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Blue Sea 100A/50mA AC Current Sensing Coil for AC Ammeters
Blue Sea 100A/50mA AC Current Sensing Coil for AC Ammeters
Non-Contact Toroidal Current Transformer with Encapsulated Housing
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$52.51
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DESCRIPTION
Precision Non-Contact AC Current Measurement for Marine and Off-Grid Power Systems
Monitoring high-amperage Alternating Current (AC) loads requires safe, accurate, and reliable hardware. The Blue Sea Systems 100A/50mA AC Current Sensing Coil acts as a specialised current transformer, stepping down a primary load of up to 100A into a safe, proportional 50mA secondary signal. This allows compatible AC ammeters and digital power monitors to accurately track system load without routing heavy-gauge, high-voltage AC conductors directly to the instrument panel.
Engineered for demanding environments, this sensing coil is widely used in marine electrical systems, RV shore power setups, and off-grid inverter/charger installations. By isolating the monitoring display from the primary AC circuit, it significantly reduces installation complexity and mitigates electrical hazards behind the helm or control board.
Safe Toroidal Design and Simplified Installation
Unlike DC shunts that require cutting cables and bolting heavy lugs in-line, this AC current transformer utilises a closed-loop toroidal (ring) architecture for non-contact induction measurement. Installers simply pass the primary AC hot conductor through the centre aperture of the coil. As alternating current flows through the main cable, the coil induces a proportional 50mA current at full 100A scale, which travels through the integrated secondary wire leads directly to the AC ammeter.
This non-intrusive method eliminates extra termination points in your primary high-load wiring, removing potential points of high resistance, voltage drop, and heat build-up.
Key Features and Benefits
- 100A to 50mA Sensing Ratio: Provides linear signal scaling for compatible analogue and digital AC ammeters requiring a 50mA full-scale input.
- Non-Contact Toroidal Architecture: Measures alternating current via electromagnetic induction, eliminating the need to splice into primary AC supply cables.
- Encapsulated Marine-Grade Housing: Protects the internal windings from moisture, vibration, and corrosion in harsh marine and mobile environments.
- Integrated Secondary Leads: Supplied with factory-attached flying leads for straightforward termination to the rear of your monitoring gauge.
- Enhanced Panel Safety: Keeps high-voltage, high-current AC mains cabling safely inside the main distribution enclosure rather than behind the dashboard.
Built for Reliability in Demanding Environments
Standard industrial current transformers often struggle with the constant vibration and damp conditions found in boats and recreational vehicles. Blue Sea Systems addresses these challenges with a fully encapsulated housing that shields the internal transformer core from salt mist, humidity, and mechanical shock. Using a properly matched, marine-grade sensing coil prevents inaccurate load readings that could otherwise lead to tripped shore power breakers or overloaded inverters.
Typical Applications
- Monitoring AC shore power incoming loads on marine vessels and motorhomes
- Tracking output amperage from onboard marine generators and off-grid AC inverters
- Replacing or upgrading sensing coils for Blue Sea Systems analogue and digital AC ammeter panels
- Custom AC distribution switchboards requiring compact, isolated current measurement
Upgrade Your AC Power Monitoring
Ensure accurate load management and a safer switchboard layout in your vessel, caravan, or off-grid system. Add the Blue Sea Systems 100A/50mA AC Current Sensing Coil to your electrical setup for dependable, non-contact current measurement.
SKU: BS-8257B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Product type | AC current sensing coil |
| Current sensing ratio | 100A/50mA |
| Intended use | For use with AC ammeters |
| SKU: | BS-8257B |
| Model #: | BS-8257B |
| MPN: | BS-8257B |
| Package weight: | 0.096 kg |
| Package length: | 0.08 m |
| Package width: | 0.08 m |
| Package height: | 0.04 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.