Feature: 1. Dual Circuit Switch: Battery switch switches two isolated battery packs (not included) simultaneously without interrupting power. 2. Ignition Protection: IP66 waterproof for safe installation on gasoline powered boats; 300 amp continuous rating for outboards and small gasoline or diesel engines. 3. Tinned Copper Studs: Good conductivity, studs accept 3/8in (M10) ring terminals, 7/8in (22 mm) stud lengths accept multiple cable terminations. 4. Easy Installation: The isolation cover protects the rear contacts, and the breakout tabs allow wire access in any direction. Enclosure design allows for surface, rear panel or front panel mounting. 5. Wide Application: Widely used in cars, ships, RVs, campers, travel trailers, trucks, ATVs, UTVs, battery packs and other equipment. Specification: Item Type: Battery switch Material: ABS, nickel plated copper Battery Combination: None Alternator Field Disconnect: No Maximum Voltage: 32V DC Stud Size: 3/8in Continuous Rating: 300A Intermittent Rating: 450A (5 min) Startup Rating For 30 Seconds: 675A per circuit Battery Input: 2 Mounting Holes: Accept M10 screws Stud Material: Tinned Copper Terminal Size: 3/8in- 16 (M10) Function: Switch two isolated battery packs simultaneously Fitment: Ideal for marine or RV applications . Package List: 1 x Battery Switch4 x Screw