Patent ID: 9653236
Date: 2017-05-16
CPC Classifications: H01H

Claim:
1. An electromagnetic relay comprising: a fixed contact; a moving contact, movable with respect to the fixed contact, the moving and fixed contacts each having a diameter; a pair of magnets arranged so as to sandwich the fixed contact and the moving contact, pole faces of the pair of magnets with mutually reversed polarity being separated from and facing each other; and a pair of arc cooling plates which is arranged in a space between the pair of magnets at a position apart from the fixed contact and the moving contact, so as not to sandwich the fixed contact and the moving contact, in a direction in which an arc generated between the fixed contact and the moving contact is stretched by a magnetic field of the pair of magnets with a gap, smaller than the diameter of the moving and fixed contacts, defined between and separating the pair of arc cooling plates, the pair of arc cooling plates having a first surface and a second surface, the first surface of the pair of arc cooling plates facing each other across the gap, and the second surface of the pair of arc cooling plates facing a pole face of either of the pair of magnets.