The part number for wall clip to suit B15V2A is
154/2.
Please go to the following links below and check under the Documentation Tab for more information.
Australia - https://www.clipsal.com/products/detail?CatNo=154/2&itemno=154/2&backto=/search?q=154/2&tab-document-1=0
New Zealand - https://www.pdl.co.nz/products/detail?CatNo=154/2&itemno=154/2&backto=/search?q=154/2&tab-document-1=0