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Great, thanks for the link, my plan B seems to be realizable with this relay ;-)

Thanks, I'll do some research on it. twice approx. 4500 CAD for Sunny Island is too expensive for me in relation to the entire system, moreover, I would pay for functions that I do not want to use. Thank you for all the information, I will do a little research to see if I can not somehow...

What do you mean by "rotating machinery"? It would be enough to use a relay to disconnect the solar panels from the heating rods, right? The problem is, I can't find a suitable DC relay for the 5 kW I need per heating element, e.g. 200-250 volts at 20 amps.

Thank you for your answer. I have a GARN Wood Boiler with three 5.5 kW heating rods, no thermostat. Connecting DC directly was my first idea, but I haven't found any DC relays for about 200 (better 250) volts and 20 amps (6 solar panels as strings, 2 strings in parallel). I would measure the...

Hello, I am new here and have a question: I want to use a 12 kW solar system via three SunnyBoy 5.0-US to heat a 4000 liter water boiler without using batteries. I have never started the three SunnyBoys, so I could set them to off-grid. My idea is to connect a 5.5 kW heater directly to each...