An assembly of mains electricity (AC-powered) devices intended to be used to perform patient haemodialysis, a treatment whereby extracorporeal blood is passed through a filter to allow for the removal of toxins and/or the replacement of electrolytes, by trained professionals in a healthcare facility. The system functions with dialysate solution and a haemodialysis dialyser (haemodialyzer) for the transfer of substances by diffusion, osmosis and ultrafiltration. It typically includes a pump and tubing to circulate blood through the haemodialysis dialyser, a solution mixer to prepare the dialysate, a monitor with system controls, and other dedicated components.