In a relay, the magnet system is mounted in the upper zone of a cap-shaped housing, while the contact system (8) is inserted into the housing from the open underside until the contact (91, 92) closes when the magnet system is excited. After further insertion by a prescribed extra way, the contact system (8) is connected to the housing (1) without a stop at its edge (82a). It is therefore possible to compensate manufacturing tolerances during assembly, so that subsequent adjustment of the contact system is not required.