[WIDE APPLICATION]Greatly applicable for RV, travel trailer, marine, boat, camper, truck, ATV, UTV, etc. [FUNCTION]This M-Series Battery Switch with On/Off position acts as a power cut off, eliminating any power drain from the battery pack. Disconnect the batteries safely when the vehicle or boat is not in use. [DESIGN]Make-before-break contact design allows switching between battery banks without power interruption. [ABOUT MOUNTING]This battery switch can be safely mounted on gasoline powered boats, the chassis design allows for surface, front panel or rear panel mounting, Isolating cover with snap-on sections protects rear contacts. [Safety]Our marine battery switch is one-piece terminal stud design never loosens over time [Terminal Stud Torque]120 in-lb (13.56 Nm) [Cable Clearance For 4/0 AWG Cables]1.12in (28.45 mm) [Cable Size to Meet Ratings]4/0 AWG (120mm²) [Stud Material]Tinned Copper [Stud Torque]120 in-lb (13.56 Nm) [Terminal Stud Size]3/8inch - 16 (M10) [Waterproof level]IP66 type:A: Single Circuit/B: Selector 3 Position/C:Selector 4 Position Colour:white+red Material:plastic+brass Package Contents: 1 x Switches 4 x Screw Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.