ABB i-bus EIB Mode D'emploi page 23

Installation
For installation in electrical distribution boards
or in heating system distribution boards on
35 mm mounting rail, DIN EN 50022.
During project planning/stage, always take
into account the ambient temperature in the
installation when in operation and ensure that
excess heat is adequately dissipated.
Connection to the bus is performed by
plugging on the bus connection terminal. The
inputs and outputs are connected via
screwterminals. Connection cross-section
2
single or multi-core cable, 0.2-2.5 mm .
When looping through the L and N
conductors, ensure that the maximum
terminal current of 10 A is not exceeded.