MisterSandals
Participation Medalist
Ok you're good to connect a 250W panel (22V 6.87A from series connection) to each of those MC4 inputs.It comes with 15A fuse installed in it!
2x 250W per combiner box. Output to an SCC.
The green breaker is your solar cutoff switch.
No its probably just fine. Does it look fine (no swelling and holds a voltage same as the others?).and I might have possibly damaged it due to the above