Blue Sea 3000 500A Battery Selector 4 Position Switch with Alternator Field DisconnectModel: 3003-BSSFeatures:Tin-plated copper studs for maximum conductivity and corrosion resistanceAccepts up to 4/0 AWG battery cablesStuds accepts 1/2″ (M12) ring terminals7/8″ (22mm) stud length accepts multiple cable terminalsBlue Sea Systems one-piece terminal stud design never loosens over timeFits most Perko and Guest low amperage battery switch hole patternsCase design allows surface, rear, or front panel mounting optionsTactile indicator conveys knob position by feelWaterproof rated IP66 from water projected in powerful jetsIgnition protectedsafe for installation aboard gasoline powered boatsMake-before-break contact design allows switching between battery banks without power interruptionIncludes AFD (Alternator Field Disconnect)SpecificationsSwitch TypeSelector 4 PositionColorGreySwitch Positions4Battery CombineYesAlternator Field DisconnectYesMaximum Voltage32V DCTerminal Stud Torque220 in-lb (24.86 Nm)Continuous Rating500AIntermittent Rating700A (5 min)Cranking Rating 30 sec1600ABattery Inputs2Cable Clearance For 4/0 AWG Cables1.10in (27.94 mm)Cable Quantity to Meet RatingsTwo Cables / TerminalCable Size to Meet Ratings4/0 AWG (120mm )Mounting HolesAccept 1/4″” (M6) ScrewTerminal Stud Size1/2″ (M12)