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Stress-free Newmar 1-3-120a Isolator 1ait 3batt 120amp Christmas Gift Special [o1JUBXDM]

$53.99 $172.99 -69%

Newmar 1-3-120a Isolator for Efficient Battery Management The Newmar 1-3-120a Isolator is a top-tier solution for managing your battery system, designed to ensure optimal performance and longevity. This heavy-duty isolator is engineered to charge mul

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Stress-free Newmar 1-3-120a Isolator 1ait 3batt 120amp Christmas Gift Special [o1JUBXDM]

Newmar 1-3-120a Isolator for Efficient Battery Management

The Newmar 1-3-120a Isolator is a top-tier solution for managing your battery system, designed to ensure optimal performance and longevity. This heavy-duty isolator is engineered to charge multiple batteries automatically from one or two alternators, preventing any unnecessary discharge or 'dumping' from one battery into another. With its robust construction and advanced features, it is an essential component for 12-48 volt negative ground DC systems.

Key Features and Specifications

The Newmar 1-3-120a Isolator stands out with its conservatively rated diodes and a rustproof anodized aluminum heat sink case, which not only enhances its durability but also ensures efficient heat dissipation. This isolator is available in models that cater to different alternator ratings, including 70, 120, and 165 amp models, making it a versatile choice for various applications. Key features include:

  • Heavy-duty construction for long-lasting performance
  • Rated for systems up to 48 volts DC, negative ground for compatibility with a wide range of systems
  • Rust-proof anodized aluminum case for durability and resistance to environmental factors
  • Stainless steel mounting hardware provided for secure installation
  • Protective covers provided for terminals to prevent accidental shorts or damage

Performance and Safety Considerations

This isolator is designed with performance and safety in mind. It operates within a wide temperature range of -40° to +80° C, ensuring reliable performance in various conditions. The duty cycle is continuous rating to 50° C, derating linearly to 70% at 80° C, ensuring that it can handle heavy loads without overheating. The Newmar 1-3-120a Isolator also features a low voltage drop, which helps to maintain battery health and efficiency. Additionally, it is important to note that these battery isolators are not compatible with self-exciting alternators. For any uncertainty regarding your alternator configuration, please consult the manufacturer.

What Our Customers Say

January 17, 2026

Absolutely no complaints!

It's a very well-engineered product with no flaws.

- Danielle Y..

January 17, 2026

Absolutely no complaints!

This product is a superb choice for its performance and price.

- Marcelo J..

January 17, 2026

Absolutely no complaints!

The quality is superb and the performance is outstanding.

- Scout T..

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