Isolator Switch 10mm Stud 12V Universal 500A Rated Waterproof Power Knob Switch Secure for Car Boat RV Power Cutoff Switch designed for use with 12V electrical systems.Suitable for a wide range of vehicles and marine applications including RVs, yachts, trucks, automobiles, and engineering vehicles.The switch provides a means to disconnect the when the vehicle or vessel is not in use, helping to prevent unwanted drain and enhancing. Constructed with zinc and copper materials, the switch features a heavy-duty metal case that offers strong resistance to weather conditions, protecting internal components in demanding environments.Designed with a stud size of approximately 10mm (0.39in), it supports a rated continuous current of 500A and can handle an instantaneous current of up to 5000A at 12 volts.The waterproof design stable performance even in wet or humid conditions. Includes one disconnect switch, one knob, one nut, one gasket, and two pins for installation.The switch is engineered to securely isolate power and support safe maintenance or long-term storage of. This product is an aftermarket solution.Brand names are mentioned only to clarify compatibility with specific models.