Click to enlargeNewmar 1-2-120 Battery Isolator
Manufacturer: Newmar PowerPart #: 1-2-120SKU: 102292
- 48V
- 3 lb
- Aluminum
Item #: 102292
Category: Battery Isolators
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Description
1-2-120 Battery Isolator This heavy-duty isolator allows multiple batteries to charge automatically from one or two alternators and prevents the discharge or ‘dumping” of one battery into another. Each battery is charged according to its need without overcharging and is rated for 12-, 24-, or 36-volt, negative ground DC systems.
This model is a 120-amp alternator. Features: Conservatively rated diodes and a rustproof anodized aluminum heat sink case Heavy duty construction Rated for systems up to 48 volts DC, negative ground Rust-proof anodized aluminum case Stainless steel mounting hardware provided Protective covers provided for terminals Specifications: Operating Temperature: -40 to +80° Duty Cycle: Continuous rating to 50° C Derate linearly to 70% @ 80° C Temp.
Rise: 5° C at full rated current (mount vertically for optimum cooling) Voltage Drop: 0. 7V @ 50% load, 0.
9V @ full load Alternator Sources: 1 Battery Bank: 2 Max. Amperage Input Capacity: 120 Stud Terminal Size: 6mm Dimensions (L x W x H): 6.
5" x 4. 5" x 3.
1" Weight: 3 lbs. Note : These battery isolators are not compatible with self-exciting alternators.
The alternator must have an external excitation lead. Please consult the manufacturer of your alternator if you are unsure of your configuration
Specifications
| Brand | Newmar Power |
|---|---|
| Part Number | 1-2-120 |
| EverTide SKU | 102292 |
| Voltage | 48 V |
| Material | Aluminum |
Specifications are provided by the manufacturer. Confirm fitment for your application before ordering, or contact us and we'll help.
Compare similar products
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|---|---|---|---|---|
| Voltage | 48 V | 48 V | 48 V | 48 V |
| Material | Aluminum | Aluminum | Aluminum | Aluminum |
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Returns & warranty
Returns are accepted within 30 dayson items that are unused and in their original packaging. Some items may be subject to a manufacturer restocking fee. Special-order items may not be eligible — if you're unsure, ask us before ordering.
Newmar Power productscarry the manufacturer's standard warranty. For a warranty claim or a return authorization, see our full returns policy or contact us.
Electrical — frequently asked
- What’s the difference between marine wire and regular wire?
- Marine wire uses tinned (tin-coated) copper strands that resist the corrosion salt air causes, and it’s more finely stranded so it flexes with vibration without breaking. Standard automotive or household wire corrodes and fails much faster in a marine environment.
- How do I size a fuse for a marine circuit?
- Size the fuse to protect the wire, not just the device. Match the fuse rating to the wire gauge’s safe current capacity so the fuse blows before the wire overheats. When adding a new circuit, follow the wire manufacturer’s ampacity chart for the gauge and run length you’re using.
- Do I need a battery switch on my boat?
- A marine battery switch is strongly recommended. It lets you disconnect the battery for storage or service, isolate a failed battery, and — on multi-battery setups — choose which bank powers the boat. It’s a core safety and reliability component.
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