m-Series Mini Dual Circuit Plus Battery Switch - BlackSimultaneously switches two isolated battery banks or combines battery banks to all loads. Make before break contact design allows switching between battery banks without power interruption.Switch Type: tDual Circuit PlusColor:tBlackSwitch Positions:t3Battery Combine:tYesAlternator Field Disconnect: tNoMaximum Voltage:t32V DCContinuous Rating :t300AIntermittent Rating :t450A (5 min)Cranking Rating 10 sec: t1000ACranking Rating 1 min: t650ABattery Inputs:t2Cable Clearance For 4/0 AWG Cables:t1.12in (28.45 mm)Cable Size to Meet Ratings:t4/0 AWG (120mm^2)Mounting Holes: tAccept #10 ScrewTerminal Stud Size:t3/8"-16 (M10)Terminal Stud Torque:t120 in-lb (13.56 Nm)Weight:t0.80lb (0.36 kg)WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications: AFD: No Positions: 3 Continuous Amperage: 300a Box Dimensions: 3"H x 4"W x 7"L WT: 0.6 lbs UPC: 632085601126 Owner&';s Manual (pdf)