Yes, multiple extension boxes can be fitted to the three phase Isobar and Acti 9 Distribution Boards.
Extension boxes can only be fitted to the IP31 rated boards and not the IP55 heavy duty boards.
We would not really recommend more than 2 extesion boxes being stacked.
Extension boxes can only be fitted to the IP31 rated boards and not the IP55 heavy duty boards.
We would not really recommend more than 2 extesion boxes being stacked.