Connection device comprising: - a female socket intended to be installed in a ceiling , the female socket comprising a cavity having a bottom receiving a first electrical connector intended to be at least indirectly connected to an electrical grid, - a male plug comprising a second electrical connector and having a complementary shape to the female socket cavity , configured to removably engage in the female part , the male plug being able to change from an unlocked position in which the male plug can be inserted into the female socket , to a locked position in which the male plug is secured to the female socket and the second electrical connector cooperates axially with the first electrical connector , - an electrical conductor comprising a first end connected to the second electrical connector , and another end configured to be connected to an electrical device, the electrical conductor extending through the male plug , the male plug and the electrical conductor being two distinct elements. characterized in that the male plug includes a duct extending throughout the height of the male plug , said duct leading to a housing provided with a shoulder formed in the male plug , said housing being arranged to receive the second electrical connector , and in that the electrical conductor and the second electrical connector form a one-piece element arranged to be inserted into the duct of the male plug until the second electrical connector abuts against the shoulder in the housing such that the second electrical connector rests on the shoulder of the housing and bears the weight of the electrical device. - a female socket intended to be installed in a ceiling , the female socket comprising a cavity having a bottom receiving a first electrical connector intended to be at least indirectly connected to an electrical grid, - a male plug comprising a second electrical connector and having a complementary shape to the female socket cavity , configured to removably engage in the female part , the male plug being able to change from an unlocked position in which the male plug can be inserted into the female socket , to a locked position in which the male plug is secured to the female socket and the second electrical connector cooperates axially with the first electrical connector , - an electrical conductor comprising a first end connected to the second electrical connector , and another end configured to be connected to an electrical device, the electrical conductor extending through the male plug , the male plug and the electrical conductor being two distinct elements. characterized in that the male plug includes a duct extending throughout the height of the male plug , said duct leading to a housing provided with a shoulder formed in the male plug , said housing being arranged to receive the second electrical connector , and in that the electrical conductor and the second electrical connector form a one-piece element arranged to be inserted into the duct of the male plug until the second electrical connector abuts against the shoulder in the housing such that the second electrical connector rests on the shoulder of the housing and bears the weight of the electrical device. <EOS>