Yes, there is a mounting block for the 40. The part number is 447.
Some of the key features are:
- Moulded mounting blocks
- With metal inserts
- 3 mounting screw positions
- suits 40, 40D and switches with 115x48 mm flush plates and 98 mm mounting centres
For further information please visithttps://www.clipsal.com/Trade/Products/ProductDetail?catno=447