An electromagnetic relay comprising: a base; an electromagnet block fixed to the base; an armature configured to reciprocate when the electromagnet block is switched between an excitation state and a non-excitation state; a card configured to slide in association with a movement of the armature; a movable contact portion fixed to the base and including a movable contact which moves in association with a slide of the card; and a fixed contact portion fixed to the base and including a fixed contact (711, 751) brought into contact with and separated from the movable contact in association with a movement of the movable contact, the base including a rail portion configured to guide the card upon sliding, the card including a slide portion configured to slide along the rail portion, the rail portion including a stopper portion to prevent disengagement of the slide portion from the rail portion, characterised in that: the rail portion is provided with plural stopper portions each corresponding to the stopper portion and aligned in an extending direction of the rail portion, and provided with a space between the aligned stopper portions (291, 291) through which the slide portion can be introduced; and the card is slidably held to the base such that the card is moved in a direction intersecting the extending direction of the rail portion so that the slide portion is introduced to the rail portion through the space, and the card is moved in the extending direction of the rail portion in a state in which the slide portion is introduced in the rail portion so that the slide portion and the stopper portions at least partly overlap with each other as viewed in the direction intersecting the extending direction of the rail portion. a base; an electromagnet block fixed to the base; an armature configured to reciprocate when the electromagnet block is switched between an excitation state and a non-excitation state; a card configured to slide in association with a movement of the armature; a movable contact portion fixed to the base and including a movable contact which moves in association with a slide of the card; and a fixed contact portion fixed to the base and including a fixed contact (711, 751) brought into contact with and separated from the movable contact in association with a movement of the movable contact, the base including a rail portion configured to guide the card upon sliding, the card including a slide portion configured to slide along the rail portion, the rail portion including a stopper portion to prevent disengagement of the slide portion from the rail portion, characterised in that: the rail portion is provided with plural stopper portions each corresponding to the stopper portion and aligned in an extending direction of the rail portion, and provided with a space between the aligned stopper portions (291, 291) through which the slide portion can be introduced; and the card is slidably held to the base such that the card is moved in a direction intersecting the extending direction of the rail portion so that the slide portion is introduced to the rail portion through the space, and the card is moved in the extending direction of the rail portion in a state in which the slide portion is introduced in the rail portion so that the slide portion and the stopper portions at least partly overlap with each other as viewed in the direction intersecting the extending direction of the rail portion. the rail portion is provided with plural stopper portions each corresponding to the stopper portion and aligned in an extending direction of the rail portion, and provided with a space between the aligned stopper portions (291, 291) through which the slide portion can be introduced; and the card is slidably held to the base such that the card is moved in a direction intersecting the extending direction of the rail portion so that the slide portion is introduced to the rail portion through the space, and the card is moved in the extending direction of the rail portion in a state in which the slide portion is introduced in the rail portion so that the slide portion and the stopper portions at least partly overlap with each other as viewed in the direction intersecting the extending direction of the rail portion.