Abstract: An electromagnetic relay includes a pair of fixed contact terminals arranged; a movable contact terminal that approaches the pair of fixed contact terminals and separates therefrom, thereby making a portion between the pair of fixed contact terminals conducted or cutoff; a contact part between the pair of fixed contact terminals and the movable contact; a contact terminal housing that accommodates the pair of fixed contact terminals, the movable contact terminal and the contact part, the contact terminal housing including an arc extinguishing chamber; and a magnet that produces magnetic field causing the arc to be extended and guiding the arc to the arc extinguishing chamber. In the contact terminal housing, a communication hole is provided, being formed at a portion positioned in a predetermined direction relative to the contact part, the communication hole causing the arc extinguishing chamber to communicate with outside the arc extinguishing chamber.