Premium Quality,DurableThis 50A Battery Switch Made of premium ABS and metal,the 12V-48V battery disconnect switch is sturdy,aging resistant and abrasion resistant to ensure maximum strength and durability for long lasting use.Waterproof Protective CoverThis waterproof Battery Disconnect Switch is designed with a waterproof cover on the top to better protect the key hole. Professional features,high reliability. Compact size,sleek modern appearance,easy to install.Safely Disconnect BatteryThis Battery Isolator Switch can eliminate all battery power consumption when the vehicle or boat is not in use. not in use,safely disconnect the battery. 2 position: ON and OFF Battery Shut Off Switch They are offered as main car disconnect switches,rated 75 amps intermittent,50 amps continuous at max. 50V DC; Crank Rating: 300 Amps 5 Seconds; contact resistance: 50m ohm max. Insulation Resistance: DC 500V 100M ohm min.Wide Application Quality GuaranteeThe car battery isolator switch is perfect for cars,off-road vehicles,trucks,etc. trucks,motorcycles,boats,yachts,etc. Professional features,high reliability,100% tested before shipping to ensure product perfection,stability and durability.