12 channels power supply control with 16A 4pin socket   three-phase four-wire, 4-core male plug, 3-phase 5-wire 380V(A.B.C) + zero line (N),  from 4 channels to 12 channels 4-core male plug, 380V/way,  3KW/way,  with French switches,  can be connected with one by one with signal link input and output.  with ABS case packed, super light weight very portable.     Also can OEM as your own specifications and designs !