Will this replacement induction cooktop fit in the cutout for the old cooktop?
Original
According to the documentation the original requires a 495mm x 565mm cutout, and has an overall size of 520mm x 590mm.


Source

New
According to the documentation the new unit requires a 490mm x 560mm cutout, and has an overall size of 520mm x 590mm.



Source
Source (PDF)

Side by Side

                Old     New
Width           590     590
Depth           520     520
Cutout Width    565     560
Cutout Depth    495     490


Verdict
While the new model requires a bit smaller cutout, the overall size of the cooktops are the same. So other than possibly requiring a bit of shimming, the new model should fit without a problem.