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Blue Sea 100A/50mV DC Shunt
Blue Sea 100A/50mV DC Shunt
Includes Insulated Mounting Base - 66A Continuous Rating for Ammeters
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$89.58
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DESCRIPTION
Precision DC Current Measurement for Marine and Off-Grid Power Systems
Accurately monitoring electrical loads and charging inputs is essential for maintaining the health and longevity of any 12V, 24V, or 48V battery bank. The Blue Sea 100A/50mV DC Shunt is engineered to provide precise current sensing when paired with digital or analogue DC ammeters and battery monitors. By creating a highly calibrated, low-resistance path in your circuit, this current shunt produces an exact millivolt voltage drop proportional to the current flowing through it. This allows your monitoring instruments to safely read heavy DC loads without routing thick, high-amperage battery cables directly behind your dashboard or control panel.
Engineered for Safety and Signal Accuracy
Inferior current sensing components often suffer from resistance drift caused by thermal expansion, leading to inaccurate state-of-charge readings and potential overheating at the connection points. The Blue Sea Systems 9230B shunt addresses these risks through superior metallurgical construction and intelligent design. It features solid brass terminal blocks that offer exceptional conductivity and corrosion resistance, making it highly dependable in harsh marine environments, humid tropics, and high-vibration 4WD or caravan installations.
The precision parallel metal strips form a resistive bridge that maintains calibration across varying load conditions. Furthermore, this unit comes pre-mounted on a moulded black plastic base. This integrated insulating base eliminates the risk of accidental short circuits against conductive vehicle chassis, metal enclosures, or marine bulkheads, significantly simplifying the installation process while enhancing overall electrical safety.
Key Features and Benefits
- Calibrated 50mV Output: Delivers a standard 50mV signal at 100A full scale, ensuring compatibility with a wide range of Blue Sea Systems meters and third-party DC ammeters.
- Integrated Insulated Base: Moulded black plastic mounting base isolates the live conductive blocks from the mounting surface, preventing dangerous ground faults.
- Heavy-Duty Brass Terminals: Robust load bolts securely clamp heavy-gauge battery lugs, minimising contact resistance and heat generation.
- Dedicated Sense Screws: Separate small screw terminals allow for secure, straightforward wiring of twisted-pair millivolt signal leads to your display unit.
- Safe Remote Monitoring: Keeps high-current cabling confined to the main battery compartment or distribution box, reducing voltage drop and fire hazards in the cabin.
System Sizing and Continuous Operation Guidance
To ensure optimal thermal performance and long-term measurement stability, industry best practice dictates de-rating current shunts for continuous loads. Under normal operating conditions, it is recommended not to run this shunt above two-thirds (66%) of its rated capacity. This gives the 100A shunt a practical continuous current rating of 66A, while still allowing it to accurately measure intermittent peak loads up to the full 100A limit. This sizing makes it an ideal match for small-to-medium auxiliary battery systems, solar charge controller outputs, or dedicated DC sub-panels.
Ideal Applications
- Marine Electrical Systems: Monitoring house battery banks, bilge pump draws, and alternator charging outputs on boats and yachts.
- Caravans and RVs: Tracking energy consumption from 12V appliances, lighting circuits, and solar charging setups.
- 4WD Dual Battery Setups: Keeping an eye on fridge draws, DC-DC charger inputs, and auxiliary accessories during remote off-grid travel.
- Industrial and Telecom Equipment: Providing reliable current feedback for backup power supplies and remote telemetry stations.
Upgrade Your Battery Monitoring System
Protect your battery investment and eliminate the guesswork from your power management setup. Equip your electrical system with the Blue Sea 100A/50mV DC Shunt today for dependable, accurate current measurement across all your off-grid and marine applications.
SKU: BS-9230B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Rated current | 100A |
| Rated millivolt drop | 50mV |
| Application | For use with DC ammeters |
| Continuous operation guidance | Recommended not to run shunts above two-thirds (66%) of rated current under normal conditions |
| SKU: | BS-9230B |
| Model #: | 9230 |
| MPN: | 9230 |
| Package weight: | 0.108 kg |
| Package length: | 0.1 m |
| Package width: | 0.05 m |
| Package height: | 0.05 m |
WARRANTY
Blue Sea Warranty Policy
Blue Sea Systems products sold by us are supplied with a warranty against defects for the warranty period shown below, subject to the product type, application and the terms of this warranty policy.
The express warranty provided by us is limited to a maximum of 5 years from the original date of purchase, unless otherwise required under Australian Consumer Law.
Blue Sea Systems may offer longer manufacturer support on some products at their discretion
Warranty Lengths by Product Range
| Blue Sea Product Range | Warranty Length | Application / Notes |
|---|---|---|
| Most Blue Sea Systems Products | 5 years | Applies to most Blue Sea Systems products found to be defective in materials or manufacture. |
| P12 Battery Chargers | 5 years | Warranty period starts from the original date of purchase. |
| P12 Remote Displays | 5 years | Warranty period starts from the original date of purchase. |
| Digital Meters | 3 years | Warranty period starts from the original date of purchase. |
| Vessel System Monitors | 3 years | Warranty period starts from the original date of purchase. |
Warranty Assessment and Remedy
If a Blue Sea Systems product is found to be defective in materials or manufacture within the applicable warranty period, we will, at our discretion, arrange a repair, replacement, store credit or refund, depending on the nature of the fault and the requirements of Australian Consumer Law.
Products may need to be returned for assessment before a warranty claim can be approved. Where required, the product must be returned with dated proof of purchase and a clear description of the fault.
Labour costs for removing, replacing, reinstalling or diagnosing a product are not covered by this express warranty unless otherwise required under Australian Consumer Law.
Making a Warranty Claim
To make a warranty claim, please contact us with your dated proof of purchase, product details and a description of the fault.
The product may need to be returned for inspection before the claim can be assessed. If the product is confirmed to be faulty and covered by this warranty, we will advise the available remedy.
What This Warranty Does Not Cover
This warranty does not cover faults or damage caused by incorrect installation, incorrect application, misuse, abuse, neglect, unauthorised modification, accidental damage, normal wear and tear, environmental damage, or failure to use the product in accordance with the manufacturer's instructions.
- Incorrect installation or wiring
- Incorrect product selection or application
- Misuse, abuse or neglect
- Physical or accidental damage
- Water ingress or environmental damage outside the product's intended use
- Unauthorised modification or repair
- Normal wear and tear
- Labour costs for removal, replacement, reinstallation or diagnosis
- Freight, travel or call-out costs unless otherwise required by law
- Products not returned for assessment when reasonably required
Manufacturer Support
Blue Sea Systems may provide additional manufacturer support on some products beyond the warranty period listed above. Where available, we may assist customers in contacting the manufacturer, but any manufacturer support beyond the express warranty period is subject to the manufacturer's own terms and continued availability.
Australian Consumer Law
This warranty is in addition to other rights and remedies available at law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
DOCUMENTS
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