These components for wiring circuit breakers in industrial, commercial and private electrical distribution boards significantly reduce the installation effort. The rails are suitable for the supply-side connection of residual current circuit breakers and circuit breakers on the top of the devices. They are designed in a fork design and are available in different versions for residual current circuit breakers with neutral conductor on the left (ANL) or right (ANR). The EV-S BS contact protection covers unused connections. Properties: Adapter rail for connecting RCCBs from the DFS series and MCBs from the DLS series when fed in from above, small design, high time savings when wiring, type of installation: The rails are plugged into the upper connection terminals of the devices to be connected. Areas of application: Rails in this series are used in conjunction with RCCBs and MCBs in power supplies for residential and commercial buildings as well as industrial plants. Notes: When supplying circuit breakers from below in combination with Doepke residual current circuit breakers, the Eurovario connecting rails EV-S G or the cut-to-length rails GM must be used.