On Sunday, 18 August 2019 22:03:18 UTC+1, Adrian Brentnall wrote:
HI Folks
As the subject says - can't seem to find a contact that operates off
12volts on the coil, and is rated to switch 40+ amps @ 240v a/c.

Does such a thing exist - or do I have to use a a slave relay from the
12v to switch a 240v coil?


There's one in every pre pre-engaged starter motor car.
Off you go, down to your local car breakers.