USA Voltage versus Australian Voltage Question
It was good to ask.
Even though the picture says 240 VAC, the datasheet says max of 140 VAC.
https://www.sensata.com/sites/default/files/media/documents/2018-04-04/ourproducts_series-1-120-ac-panel-mount_datasheet.pdf

So you need to get a relay rated for 240 VAC. The one you linked to will probably work fine. The control voltage is compatible.