Breaker for my solar panels

[Stormthirst]

I'm finally getting to set up my solar panels ( 4x 425w panels, 48v each) and I wanted to put a breaker in between them and my EG4 3000w inverter. The inverter came with a DC breaker and I was hoping to use that. The breaker has two ports, one labeled "Line" and the other "Load". Which side should be attached to the panels and which side should be attached to the inverter?

Is this breaker going to do what I want it to do?

 

[Supervstech]

Line is the panel, load is the controller.

 

[andyw248]

The disconnect breaker you are showing is 125A. That might be a little high, you better check the requirements for your panels. My panels for example have a "short current isc (A)" of 7.08, and they are installed in series, so that value applies to the entire string. Multiplied by a factor of 1.56 that would be 11.05A, which means the rounded up breaker current would be 20A. See this article and that article for detailed explanations.