What are the two breaker handles on an EG4 Lifepower4 for?

I think I see two handles on the current models, one larger and one smaller.

Does anyone know what the purpose of that is? I read the manual and didn't see anything, it just says "breaker".

To turn on/off the breaker....when you first turn it on, it allows the precharge resister to power up first to not damage your equipment with inrush power, then once the BMS starts, all the power starts coming. Just guessing that one connects the main power, and the other powers the BMS, but that is just a guess based on how it works. Either way, they are connected and can only be turned on/off together.

Oh so they're tied. Thank you.