A tension relief for a cable carrier. A multi-part holding frame comprising bars which are connected by side parts holds block-like spacers, between which a plurality of lines, such as cables, hoses or the like, are laid. In order to exert a clamping force by the holding frame on the spacers for the purpose of strain relief, a quickly closable device is provided. A quick release clamp can be provided, which in the closed position clamps the side parts and/or the bars to one another. According to the invention, the two side parts are mounted pivotably on the lower strip and are fastened releasably to the first bar, for example by screws or the quick release clamp. Each side part can thus be pivoted from the closed position into an open position and vice versa in order to release and clamp the lines respectively.