PURPOSE: A device for connecting cables is provided to solidly secure coupling between a lead line clamp and a branch loop by limiting a separation distance for the movement of the lead line clamp and a first lead line. CONSTITUTION: A body integratedly has a first lead line fixed at an extended plate and a coupling groove at one side. A lead line clamp(30) includes a pushing bolt(40) providing pushing pressure by putting a pushing plate(42) on the body. A branch loop(10) has a coupling surface(14) formed within a frame(12) and coupled by the pushing pressure of the pushing bolt in a state that the branch loop is contained in the coupling groove and secured on the pushing plate. A fixing hole includes the movement preventing groove to fix the first lead line at the extended plate of the lead line clamp.
