Prefabricated support for a rack-mountable electrical device and electrical device comprising such a support

Prefabricated support for a rack-mountable electrical device, the support comprising:

• a plate;
• a one-piece body mounted on the plate;
• an electrical connector, placed on a rear face of the prefabricated support;
• preformed electrical conductors each comprising a first end and a second end;
• the body defining, on the front face of the support, a reception housing intended to receive an electrical switching apparatus, the body also delimiting a passage in which the electrical conductors are housed, each first end of each electrical conductor being connected to the electrical connector and each second end of each electrical conductor emerging inside the reception housing, the body comprising an electrically insulating separating wall extending at right angles from an edge of the plate, said wall and at least one side of the plate forming a lateral face of the support, said lateral face comprising at least one first fixing member and at least one second fixing member, each second fixing member being of a form complementary to the first fixing member, each first member and each second member being adapted to be engaged with, respectively, another second member and another first member.