1、Safety Protection: Marine battery disconnect switch can disconnects the battery safely, to eliminate any power draw from the battery when vehicle or boat is not in use. 2、Sturdy Construction: It has compact size and solid housing to resist the harsh marine conditions. And the rear cover insulates terminals against any short of circuits. 3、Compatible: It is used for DC 12‑48V systems to isolate and secure the electrical system, which can stand alone or be locked together with other switch.Its purpose is to eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely. 4、Wide Application: Battery isolator disconnect switch is universally used not only for car, van, caravan, RV, truck, marine boat, but also electrical equipment's switch, such as flashing light, chassis light, fog light, dome light. 5、Easy to Install: This battery disconnect switch is easy and convenient for you to install and remove, which requires no complicated operation. Item Type: Battery Disconnect Switch Material: ABS, Metal Continuous Current: 275Amps DC Intermittent Current: 455Amps DC Starting Current: 1250Amps DC Dielectric Strength: 1500VAC/1min Application: for Boat, Car, RV, ATV, UTV, Vehicles 1 x Battery Disconnect Switch 10 x Screw 10 x Nut 8 x Gasket 1 x Iron Sheet 1 x Wrench 1 x L shaped wrench 1 x Instruction