Feature:1. Application: Ideal for marine or RV applications, molded in durable ABS, tactile textures indicate knob with international ON OFF marks, and removable key or knob remains positively retained.2. Function: This is a dual circuit plus switch, simultaneously switches two isolated battery banks or combines battery banks to all loads.3. Ignition Protected: Safe for installation aboard gasoline powered boats, case design allows surface, front panel, or rear panel mounting.4. Good Conductivity: Isolating cover with snap on sections protects rear contacts 3/8in16 tin plated copper studs for maximum conductivity, accepts 3/8in/0.95cm and M10 ring terminals 7/8in / 22.22mm.5. Safe to Use: Make before break contact design allows switching between battery banks without power interruption.Specification:Item Type: Battery SwitchMaterial: ABS+CopperContinuous Working Current: 300AMaximum Working Current: 450A (5min), 675A (30s)Maximum Working Voltage: 32V DCTerminal Size: M10Inner Stud: Copper Plated With SilverFunction: Make before break contact design allows switching between battery banks without power interruption.Application: Ideal for marine or RV applications.Package List:1 xBattery Switch