How Can I connect My Solar System?

I brought this here: https://tinyurl.com/y4a2ag2d (50A Solar Controller) now I want to connect an inverter to it and they said to connect the inverter directly to the battery. What is these "60A/50A/40A/30A/20A/10A "? I choose the 50A one and wanted to know the Amps are used for DC Load or what's the... show more I brought this here: https://tinyurl.com/y4a2ag2d (50A Solar Controller) now I want to connect an inverter to it and they said to connect the inverter directly to the battery.

What is these "60A/50A/40A/30A/20A/10A "? I choose the 50A one and wanted to know the Amps are used for DC Load or what's the use of selecting "60A/50A/40A/30A/20A/10A" if it is to be connected to the battery eventually?
Update: The season for not wanting to connect it to the battery is: The Protections (Load, Over Charging, Deep Charging, etc) go away if I connect the inverter to the battery directly.
Update 2: Reason *
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