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Blue Sea Systems 8257 AC Current Transformer 100A/50mA Sensing Coil

Manufacturer

Blue Sea Systems

<p>When electrical reliability can mean the difference between a successful voyage and a dangerous situation, marine professionals and enthusiasts turn to Blue Sea Systems. Founded in 1992, this American manufacturer has built a reputation for creating electrical components specifically engineered to withstand the unforgiving marine environment. Every product reflects a commitment to safety standards and real-world performance that has made Blue Sea Systems a leading name in marine and specialty vehicle electrical systems.</p> <h3>Engineering for the Marine Environment</h3> <p>Blue Sea Systems develops and manufactures dependable AC and DC electrical products for marine and specialized vehicle applications, designed in the USA and engineered to excel in challenging environments. The marine environment presents unique challenges—salt spray, constant vibration, temperature extremes, and moisture exposure—that can quickly degrade inferior electrical components. Blue Sea Systems addresses these challenges through careful material selection, rigorous testing protocols, and designs that prioritize both safety and serviceability. Their components are engineered for marine use and align with the intent of ABYC E-11: AC and DC Electrical Systems on Boats and relevant USCG electrical regulations.</p> <h3>Commitment to Safety Standards</h3> <p>Safety standards aren't just guidelines for Blue Sea Systems—they're fundamental to every product design. All Blue Sea Systems marine battery disconnect switches comply with the ABYC C-7 certification, demonstrating their commitment to meeting and exceeding industry safety requirements. The company maintains ABYC-certified employees across multiple departments, from engineering to technical support, ensuring deep expertise in marine electrical system design and installation standards.</p> <h3>Comprehensive Product Range</h3> <p>Blue Sea Systems offers an extensive catalog designed to address every aspect of marine electrical systems. Their <a href="/7262-blue-sea-systems-circuit-breakers-200260">circuit breakers</a> provide resettable overcurrent protection with trip-free designs and clear trip indication for quick diagnostics. For power management, their <a href="/7262-blue-sea-systems-battery-switches-manual-200149">battery switches</a> offer reliable methods for controlling battery banks and disconnecting loads during storage or emergencies, with ABYC C-7 compliance guaranteed.</p> <p>Monitoring system health is critical aboard any vessel, which is why their <a href="/7262-blue-sea-systems-battery-monitors-volt-meters-200146">battery monitors and volt meters</a> provide accurate real-time data to help operators make informed decisions about power usage and charging. The company's <a href="/7262-blue-sea-systems-terminal-blocks-bus-bars-201059">terminal blocks and bus bars</a> create organized, serviceable connection points that simplify installation and future modifications. For keeping batteries properly charged, Blue Sea Systems offers <a href="/7262-blue-sea-systems-battery-chargers-200141">battery chargers</a> engineered with features like automatic charging relay compatibility and proper charge profile management.</p> <h3>Built by Boaters, for Boaters</h3> <p>Blue Sea Systems was founded based on a commitment to create innovative high quality marine electrical products to improve the safety, simplicity, and reliability of boating, with employees who are active boaters applying their passion to designing, developing, and building products. This firsthand experience translates into practical features like modular layouts, standardized footprints, and installer-centric designs that streamline panel work and serviceability. The result is a product line that addresses real challenges faced on the water, backed by comprehensive technical documentation and support resources that help both professionals and DIY enthusiasts complete installations with confidence.</p>

Part Number

8257
06/01/2036 12:54 PM
Sale Price

$22.74

In Stock (7)

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

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Fitment guaranteed

Product Details

The Blue Sea Systems 8257 AC Current Transformer is a precision sensing coil designed for accurate AC amperage monitoring in marine, RV, and specialty vehicle electrical systems. This current transformer features a 100A AC to 50mA AC ratio, allowing it to step down high current measurements to a safe level for use with analog AC ammeters.

Key Features:

  • Transformer ratio: 100A AC input produces 50mA AC output signal
  • Compact split-core design with 0.60-inch inside diameter and 1.38-inch outside diameter
  • Compatible with Blue Sea Systems AC analog ammeters including model 8258
  • Marine-grade construction engineered for harsh environments
  • Simple installation - coil slips over the wire to be measured
  • Lightweight at just 0.20 lbs for easy mounting

This current transformer is an essential component for AC electrical monitoring systems, providing accurate real-time current measurement without breaking the circuit. Ideal for monitoring shore power connections, generators, inverters, and AC distribution systems on boats, RVs, and other mobile applications where reliable electrical monitoring is critical.

Products specifications

Dimensions

1/2" Inside Diameter x 1 1/2" Outside Diameter

Type

Coil

Warranty Details

One Year

Cheap&amp;easy

Lowest price I can find! Sent tracking number via FedEx without trouble! Would recommend!

thanks!

Great service with the best prices I could find online. I will be ordering from them again!

good

easy

Finding the part, and ordering it was great. But UPS dropped the otherwise phenomenal ball... Ordered the item on Wednesday... got it the next MONDAY. I ordered it Second Day Air. Then I find out, &quot;Oh, it's Second BUSINESS Day Air... we don't work

I would definitely order my auto parts from your shop again. I was impressed with the prices and the correspondence. Thanks!

Great price on a head gasket. Love the Amazon integration.

First time, very positive, good price

It is easy to buy...

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