The part number for mounting block to suit is a -
900SPMB
Please go to the following links below and check under the Documentation Tab for more information.
Australia - https://www.clipsal.com/products/detail?CatNo=900SPMB&itemno=900SPMB-WE&backto=/search?q=900SPMB&tab-document-1=0
New Zealand - https://www.pdl.co.nz/products/detail?CatNo=900SPMB&itemno=900SPMB-WE&backto=/search?q=900SPMB&tab-document-1=0