The link to Cabellas shows the type that I have that can be manually disconnected. Under you may also like, far right. Shows a 70 amp but they come in different amperage. Press the center button and the lever on the bottom pops out. Push the lever back to reset. On mine, these are used to protect the larger loads such as slide and hyd motors.
2006 Gulfstream Friendship G7, Cat C7 and Allison 6 spd
Honda VTX and Cruiser Lift on the back
Blue Ox Aladdin, Brake Buddy, 2019 Chevy Blazer RS toad