Victron 100/50 smart fuse tripping

Hi my first post i have a victron smart charge controller 10/50 3 solar panels 30 amp total square breaker 60 amp keeps tripping from controller to batteries on a 24volt system fyi i changed the fuses it runs fine on 2 panels

A lot of the cheap no name breakers are very low quality and trip below rated current, Youtube has many cases as well as repeatedly being raised on here. Only use reputable brands such as Blue Sea.