1. An electromagnetic relay, comprising: a first contact pair including a first fixed contact part and a first movable contact part, and a second contact pair including a second fixed contact part and a second movable contact part, each fixed contact part (10a, 10b) including a fixed terminal and a fixed contact connected to the fixed terminal, and each movable contact part (20a, 20b) including a movable spring and a movable contact connected to the movable spring; an armature to which the first movable contact part and the second moveable contact part are connected; an electromagnet configured to move the armature; a magnet (50, 150) configured to stretch an arc generated between the fixed contact and the movable contact of the first contact pair and an arc generated between the fixed contact and the moveable contact of the second contact pair; the magnet (50, 150) being disposed between the first contact pair and the second contact pair, characterised in that the relay further comprises: two pairs of a first arc extinguishing plate (61, 161) and a second arc extinguishing plate (62, 162), each pair of the first arc extinguishing plate (61, 161) and the second arc extinguishing plate (62, 162) being configured to extinguish the stretched arc; each fixed contact and each movable contact are disposed between the corresponding pair of the first arc extinguishing plate (61, 161) and the second arc extinguishing plate (62, 162), wherein the armature is provided with a bend and is divided at the bend into a first side to be brought into contact with the electromagnet and a second side connected to the first movable contact part and the second movable contact part; and multiple slits are formed in the second side of the armature such that the second side is shaped like a comb having multiple teeth. a first contact pair including a first fixed contact part and a first movable contact part, and a second contact pair including a second fixed contact part and a second movable contact part, each fixed contact part (10a, 10b) including a fixed terminal and a fixed contact connected to the fixed terminal, and each movable contact part (20a, 20b) including a movable spring and a movable contact connected to the movable spring; an armature to which the first movable contact part and the second moveable contact part are connected; an electromagnet configured to move the armature; a magnet (50, 150) configured to stretch an arc generated between the fixed contact and the movable contact of the first contact pair and an arc generated between the fixed contact and the moveable contact of the second contact pair; the magnet (50, 150) being disposed between the first contact pair and the second contact pair, characterised in that the relay further comprises: two pairs of a first arc extinguishing plate (61, 161) and a second arc extinguishing plate (62, 162), each pair of the first arc extinguishing plate (61, 161) and the second arc extinguishing plate (62, 162) being configured to extinguish the stretched arc; each fixed contact and each movable contact are disposed between the corresponding pair of the first arc extinguishing plate (61, 161) and the second arc extinguishing plate (62, 162), wherein the armature is provided with a bend and is divided at the bend into a first side to be brought into contact with the electromagnet and a second side connected to the first movable contact part and the second movable contact part; and multiple slits are formed in the second side of the armature such that the second side is shaped like a comb having multiple teeth. two pairs of a first arc extinguishing plate (61, 161) and a second arc extinguishing plate (62, 162), each pair of the first arc extinguishing plate (61, 161) and the second arc extinguishing plate (62, 162) being configured to extinguish the stretched arc; each fixed contact and each movable contact are disposed between the corresponding pair of the first arc extinguishing plate (61, 161) and the second arc extinguishing plate (62, 162), wherein the armature is provided with a bend and is divided at the bend into a first side to be brought into contact with the electromagnet and a second side connected to the first movable contact part and the second movable contact part; and multiple slits are formed in the second side of the armature such that the second side is shaped like a comb having multiple teeth.