Blue Sea Systems e-Series Selector Battery Switch w AFD Switches isolated battery banks to all loads or combines battery banks to all loads Includes AFD Alternator Field Disconnect Make-before-break contact design allows switching between battery banks without power interruption Ignition protectedsafe for installation aboard gasoline powered boats Case design allows surface or rear panel mounting Specifications Switch Type Selector 4 Position Color Red Switch Positions 4 Battery Combine Yes Alte