Bussmann
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Bussmann (RB-BI-120A) 120 Amp Battery Isolator
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Bussmann (RB-BI-120A) 120 Amp Battery Isolator
A battery isolator enables each battery to act as an independent power source so that the main battery can conserve power even if the auxiliary battery is fully discharged.
Bussmann (RB-BI-120A) 120 Amp Battery Isolator
Item #: 100396958

Bussmann (RB-BI-120A) 120 Amp Battery Isolator

78% of respondents would recommend this to a friend

Item #: 100396958

LSL 2823

Price Details

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*All items will import from US

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Only 2 items left in stock.
Order now and get it around Thursday, October 08
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A battery isolator enables each battery to act as an independent power source so that the main battery can conserve power even if the auxiliary battery is fully discharged.
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

High Amperage
The 120 Amp capacity efficiently manages power flow, making it ideal for high-performance vehicles and marine applications, ensuring reliability during demanding operations.
Compact Design
The compact and lightweight design enables easy installation in tight spaces, providing flexibility for users and maximizing vehicle or boat interior space.
Enhanced Durability
Constructed with high-quality materials, this battery isolator offers exceptional resistance to harsh conditions, ensuring long-lasting performance and reducing maintenance needs for users.

Product Details

Shop Bussmann (RB-BI-120A) 120 Amp Battery Isolator online at a best price in Lesotho. B00L5TDHM8

Dangerous Goods

To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.

Product Technical Details

Manufacturer‎Bussmann
Brand‎Bussmann
Model‎RB-BI-120A
Item Weight‎2.65 pounds
Product Dimensions‎6.75 x 4.88 x 3.44 inches
Item model number‎RB-BI-120A
Manufacturer Part Number‎RB-BI-120A

What's in the box

Item

Who Should Buy?

Suitable For
  • Heavy-Duty Vehicles

    Ideal for trucks and buses needing reliable battery management for multiple battery systems under high load.

  • Marine Applications

    Perfect for boats requiring efficient battery isolators to protect against corrosion and manage dual battery systems.

  • Off-Road Enthusiasts

    Great for off-road vehicles needing a robust isolator to manage power demands in rugged conditions.

Not Suitable For
  • Light-Duty Cars

    Not suitable for standard cars that typically don’t require high-amp battery isolators for operation.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the purpose of the Bussmann (RB-BI-120A) 120 Amp Battery Isolator?

    Answer: The Bussmann (RB-BI-120A) 120 Amp Battery Isolator serves to disconnect the battery from the electrical system when not in use. This prevents battery drain and ensures that your vehicle's electrical systems remain powered only when needed. It's ideal for recreational vehicles, marine applications, or any system that requires effective battery management, allowing users to isolate multiple battery banks without manual switching.
  • Question: What electrical systems can the Bussmann battery isolator support?

    Answer: The Bussmann (RB-BI-120A) is capable of supporting various electrical systems, including those in RVs, boats, and auxiliary battery setups. With a load capacity of 120 Amps, it's perfect for high-demand applications where multiple batteries are employed, ensuring that all batteries are charged efficiently and can be easily isolated to manage power across different devices.
  • Question: How do I install the Bussmann (RB-BI-120A) Battery Isolator?

    Answer: Installation of the Bussmann (RB-BI-120A) Battery Isolator involves connecting the isolator between the battery and the electrical loads. Ensure the terminals are securely attached, and follow basic wiring practices to achieve a successful setup. Proper installation allows for reliable disconnection of the battery when necessary, facilitating maintenance or safety during downtime.
  • Question: Can I use the Bussmann battery isolator with multiple batteries?

    Answer: Yes, the Bussmann (RB-BI-120A) Battery Isolator is designed for use with multiple batteries, enabling efficient power management. This feature is especially valuable in setups with starting batteries and deep-cycle batteries in RVs or boats. The isolator ensures that the starter battery remains powered while allowing other batteries to charge and discharge freely.
  • Question: What are the benefits of using a battery isolator?

    Answer: Using a battery isolator like Bussmann (RB-BI-120A) offers multiple advantages including preventing battery drain, enhancing the lifespan of your batteries, and maintaining efficient power management across your vehicle or electrical system. It provides peace of mind knowing that your primary starting battery remains healthy while auxiliary batteries can be utilized for accessories without risk.
  • Question: Is the Bussmann battery isolator waterproof?

    Answer: While the Bussmann (RB-BI-120A) Battery Isolator is designed for outdoor applications, it is not fully waterproof. It is recommended to mount it in a location protected from direct exposure to water. Ensuring that the isolator is installed in a dry and secure area will help maintain its operational integrity and longevity.
  • Question: What kind of maintenance does the Bussmann isolator require?

    Answer: The Bussmann (RB-BI-120A) Battery Isolator requires minimal maintenance; however, periodic checks for corrosion or loose connections are recommended. Ensuring that the isolator's terminals are clean and securely connected enhances reliability. Regular inspections ensure optimal performance, especially in environments subject to vibrations or harsh weather.
  • Question: Can a Bussmann battery isolator improve battery performance?

    Answer: Yes, a Bussmann (RB-BI-120A) Battery Isolator can enhance battery performance by preventing over-discharge and maintaining optimal charging conditions. With efficient battery management, users can experience longer battery life and improved efficiency in power delivery to electrical devices, making it especially beneficial in applications such as recreational vehicles and marine environments.
  • Question: What is the maximum amp rating of the Bussmann isolator?

    Answer: The Bussmann (RB-BI-120A) Battery Isolator has a maximum current rating of 120 Amps. This makes it suitable for a wide range of applications requiring significant power management. It's essential for ensuring that the isolator is suitable for your specific needs, especially when operating high-demand electrical devices in your setup.
  • Question: Where can I buy Bussmann (RB-BI-120A) 120 Amp Battery Isolator?

    Answer: You can buy the Bussmann (RB-BI-120A) 120 Amp Battery Isolator from Ubuy in Lesotho. Ubuy provides a reliable online shopping platform with a wide selection of automotive accessories, ensuring a smooth purchasing experience for your needs.

Bussmann Batteries ‎RB-BI-120A Editorial Review

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Customer Reviews & Ratings

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Pros

  • High current handling capacity
  • Compact and lightweight design
  • Durable construction materials
  • Easy installation process
  • Enhances battery lifespan

Cons

  • Limited instruction clarity

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4.2/5 9477 reviews
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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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Adele
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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LSL 2823

Order now and get it around Thursday, October 08

QTY:

Only 2 items left in stock.
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Features & Benefits

  • Prevents battery drain by acting as a check valve.
  • Allows batteries to function as independent power sources.
  • Conserves the main battery's power effectively.
  • Prioritizes charging to ensure the main battery is always full.
  • Designed by Sure Power, a leader in battery isolators.
  • Exceeds OEM specifications for superior performance.

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