Equipment (20, 20a) includes at least one electronic module (21) for the payload or the platform of a satellite (50) adapted to be supported by a structure (24) of the satellite, the satellite structure including a heat transfer system (44,10) for transporting dissipated heat to a radiator (51). The equipment includes at least transfer devices (22, 30, 31, 34, 341 345) for transferring heat dissipated by the electronic module and connectors (28, 34, 35, 37) for connecting the transfer devices to the heat transfer system (10) of the structure in such a manner as to enable the supply of heat exchange fluid (16) to the transfer devices and the transfer of heat dissipated by the electronic module to the radiator. A satellite structure includes an arrangement of equipments and a communication system for satellites, with particular application to the new generation of satellites with electrical propulsion.