The Isobar 4c and Acti9 Isobar Distribution Boards outgoing ways are designed to be fitted only with C60H and iC60H MCB's up to 63A and RCBO's up to 45A
Contactor's and other DIN rail devices cannot be fitted.
They should be fitted on a DIN rail in an enclosure above or below the board
In the case of single phase boards, a multiservice single phase distribution board has a DIN rail already fitted next to the outgoing ways for you to use for contactors/time clocks or similar
See link below for part numbers on the Multi Service Single Phase Boards
https://www.se.com/uk/en/download/document/SE8863_1/
As for a three phase board an extension box with a DIN rail of 17 single pole ways part number is SEA9BNEX034N for both series of Distribution Boards
Contactor's and other DIN rail devices cannot be fitted.
They should be fitted on a DIN rail in an enclosure above or below the board
In the case of single phase boards, a multiservice single phase distribution board has a DIN rail already fitted next to the outgoing ways for you to use for contactors/time clocks or similar
See link below for part numbers on the Multi Service Single Phase Boards
https://www.se.com/uk/en/download/document/SE8863_1/
As for a three phase board an extension box with a DIN rail of 17 single pole ways part number is SEA9BNEX034N for both series of Distribution Boards