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Thanks! I've posted a new thread. Unfortunately, it only shows the charging and discharging limit which is just a multiple of the 37 amps. I had a closer look at the MCB when the installer came to inspect it earlier today. It is a DC MCB and rated at 125A.

Interesting set up with the fans! It is hotter where I am and the Solis model that I have has a fan kicks off when at higher currents. Will start with getting telemetry through Solarman and HomeAssistant. Still waiting for my installer to replace the MCB. On another note, I've asked him to look...

My top choice right now is a combiner box containing a MCCB with a bus bar having terminals for lugs. I saw a block distribution box which has a more secure cover but it didn't say how much current it's rated for. Options are limited where I am, having issues finding longer 4 AWG cables crimped...

The installer got back to me with a DC polarized MCB and the original cable returned. Will be giving it another try with 125A. Confirming that the cable is 4 AWG.

I have the same set up - 4 units of US3000C in parallel. In between the master battery and the inverter is a 100A MCB. Recently, I've lowered my consumption profile resulting in charging current to go up at peak time. It seems to peak at 3.5kW when it gets too hot and the MCB trips. A portion of...

My set up is a Solis hybrid inverter with 4 units of US3000C in parallel. In between the master battery and the inverter is a 125A MCB (Suntree SCB-125DC). Recently, the MCB has been tripping and heats up from 3 to 3.5kW or higher. A portion of the cable close to the MCB is hot while the rest...