The fuse in the breaker is appropriately sized to protect the sockets. Simply putting in a new one wouldn't change the capability/rating of the sockets themselsves.
There is also a fuse inline in the harness, as shown in the photo of the harness, seen below. This photo also shows what the connectors look like on both ends.
https://www.genesisoffroad.com/assets/images/171-12v-4.jpg