The mini coupling is one of many components in the DUOline rail system and connects two rails in a straight line with a mininal distance between the rails. The 2-phase system is extremely flexible and offers many possibilities for individual lighting design. With DUOline 2-phase rails, the protective conductor is located on one side of the rail profile. The position of the protective conductor (right or left) is determined by the installation of the selected connection and must continue continuously throughout the system. The system is available in three different color variants, here m-white.