Terminal Battery Fuse Question

[aaronorange]

How should I fuse 3 lithionics 130ah batteries wired in parallel when connected to a 3000W Xantrex inverter? I was having issues with the 300a Optifuse. I was told to replace the Optifuse breaker with a Blue Seas disconnect switch. I’m apprehensive not having a fuse inline. Would a 300amp Blue Seas MRBF terminal fuse be sufficient? I currently use a 400amp under the street side bed. I also plan to add the Blue Seas disconnect ether under the SS bed or in the battery compartment. Thanks! 

Edited 3 hours ago by aaronorange

[mossemi]

@aaronorange  I am not sure what this 300A Optifuse is protecting, so without more information it may be difficult to get an answer.  Can you include some pictures?

Mossey