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BI-0702 - Isolator

Arco Marine BI-0702 - Isolator

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Part Number

Arco Marine

ARCO Original Equipment Quality Battery Isolator - BI-0702
ARCO Part #BI-0702

Rated for use with 10 to 350 amp alternators on 12, 24, or 32 volt negative ground systems.

NOTE: Battery Isolators cannot be used on 12 volt charging systems with 24 volt trolling motors or newer outboard engines with rectifier-regulator charging systems.

1 Alternator, 2 Batteries. 70 Amp max
INBOARD AND OUTBOARD BATTERY ISOLATORS are solid-state devices which allow electrical current to flow in one direction ONLY, thus permitting the alternator to be connected directly to two batteries without fear of one higher charged battery discharging into the lower charged battery. Both batteries are always being charged automatically, in proportion, to their needs whenever the engine is running. When battery isolators are used in conjunction with selector switches, it is not necessary to change the switch position to provide for charging of both batteries. Isolators provide proportioning of the output or charging current on the alternator to the batteries as required, regardless of switch position.


ARCO Marine is a USA based manufacturer

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Arco Marine Isolator Bi-0702 is equivalent to parts:

  • 873120 Volvo Penta
ARCO is a leading supplier of electrical products for marine engines including inboard/outboard starters, trim/tilt motors, alternators, solenoids, rectifiers and more. All of ARCO's parts are built to meet or exceed OEM qualifications.

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