Abstract: This assembly comprises a first electrical connection part mounted on a first piece of equipment, the first piece of equipment comprising a first guiding and positioning member for the first electrical connection part, a second piece of equipment comprising a second guiding and positioning member complementary to the first one and permitting relative guiding and positioning of the second piece of equipment on the first one, and a second electrical connection part complementary to the first one, mounted on the second piece of equipment. The second electrical connection part is mounted on the piece of equipment with a clearance in one direction orthogonal to the assembly direction, and comprises a third guiding and positioning member complementary to the first one.

Abstract: A parallel printed circuit board assembly includes a main circuit board (1) and an auxiliary circuit board (2). The main circuit board has a surface (14) with a plug connector (32) and a receptacle connector (44) mounted thereon. The auxiliary circuit board has a surface (22) with a plug connector (42) and a receptacle connector (34) mounted thereon. The plug and receptacle connectors of the main circuit board respectively mate with the receptacle and plug connectors of the auxiliary circuit board. Because of the arrangement of the plug and receptacle connectors on the main and auxiliary circuit boards, the circuit boards can only connect with one another in one correct way.

Abstract: This assembly comprises a first electrical connection part mounted on a first piece of equipment, the first piece of equipment comprising a first guiding and positioning member for the first electrical connection part, a second piece of equipment comprising a second guiding and positioning member complementary to the first one and permitting relative guiding and positioning of the second piece of equipment on the first one, and a second electrical connection part complementary to the first one, mounted on the second piece of equipment. The second electrical connection part is mounted on the piece of equipment with a clearance in one direction orthogonal to the assembly direction, and comprises a third guiding and positioning member complementary to the first one.

Abstract: A device for encoding plug-in modules reliably prevents a plug-in module with a 24 V direct voltage supply from being inserted directly to the right of a plug-in module with a 230 V alternating voltage supply in a device for connecting external lines fitted with equidistant, adjacent receptacles for plug-in modules. However, this is possible on the left side, and plug-in modules of the same type can be inserted next to each other in any combination.