A profile system, in particular for door systems for separating an interior space from an exterior space, comprising - a first profile element designed as a horizontal profile, - a second profile element designed as a vertical profile, - a profile connector element which is designed to be U-shaped and which has two leg parts and a base part connecting the two leg parts at one end, - as well as at least one fastening means to connect the two profile elements (3; 4) to one another using the profile connector element, - wherein the first profile element has guide channels extending in the profile longitudinal direction for receiving the two leg parts of the profile connector element, - wherein the first profile element has at least one fastening channel for receiving the at least one fastening means in a non-positive or non-positive manner, - wherein the second profile element, when viewed in cross section, has a U-shaped recess for receiving the profile connector element in certain areas, and the profile connector element in its base part and the second profile element in the bottom of its U-shaped recess has at least one assembly opening (5c; 4b) corresponding to the fastening channel of the first profile element for the passage of the fastening means, characterized in that - at least the second profile element is designed in multiple parts and has at least one first profile shell part arranged in the direction of an interior space and a second profile shell part arranged in the direction of an exterior space, wherein the profile shell parts (40a, 40b) are connected to one another and thermally separated from one another via at least one insulating element, - - and wherein, at least in the second profile element, via the insulating element itself or via the connection of the insulating element to one of the two connected profile shell parts (40a, 40b), a thrust-flexible connection is ensured between the profile shell part arranged in the direction of the interior space and the profile shell part arranged in the direction of the exterior space in such manner that relative displaceability is ensured in the profile longitudinal direction between the two profile shell parts (40a, 40b) of the second profile element. - a first profile element designed as a horizontal profile, - a second profile element designed as a vertical profile, - a profile connector element which is designed to be U-shaped and which has two leg parts and a base part connecting the two leg parts at one end, - as well as at least one fastening means to connect the two profile elements (3; 4) to one another using the profile connector element, - wherein the first profile element has guide channels extending in the profile longitudinal direction for receiving the two leg parts of the profile connector element, - wherein the first profile element has at least one fastening channel for receiving the at least one fastening means in a non-positive or non-positive manner, - wherein the second profile element, when viewed in cross section, has a U-shaped recess for receiving the profile connector element in certain areas, and the profile connector element in its base part and the second profile element in the bottom of its U-shaped recess has at least one assembly opening (5c; 4b) corresponding to the fastening channel of the first profile element for the passage of the fastening means, characterized in that - at least the second profile element is designed in multiple parts and has at least one first profile shell part arranged in the direction of an interior space and a second profile shell part arranged in the direction of an exterior space, wherein the profile shell parts (40a, 40b) are connected to one another and thermally separated from one another via at least one insulating element, - - and wherein, at least in the second profile element, via the insulating element itself or via the connection of the insulating element to one of the two connected profile shell parts (40a, 40b), a thrust-flexible connection is ensured between the profile shell part arranged in the direction of the interior space and the profile shell part arranged in the direction of the exterior space in such manner that relative displaceability is ensured in the profile longitudinal direction between the two profile shell parts (40a, 40b) of the second profile element. - - and wherein, at least in the second profile element, via the insulating element itself or via the connection of the insulating element to one of the two connected profile shell parts (40a, 40b), a thrust-flexible connection is ensured between the profile shell part arranged in the direction of the interior space and the profile shell part arranged in the direction of the exterior space in such manner that relative displaceability is ensured in the profile longitudinal direction between the two profile shell parts (40a, 40b) of the second profile element.