Abstract: An electromagnetic relay includes a plurality of fixed contact terminals, a main body assembly formed by combining an electromagnetic assembly with an armature assembly, a terminal board having a plurality of pocket shaped recess portions engaged with the plurality of fixed contact terminals, and a convex band located on the terminal board so as to isolate the plurality of fixed contact terminals from each other, the convex band including a groove into which a back-stop metal or one of the plurality of fixed contact terminals is inserted, and a cover for receiving an electromagnetic relay main body formed by combining the main body assembly with the terminal board.

Abstract: An electromagnetic relay comprises a coil and a contact group containing a plurality of normally open contacts which are connected in series under control of an electromagnet created when this coil is energized. This electromagnetic relay can prevent a short-circuit from occurring between the normally closed contact and the normally open contact due to an arc even though the contact gap length is reduced.

Abstract: When an electromagnetic relay connects a movable contact to a normally open contact N/O, direct current flows through direct current motor and thereby the direct current motor is driven. When the electromagnetic relay connects the movable contact to a normally closed contact N/C, the rotation of the direct current motor is braked. A plurality of normally open contacts N/O are connected in series in the passage of direct current obtained when the electromagnetic relay connects the movable contact to the normally open contact N/O.