Hey all....
I found something that might be what you are after....I am in the process of automating my T500 still (Yep one of those guys! Note: I'm just a noob and starting off with a cheap system until deciding if I want to invest in some better equipment)... and they guy who designed the system has recently updated his design to use what he is calling his 'boilermaker'.
What he has done is make a boiler controller using a microcontroller, temperature probe and a solid state relay which switches at a slow rate and has a web control interface. He says it works better with heating elements and can even be used for fermentation. (I have my own idea for making a fermentation heater/monitor but I might be persuaded to use this instead.)
Theoretically the max load would be determined by the rating of the solid state relay, so if you need more power, then make it with the appropriatley sized relay.
I have a Chinese power controller and the original automation design used a stepper motor to turn the power knob to adjust the power... but mid build I am changing direction and have ordered the bits to build this 'boilermaker' as it looks better than my cheap controller.
If you are interested, the details are on github (which is a repository of all kinds of projects people are making and share.)
https://github.com/larry-athey/boilerma ... me-ov-fileCheers!
Mark