Electrosurgical instrument and jaw part therefor

An electrosurgical instrument comprising a jaw part made up of mutually movable instrument legs or branches which have facing sides on which one or more electrode surfaces are either arranged or formed in each case, the movement of the instrument legs or branches relative to each other being able to be limited by at least one first spacer acting on proximal end portions of the instrument legs or branches and at least one second spacer acting on distal end portions of the instrument legs or branches, wherein at least one of the spacers on at least one electrode comprises an electrically conductive material and is connected to the electrode in electroconductive fashion, and cooperates with a local spacer abutment surface which comprises a non-conductive material and is arranged in electrically insulating manner on at least one opposing electrode, wherein the spacer abutment surface comprises a concavity which points toward the spacer or is recessed with respect to the electrode area.