The new PAC-MK31(3)/51(3) branch boxes are designed for direct connection to MELANS control and supervision systems.
To connect a system composed of internal units of the Residential or Commercial Line to an M-Net centraliser, it is therefore not necessary to provide a dedicated interface.
Instead it is sufficient to use Branch Boxes and connect them to the communication bus consisting of a simple two-wire, non-polarised cable.
In addition, the new Branch Boxes do not need to be prepared for condensate drainage.