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ARCO Marine Battery Isolator for 10-350A Alternators

MFG No: BI-1203-3A
SKU No: H44GTQ18JL
UPC: 693006007496
MFG. Name: ARCO Marine
Available: 3
Condition: New

$170.49


ARCO Marine Battery Isolator for 10-350A Alternators

The ARCO Marine Battery Isolator is designed to seamlessly manage the charging of up to 3 batteries from a single alternator. With a maximum rating of 120A, it is suitable for use with alternators ranging from 10 to 350 amps and works on 12, 24, or 32-volt negative ground systems.

This robust isolator includes an exciter terminal, ensuring efficiency and convenience in your battery management.

Important Note: This device is not suitable for use in 12-volt charging systems with 24-volt trolling motors or newer outboard engines equipped with rectifier-regulator charging systems.

Return Policy: Please be advised that this product cannot be returned to the original point of purchase. For any issues or concerns, directly contact the manufacturer.


  • Supports 1 alternator and up to 3 batteries with a maximum of 120A.
  • Allows for the safe flow of current in one direction, preventing battery discharge.
  • Automatically charges both batteries in proportion to their needs while the engine is running.
  • No need to change switch positions for battery charging when using isolators with selector switches.
  • Ensures proportioned output or charging current distribution to all connected batteries.

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ARCO Marine Battery Isolator for 10-350A Alternators

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