![ARCO Marine BI-1203-3A Battery Isolator - 120A - 1 Alternator, 3 Battery [BI-1203-3A] Superwinch Only a few sizes are](https://cdn.shopify.com/s/files/1/0559/6581/0858/files/106601XL.jpg?v=1731502566)
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ARCO Marine BI-1203-3A Battery Isolator - 120A - 1 Alternator, 3 Battery [BI-1203-3A] Superwinch Only a few sizes areBI 1203 3A Battery Isolator 120A 1 Alternator, 3 Battery The Arco Marine BI 1203 3A is an inboard outboard battery isolator that can handle 1 alternator, 3 batteries, and 120A max. Rated for use with 10 to 350 amp alternators on 12, 24, or 32 volt negative ground systems. *Includes exciter terminal Features: 1 alternator, 3 batteries, 120A max Inboard and outboard battery isolators are solid state devices that allow electrical current to flow in one
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