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Blue Sea 500A/50mV DC Shunt
Blue Sea 500A/50mV DC Shunt
Solid Brass Blocks & Insulated Base - 330A Continuous Rating
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$135.91
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DESCRIPTION
Precision DC Current Measurement for High-Capacity Electrical Systems
Accurate battery monitoring and load tracking are critical for the longevity and safety of any substantial off-grid, marine, or dual-battery electrical setup. The Blue Sea 500A/50mV DC Shunt is engineered to provide a highly reliable, proportional millivolt signal to compatible DC ammeters and battery monitors. By installing this external current shunt in line with your primary DC circuit, you can safely measure substantial electrical loads up to 500A without routing heavy-gauge battery cables directly to your dashboard or control panel.
Engineered for High Conductivity and Thermal Stability
When managing hundreds of amperes in a 12V, 24V, or 48V system, inferior components can introduce unwanted resistance, leading to inaccurate readings and dangerous heat build-up. This Blue Sea Systems shunt is built with two substantial, solid brass terminal blocks that offer exceptional electrical conductivity and act as natural heat sinks to dissipate thermal energy under heavy loads.
Between the brass blocks lies a precision-engineered resistive element composed of parallel plates. These plates are calibrated to maintain a stable, accurate resistance across varying current ranges, producing a full-scale 50mV drop at 500A. To ensure safe installation across a variety of surfaces, the entire metal assembly is mounted onto a reinforced black plastic insulated base, completely isolating the high-current path from your vessel bulkhead, caravan wall, or battery enclosure.
Key Features and Benefits
- 500A Rated Capacity with 50mV Output: Delivers a standard 10A per 1mV ratio, making it compatible with Blue Sea Systems digital and analogue ammeters as well as other industry-standard 50mV monitoring displays.
- Solid Brass Terminal Blocks: Maximises conductivity and aids in thermal management during high-demand cycles such as inverter operation or engine cranking.
- Heavy-Duty Connection Bolts: Equipped with large main terminal bolts and integrated spring washers to maintain clamping force on heavy battery lugs, reducing the risk of loose connections caused by vehicle or marine vibration.
- Dedicated Ammeter Sense Screws: Separate small terminal screws allow for the clean, direct attachment of twisted-pair sensing wires, isolating the measurement signal from the main load path for improved accuracy.
- Integrated Insulated Base: Prevents accidental short circuits against conductive mounting surfaces and simplifies physical installation inside electrical cabinets.
Application and Operational Sizing
This 500A current shunt is ideally suited for demanding applications including marine house banks, caravan inverter setups, 4WD canopy power systems, and off-grid solar storage. It allows system operators to observe both charging currents from alternators and solar controllers, as well as heavy discharge loads from inverters, winches, and bow thrusters.
For optimal thermal performance and long-term reliability during normal continuous operation, it is recommended that continuous loads do not exceed two-thirds (66%, or approximately 330A) of the 500A rated capacity. Adhering to this continuous-use guideline prevents excessive heat accumulation in the resistive plates, preserving calibration accuracy and protecting surrounding wiring insulation.
Upgrade Your System Monitoring Today
Take the guesswork out of your power management and protect your battery investment with reliable hardware. Add the Blue Sea 500A/50mV DC Shunt to your electrical system setup for dependable, accurate current tracking in demanding mobile and off-grid environments.
SKU: BS-8255B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Rated current | 500A |
| Millivolt drop | 50mV |
| Intended use | For use with DC ammeters |
| Continuous operation recommendation | Not more than two-thirds (66%) of rated current under normal conditions |
| SKU: | BS-8255B |
| Model #: | BS-8255B |
| MPN: | BS-8255B |
| Package weight: | 0.264 kg |
| Package length: | 0.1 m |
| Package width: | 0.06 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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