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Selecting battery disconnect with proper amp rating???


Well-Known Member
How do I determine the correct amp rating for my battery disconnect swicth?

My vehicle has either a 135 A or 200 A alternator (I have to verify which), but most of the switches I see are rated for 175 A (battery terminal) and 125 A (alternator terminals. . .they are 4-terminal disconnects).

Given our electrical loads I do not expect to ever have a 200 A draw. . .I need a manual disconnect (rotary) with 4-terminals (alternator) by my series rules.

Thanks for the help!