Abstract: The invention consists of a box-shaped electrical assembly with a frontal cover and screw connections for the connection of leads accessible from the front. The cable lead openings to the screw connections are located in an open-to-the-front, longitudinal channel located at the front of the assembly. The cover acts as a labeling plate and also functions as a cover for the longitudinal channel and for the screw connections. The screw connections electrically connect an external cable to a plug unit subassembly. The plug unit is connectable with a circuit board enclosed within the assembly. The plug unit is provided with a pivotal axis, and is adapted for connecting to a plug strip that is mechanically and electronically connected to the circuit board.

Abstract: The invention concerns an electrical system consisting of removable, variably sized, individual sub-assemblies interconnected electrically and physically with an assembly carrier. This assembly carrier provides mounting for connectors of various configurations which mate with the individual sub-assemblies, and also provides mounting for the sub-assemblies themselves. The sub-assembly mounting is by means of a U-shaped projection on which each sub-assembly attaches and then pivots into its secured position. The sub-assembly electrical connectors are mated to the assembly carrier connectors during this pivoting into position. The U-shaped projection is surrounded in a direction perpendicular to the carrier by guide plates providing lateral location and separation of the variably-sized individual sub-assemblies.

Abstract: In an a-c magnet in which slots are provided which run transversely to the direction of the laminations in the surface of at least one pole and in which a shorting ring is arranged with its long sides in the slots, the slots are caused to have mortized edges so that each long side of the spring is pushed on both sides toward the bottom of the slot. The shorting ring is thus caused to reliably rest at the bottom of the slot, and loosening and vibration of the shorting ring are thereby prevented.

Abstract: An arrangement for coupling the armature and contact-bridge carrier for an electromagnetic switching device, such as a relay which comprises an elastic interlay interposed between the contact-bridge carrier and the armature of the relay. The interlay is shaped substantially like the frustum of a cone. The first surface or base of the cone contacts the contact-bridge carrier, while the second surface or cut-off side of the cone frustum, contacts the armature. This arrangement, minimizes the lateral shock-loading of the contact-bridge carrier when the relay is switched off so that resulting mechanical moments are kept relatively small. Further, the arrangement provides an increased level of damping.