Blue sea disconnect .,

pyana1

i have a combiner box with a disconnect option therefore I'd only need a blue sea disconnect to keep my inverter and charge controller (MS mppt60) off while I water my batteries or do other maintenance to my system , nonetheless which of the two disconnects will I need ?

BB.

I am not a big fan of those rotary DC bus switches... They can overheat and fail--And are not really good for switching under load (you want a "snap action" to prevent arcing as the switch is thrown).

I would suggest a standard, high amperage, circuit breaker. Gives you both the safety of the breaker and a free "on/off" switch.

Also, I would not switch off charging sources unless you need to service the wiring... Better just to keep them connected as designed. You should be able to keep the inverter up and running too during normal water/SG checks.

-Bill