Joewoodworker.com gives advice on making a vacuum system for a veneer press. Some folks have made YouTube videos on their builds (of his plans and pumps). One of these guys said the 5A pump can draw up to 15A at start-up. (Will probably flip the circuit breaker I wanted to use)
The fellow added a "relay" and said that would slow the draw, reducing the max.
If this makes sense, then with all the "relays" I find online, what model (or specs) will meet this purpose? Where can I learn more about this?