9.1kW was fed into grid on L1.
Some time later, another 8.5kW was fed into grid on L1 and also 7.5kW was fed into grid on L2.
CB on L1 tripped, CB on L2 survived.
OS v3.60-25.
Max grid amperage setting 25A (per phase) (= max 5.8kW)
No settings changed recently. All devices latest firmwares.
6xMP2/48/5000 (2 per phase).