Features 1.Main Purpose: Switches isolated battery banks to all loads or combines battery banks to all loads, and includes AFD (Alternator Field Disconnect). 2.Product Features: Make before break contact design allows switching between battery banks without power interruption, which has ignition protection. 3.Easy Installation: Case design allows surface or rear panel mounting, with compact structure for easy and safe installation on gasoline powered boats. 4.Standard Size: With 3/8in16 studs, which accepts 3/8in and M10 ring terminals, and 7/8in (22.22mm) stud length to accept multiple cable terminals. 5.Wide Application: The battery power off switch has good practicability and high reliability, suitable for marine boat RV, large trucks, modified cars, etc. Specification Item Type: Battery Disconnect SwitchMaterial: ABS Plastic Shell, Tinned CopperGear Position: OFF-1-2-1+2Continuous Rating: 350AIntermittent Rating: 600A (5 minutes)Startup Rating For 30 Seconds: 1200AWaterproof Grade: IP66Binding Post: 3pcs M10Terminal Size: 3/8in-16 (10M)Post Length: 7/8in (22.22mm), accommodates multiple cable terminalsApplication: Make before break contact design allows switching between battery packs without interrupting powerApplicable: Suitable for Marine Boat RV, large truck, modified car Package List 1x Battery Disconnect Switch4 x Fixing Screws