Thank you Tony, I’ve had a look at that relay and ordered one. Solid state switching has got to be much better than mechanical relays. The issue with the old relay was that the contacts were completely burnt away. That said, it had worked for many years but I would guess that a Chinese replacement wouldn’t be the same quality. My compressor is a 175 watt so this should be able to cope easily.
Thanks again for the info.
Nick.