Features: 1.3 LEVELS: The selector has 3 positions. Switch a single battery to a single load bank. Includes AFD(Alternator Field Disconnect) 2.SWITCHABLE BATTERY PACKS: Make before break contact design allows switching between battery packs without interrupting power 3.FLEXIBLE MOUNTING: Enclosure design allows for surface or rear panel mounting, ignition protection safety on gasoline powered boats 4.STUD SIZE: 3/8in?16 tinned copper studs has maximum conductivity and corrosion resistance, accept 3/8in and M10 ring terminals. 7/8in(22.22mm) stud length can accommodate multiple cable terminals 5.WIDE APPLICATION: Tactile texture indicates knob position by feel only, ideal for marine or RV applications Specification: Item Type: Battery Disconnect Switch_x000D_ Continuous Rating: 350A_x000D_ Intermittent Rating: 600A (5 minutes)_x000D_ Startup Rating For 30 Seconds: 1200A_x000D_ Maximum Working Voltage: 32VDC_x000D_ Terminal Size: 3/8in - 16 (M10)_x000D_ Protection Class: IP66_x000D_ Switch Level: OFF-1-2_x000D_ Material: ABS_x000D_ Female Stud: Tinned copper_x000D_ Function: Make before break contact design allows switching between battery packs without interrupting power_x000D_ Application: Ideal for marine or RV applications PackageList: 1 x Battery Disconnect Switch 4 x Screw