Im planning a new installation onboard; 12v system 4x400Ah Winston cells and REC BMS 4 with a Multiplus 12/1600/70 inverter charger, monitored with a Cerbo GX. The invcharger is to be connected to batteries unswitched - Here is the the problem; REC BMS wants a protection/isolation switch between the battery and Invcharger. See attached picture from REC BMS4 manual.
My question; Can we skip the encircled breakersolenoid, getting a straight unswitched connection and instead just shutdown the inverter appropriately on a REC BMS signal when cellprotection/isolation is needed? Either over the VECAN / Cerbo GX or physical relay on the REC BMS ?
Best regards, Fredrik