That comb bar will feed
8x 3 pole breakers.
Please go to the following links below and check under the Documentation Tab for more information.
Australia - https://www.clipsal.com/products/detail?CatNo=A9XPH324&itemno=A9XPH324&backto=/search?q=A9XPH324&tab-document-1=0
https://www.se.com/au/en/product/A9XPH324/acti9---comb-busbar---3l---18-mm-pitch---24-modules---100a/
New Zealand - https://www.se.com/nz/en/product/A9XPH324/acti9---comb-busbar---3l---18-mm-pitch---24-modules---100a/