What type of connector to a 45 amp battery cable can I install to prevent arc flash?
Also anyone have a clamp connection suggestion for this level of power to reconnect a cut wire instead of solder.
You cannot prevent arc flash only limit the effects.....depends what load current you are looking at as to whether or not any arc barrier contactor or solid state switcher is necessary.
I don't think your concerned with Arc flash unless your talking about a battery bank with voltages exceeding 100v.
Short circuit protection? Perhaps a fuse or fusable link.
Compression lugs covered with shrink tubing are ideal for many applications.