{"product_id":"blue-sea-150a-50ma-ac-current-sensing-coil-for-ac-ammeters","title":"Blue Sea 150A\/50mA AC Current Sensing Coil for AC Ammeters","description":"\u003ch2\u003eNon-Invasive AC Current Monitoring for Ammeters and Power Systems\u003c\/h2\u003e\u003cp\u003eThe BS-8256B AC Current-Sensing Coil is a precision current transformer designed to provide safe, accurate, and non-invasive monitoring for AC electrical systems. Engineered specifically for integration with compatible AC ammeters, this toroidal sensing coil measures alternating current up to 150A and steps it down via a precise 150A\/50mA transformation ratio. By isolating the measurement instrument from the primary high-current conductor, it simplifies installation and enhances system safety across marine, off-grid solar, caravan, and industrial power distribution boards.\u003c\/p\u003e\u003ch3\u003eSafe and Reliable Current Transformer Technology\u003c\/h3\u003e\u003cp\u003eMonitoring high-amperage AC circuits directly can present significant safety risks and installation challenges. Utilising a toroidal core design, this current-sensing coil allows the primary AC conductor to pass straight through the centre aperture without requiring you to cut or splice into heavy-gauge power cables. As alternating current flows through the main conductor, the coil induces a proportional 50mA secondary signal. This low-level output is then safely transmitted via the attached insulated black wire leads directly to your AC ammeter or energy monitoring display.\u003c\/p\u003e\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e150A\/50mA Transformation Ratio:\u003c\/strong\u003e Accurately scales down high primary currents up to 150A into a manageable 50mA signal for precise ammeter readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Invasive Toroidal Core:\u003c\/strong\u003e Allows the main AC conductor to pass through the sensing ring, eliminating the need to interrupt high-current connections during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-Attached Wire Leads:\u003c\/strong\u003e Supplied with insulated black wire leads for straightforward routing and connection to your compatible AC measurement device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Electrical Isolation:\u003c\/strong\u003e Separates high-energy AC circuits from delicate dashboard instruments and user-facing control panels, reducing the risk of equipment damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear Identification:\u003c\/strong\u003e Features a permanent, high-contrast label displaying the transformation ratio for easy verification during system servicing or troubleshooting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose a Dedicated AC Sensing Coil?\u003c\/h3\u003e\u003cp\u003eWhen building or upgrading an AC electrical switchboard, relying on uncalibrated or poorly insulated measurement components can lead to inaccurate load readings and potential thermal hazards. A dedicated current transformer like the BS-8256B ensures consistent linearity across its 150A operating range. This allows system operators to accurately track heavy AC loads, such as air conditioning units, water heaters, and high-output inverter chargers, preventing accidental circuit overloads and nuisance breaker trips.\u003c\/p\u003e\u003cp\u003eWhether you are fitting out a commercial marine vessel, assembling a custom off-grid cabin control panel, or replacing a damaged sensor on an existing AC ammeter setup, this compact circular coil fits neatly inside tight electrical enclosures and distribution boxes.\u003c\/p\u003e\u003ch3\u003eUpgrade Your AC Power Monitoring\u003c\/h3\u003e\u003cp\u003eEnsure accurate load management and seamless integration with your compatible AC ammeter. Add the BS-8256B 150A\/50mA AC Current-Sensing Coil to your system today for reliable, non-invasive electrical monitoring.\u003c\/p\u003e","brand":"Blue Sea","offers":[{"title":"Default Title","offer_id":43631773220925,"sku":"BS-8256B","price":53.54,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/3918\/3933\/files\/ac-current-sensing-coil-150a-50ma-bs-8256b.png?v=1793441230","url":"https:\/\/www.solar4rvs.com.au\/products\/blue-sea-150a-50ma-ac-current-sensing-coil-for-ac-ammeters","provider":"Solar 4 RVs","version":"1.0","type":"link"}