Blue Sea 500A HD-Series Heavy Duty 4 Position (OFF/1/2/1+2) Battery Selector Switch w/ AFD New This advanced internal structure not

This advanced internal structure not only eliminates the risk of leaks and spills but also provides exceptional protection against plate damage caused by vibration and deep discharge cycles

such as a start battery and a house bank

At its core

The mounting face is designed to be gasketed or bedded with sealant

Blue Sea 500A HD-Series Heavy Duty 4 Position (OFF/1/2/1+2) Battery Selector Switch w/ AFD New This advanced internal structure notConfident control of dual battery banks for marine and RV power Managing multiple battery banks on a boat, 4WD or caravan often means balancing two priorities: keeping critical loads powered and protecting your charging system. The Blue Sea HD Series 4 position battery selector switch with AFD is built for high current installations where dependable changeover and battery isolation matter. It gives you clear, manual control to run from Battery 1,