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Blue Sea 50A/50mA AC Current Sensing Coil
Blue Sea 50A/50mA AC Current Sensing Coil
Toroidal Current Transformer for AC Ammeters - 15.24mm Inner Diameter
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DESCRIPTION
Precision AC Current Monitoring for Marine, Off-Grid, and Industrial Systems
Accurate monitoring of alternating current (AC) loads is critical for maintaining the safety and efficiency of any complex electrical system. Whether managing shore power on a marine vessel, monitoring inverter outputs in an off-grid caravan, or tracking machinery loads in an industrial switchboard, this 50A/50mA AC Current Sensing Coil provides a reliable, non-intrusive method for measuring current flow. Designed specifically to pair with compatible AC ammeters and digital monitoring displays, this current transformer steps down high primary currents into a safe, manageable signal for your instrumentation.
How Non-Invasive Toroidal Sensing Works
Traditional inline ammeters require breaking the main circuit to route heavy-gauge wiring directly through the meter, increasing installation complexity and introducing potential points of failure. A toroidal current sensing coil solves this by utilising electromagnetic induction. As alternating current flows through the primary conductor passing through the centre of the coil, it generates a magnetic field. The coil senses this field and produces a proportional 50mA secondary output signal when a 50A AC load is present.
Because the primary AC wire simply passes through the 0.60 in (15.24mm) inner diameter aperture without making direct electrical contact, the monitoring circuit remains completely isolated from high-voltage AC lines. This significantly reduces the risk of short circuits, voltage drops, and heat build-up behind your control panel.
Key Features and Technical Benefits
- Galvanic Isolation: Safely separates high-voltage AC load wiring from sensitive dashboard gauges and monitoring panels, enhancing operator safety and system reliability.
- 50A to 50mA Step-Down Ratio: Delivers a precise, linear 1000:1 signal reduction suitable for standard 50mA input AC ammeters and power monitors.
- Pre-Wired Dual Leads: Supplied with integrated wire leads for straightforward connection to your measurement device, reducing termination time during fit-outs.
- Compact Toroidal Footprint: With a 1.38 in (35.05mm) outside diameter, this sensor easily fits inside crowded distribution boards, inverter enclosures, and marine electrical cabinets.
- Encapsulated Construction: The durable black housing protects the internal windings from vibration, dust, and incidental contact in mobile and harsh environments.
Why Upgrade from Standard Shunts or Inline Meters?
Unlike DC systems that rely on resistive shunts, AC systems benefit immensely from inductive current transformers. Standard low-grade sensors can suffer from core saturation, leading to inaccurate readings at peak loads or potential overheating. This purpose-built current transformer is engineered to maintain linearity across its rated 50A range, ensuring your energy management system receives dependable data. Accurate load tracking helps prevent overloaded shore power inlets, tripped circuit breakers, and overworked off-grid inverters.
Ideal Applications
- Marine Electrical Panels: Monitor 230V AC shore power intake or onboard generator output on boats and yachts.
- RV and Caravan Setups: Track high-draw AC appliances like air conditioners and induction cooktops running off inverters.
- Off-Grid Solar and Battery Systems: Measure AC output loads from standalone inverters to optimise energy consumption.
- Switchboards and Control Cabinets: Integrate into custom electrical enclosures for dedicated circuit monitoring.
Upgrade Your AC Power Visibility
Ensure your electrical distribution panel is equipped for safe, accurate load management. Integrate this 50A/50mA AC Current Sensing Coil with your compatible AC ammeter today for dependable, isolated current measurement across your marine, mobile, or off-grid power system.
SKU: BS-8073B
SPECIFICATIONS
Specifications
| Part Number | 8073 |
|---|---|
| For Use With | AC Ammeters |
| Inside Diameter | 0.60 in (15.24 mm) |
| Outside Diameter | 1.38 in (35.05 mm) |
| Ratio | 50 A AC/50 mA AC |
| Weight | 0.10 lb (0.05 kg) |
| SKU: | BS-8073B |
| Package weight: | 0.054 kg |
| Package length: | 0.1 m |
| Package width: | 0.08 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.