Feature: 1. Single Circuit On Off Switch: Switch a single battery to a single load group, and the make before break contact design allows switching between battery groups without interrupting power. 2. IP66 Waterproof and Applicable Engine: The battery power off switch is highly waterproof with ignition protection and can be safely installed on gasoline powered boats. 300 amp continuous rating is fit for outboard and small petrol or diesel engines. 3. Accommodable Terminals: Stud accepts 3/8in (M10) ring terminals, stud length accepts multiple cable terminals, and mounting holes accept M10 screws. 4. Durable Material and Construction: Tinned copper studs provide maximum electrical conductivity and rust resistance, and the integrated terminal design does not loosen over time, ensuring its long term stability. 5. Multiple Mounting Methods: The power off switch housing design allows surface, rear panel, or front panel mounting options, providing a variety of options. Specification: Item Type: Marine Battery SwitchSwitch Position: 2 (Off On) Max Voltage: 48v Dc Continuous Rating: 300a Intermittent Rating: 500a (5 Min) Start Rated 30 Seconds: 900a per Way Stud Material: Tinned Copper Mounting Holes: Accept M10 Screws Function: Switch a Single Battery to a Single Load Group, And the Make Before Break Contact Design Allows Switching Between Battery Groups Without Interrupting Power Application: Ideal for Marine or Rv Applications. Package List: 1 x Power off Switch 4 x Screw