The EXPLODE command breaks a compound object into its component objects.
In AutoCAD MEP 2024 toolset, the first time that you explode a building systems object (for example, a part or fitting), the software converts the object to an anonymous block reference and changes its Z (elevation) value to zero. You can then explode the object again to convert it to its primitive AutoCAD components, such as lines, arcs, and splines.
Typically, you explode the objects in a drawing in order to share the drawing with users who do not have AutoCAD MEP 2024 toolset or an AutoCAD MEP 2024 toolset object enabler, or who have a version of AutoCAD not supported by the Export to AutoCAD commands.