Originally Posted by TahoeRy
I could be wrong but i think you should base it on amps? If your running a 110v the 2352 should do it as its rated to 25amps (I think). If your running 220v the 2362 is the way to go as its 40amps. I bet the 2362 could run 110v fine, but I doubt the 2352 could run 220v. Check what kind of line your running for the system and base it on that. I needed the 2362 because I run a 220v 30amp system with my 5500watt heating element.
This is incorrect. You can definitely use either device on a 220v 30a system. Neither produces enough output power to drive a 5500w element without an SSR or mechanical relay (an SSR is more suitable for frequent switching). I believe each will take either 110v or 220v as input. Typical configuration is to drive the PID with 110v, fuse it because it needs less than an amp, and have it switch either a 25a or 40a SSR that drives the 220v 5500w element (often with a DPST mechanical between the SSR and element to provide a certain "off" switch).