An appropriately designed RC switch should do the trick - just remember that the coil is going to need more volts than the receiver can supply, as was pointed out above, you should be able to feed it from the 24V supply. Back EMF needs to be managed too, or you could fry the RC switch.

A solid-state relay might be an alternative and there's likely ones that could be directly activated from the receiver.

Switching that kind of current is something to be careful about so, as gigaplex asked, does the 24V source have some way of controlling it? Many PSU's have control pins exactly for this purpose. For example, a standard ATX power supply only needs one pin to be grounded at low current for it to come to life.