Battery / cutoff switch??

[Eman]

I'm thinking 75amps is the rating of the panel with all circuits combined. I'm guessing you're not using relays on anything and the switch panel has fuses and they are carrying the total loads. I wouldn't want a panel that's lit up when the car is off but I guess that's how it's made.
If you want to shut it down you can do as Alan Nyhus stated or use a continuous duty solenoid/relay. Cole Hersee makes quality solenoids and switches.