Thanks to my mate Raz I now have an Arlec Single Outlet Safety Switch from Bunnings. It’s a 30mA residual-current device (RCD), which is a type of earth-leakage circuit breaker (ELCB).
You can see my bench UPS in the bottom right:
It’s a PowerShield Defender 1200VA.
The UPS then has the Arlec device in the back of it, which then powers the rest of my bench (behind the scissors):
You can see I still have my Xbox power cable plugged in. We’re not sure exactly what that does. In addition to an electronic fuse maybe an RCD or maybe an arc-fault circuit interrupter (AFCI) or maybe all of the above.