactor, comprising:

• a return spring;
• an electromagnet device that includes a fixed iron core having an electromagnetic coil and a movable iron core attracted to the fixed iron core against the elastic force of the return spring;
• a plate spring;
• a plurality of movable contacts, one for each of a plurality of phases;
• a movable contact support retaining the movable contacts, the movable contacts being connected to a back face of the movable iron core via the plate spring,
• a mold frame for guiding the movable contact support in a slidable manner, and
• a pair of front and rear fixed contacts fixed to said mold frame;
• wherein, when excitation of the electromagnetic coil allows the movable iron core to be attracted to the fixed core, the movable contacts bridge the fixed contacts, and, when demagnetization of the electromagnetic coil allows the movable iron core to be released, the spring force of the return spring moves the movable iron core, the movable contacts are separated from the fixed contacts, and the movable iron core collides with the mold frame to stop;
• wherein the mold frame includes first and second collision sections opposed to the back face of the movable iron core with the movable contact support therebetween, the collision sections having different heights so that an end face of the first collision section is disposed closer to said fixed iron core than an end face of the second collision section;
• and
• wherein the movable contact support has a base bottom face that abuts the back face of the movable iron core, the base bottom face having an inclined plane in the vicinity of the higher collision section of the mold frame, such that the inclined plane is below a point in front of a center of the base bottom face.