FUNCTION: This M-Series Battery Switch with On/Off position acts as a power cut off, eliminating any power drain from the battery pack. Disconnect the batteries safely when the vehicle or boat is not in use. Wide Compatibility: The marine battery switch is usually used with the battery box, fuse block which can isolate and protect the electrical system. This battery switch is widely applied to marine, boat, yacht, car, RV, camper, travel trailer, truck, ATV, UTV, etc. When your RV, boat or car is not in use, the power switch can safely disconnect the battery power, reducing the additional loss of battery power and extending the battery life Ignition Protected: Cranking: 900A for 30 seconds, 500A for minutes; Continuous Rating: 300A; Maximum Voltage: 48V DC. Our battery disconnect switch can prevent current fluctuations during ignition, which makes your use more safe and reliable Ideal Power Switch: With tinned copper inner studs, the boat battery switch has better contact performance and good conductivity, greatly reducing power consumption.Furthermore, the housing of battery kill switch is made of flame-retardant plastic for safer use in messy or moist environment Easy to Install: Our marine battery switch is designed for surface, front panel or rear panel mounting, you can choose anyone according to your needs, our package is also equipped with stainless steel mounting screws