I am trying to figure out what is the correct circuit breaker size to use for the installation of my Orion DC - DC 24/24 -17. I am using 10mm2 cable from the Orion to input (van batteries), 6mm2 from Lynx distributor to Orion.

Calculations using the formula: **Current (Amps) = Power (Watts) / Voltage (Volt) **suggests a minimum 25 amp circuit breaker, therefore I consider a 30amp.

However, I have read in another post, that I may use a 40amp Mega fuse in my lynx distributor (as that is the smallest mega fuse available), does this also mean I should use a 40 amp circuit breaker as well?

Any help, much appreciated