Prevents Power Leakage: Eliminates the drain of power from the battery when the vehicle or boat is not in use, safely disconnects the battery. Widely used in cars, vehicles, RVs and boats, as well as switches for electrical equipment Compatibility: It is compatible with GM side post batteries or other batteries with 3/8inch lug terminals, also used for electrical equipment, can be used alone or locked together with other switches Specifications: Suitable for DC 12-48V systems, ON/OFF 2 positions, continuous 275A at DC 12V, intermittent 455A at DC 12V, instantaneous 1250A at DC 12 V Enduring: ABS plastic housing, enduring and safe to use. Equipped with 2 SAE 3/8inch-16 bolts, compatible with standard GM side post batteries. Using a post adapter, you can extend the side post battery to a standard top post negative: 17mm tapered/tapered negative (-) Easy to Install: it can be installed directly without modification, connects directly to the side post batteries without additional battery cables or lugs, easily isolates and secures the electrical system