Ignitions and Electrical› Charging Systems

BUSSMANN

BATT ISOLATOR 120A CS DUAL

$169.79

SKU: B03L RB-BI-120A

In Stock
In Stock
Ships by Jun 15
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Non-Returnable Item

Description

The Bussmann RB-BI-120A is a 120 Amp battery isolator designed to prevent auxiliary batteries from draining the main battery power. This solid-state device isolates each battery circuit, extending overall battery life.

It operates by allowing a single alternator to charge multiple batteries while ensuring they function independently. The unit does not include a fuse or solenoid, and it comes with a wiring kit.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandBUSSMANN
Part NumberB03L RB-BI-120A

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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