Lots of battery disconnect switches do not have the amperage capacity to handle starter current. Unless you use a disconnect with at least a 500 amp rating, it will burn out quickly, and a 1K amp switch is better. The average low cost disconnect only has a 100 amp rating.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!