Features 1. Main Purpose: Switches isolated battery banks to all loads or combines battery banks to all loads, including AFD (Alternator Field Disconnect). 2. Product Features: Make before break contact design enables switching between battery banks without power interruption, offering ignition protection. 3. Easy Installation: Case design allows for surface or rear panel mounting, featuring a compact structure for simple and secure installation on gasoline-powered boats. 4. Standard Size: Equipped with 3/8in16 studs, compatible with 3/8in and M10 ring terminals, and 7/8in (22.22mm) stud length to accommodate various cable terminals. 5. Wide Application: The battery power off switch boasts excellent practicality and high reliability, suitable for marine boats, RVs, large trucks, modified vehicles, etc. Specification Item Type: Battery Disconnect Switch Material: ABS Plastic Shell, Tinned Copper Gear Position: OFF-1-2-1+2 Continuous Rating: 350A Intermittent Rating: 600A (5 minutes) Startup Rating For 30 Seconds: 1200A Waterproof Grade: IP66 Binding Post: 3pcs M10 Terminal Size: 3/8in-16 (10M) Post Length: 7/8in (22.22mm), accommodates multiple cable terminals Application: Make before break contact design allows switching between battery packs without interrupting power Applicable: Suitable for marine boats, RVs, large trucks, modified vehicles Package List 1x Battery Disconnect Switch 4 x Fixing Screws