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 3/8in‑16 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 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 Boat RV, large truck, modified car Package List 1x Battery Disconnect Switch 4 x Fixing Screws