{"product_id":"ac-current-sensor-non-invasive-split-core-transformer-10a-20a-30a-50a","title":"Split Core AC Current Sensor Transformer 10A 20A 30A 50A","description":"\u003cp\u003eThe \u003cstrong\u003eAC Current Sensor Non-Invasive Split Core Transformer\u003c\/strong\u003e is a versatile, easy-to-install current sensing solution designed for energy monitoring, home automation, and electrical measurement projects. With its split-core design, you can clamp it around an existing wire without cutting or interrupting the circuit — making installation clean, safe, and non-invasive.\u003c\/p\u003e\n\n\u003cp\u003eBuilt with a high-permeability \u003cstrong\u003eferrite core\u003c\/strong\u003e for excellent mechanical strength and measurement accuracy, this transformer is compact at just \u003cstrong\u003e13mm × 13mm\u003c\/strong\u003e and supports multiple current ranges — \u003cstrong\u003e10A, 20A, 30A, and 50A\u003c\/strong\u003e — so you can choose the right spec for your application. It offers two output forms: \u003cstrong\u003ecurrent output\u003c\/strong\u003e and \u003cstrong\u003evoltage output\u003c\/strong\u003e (with built-in sampling resistor), giving you flexibility to connect directly to microcontrollers, data loggers, or energy meters. Available in \u003cstrong\u003e3 color options\u003c\/strong\u003e to suit your setup.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNon-invasive split-core design\u003c\/strong\u003e — clamp onto existing wiring without cutting or rewiring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple current ranges:\u003c\/strong\u003e 10A, 20A, 30A, and 50A to match a variety of AC circuits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual output options:\u003c\/strong\u003e current output or voltage output (built-in sampling resistor)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-permeability ferrite core\u003c\/strong\u003e for strong mechanical durability and low non-linearity (≤3%)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact footprint:\u003c\/strong\u003e 13mm × 13mm — fits in tight spaces and panel installations\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible with microcontrollers\u003c\/strong\u003e such as Arduino, Raspberry Pi, and PLC systems\u003c\/li\u003e\n  \u003cli\u003eAvailable in \u003cstrong\u003e3 color variants\u003c\/strong\u003e for easy circuit identification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCore Material:\u003c\/strong\u003e Ferrite\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCore Size:\u003c\/strong\u003e 13mm × 13mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Ranges:\u003c\/strong\u003e 10A \/ 20A \/ 30A \/ 50A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNon-linearity:\u003c\/strong\u003e ≤3%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Type:\u003c\/strong\u003e Current output \u0026amp; Voltage output (with sampling resistor)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Split-core (non-invasive)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHome energy monitoring systems\u003c\/li\u003e\n  \u003cli\u003eSmart home and IoT automation projects\u003c\/li\u003e\n  \u003cli\u003eIndustrial current measurement and logging\u003c\/li\u003e\n  \u003cli\u003eDIY electronics and microcontroller projects\u003c\/li\u003e\n  \u003cli\u003ePower quality analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on electrical safety standards and safe practices when working with AC circuits, refer to the \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA Electrical Safety guidelines\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is a non-invasive split-core current sensor transformer and how does it work?\u003c\/h4\u003e\n\u003cp\u003eA: A non-invasive split-core current sensor transformer clamps around an existing AC wire without cutting or interrupting the circuit. It uses electromagnetic induction — as AC current flows through the wire, it generates a proportional magnetic field, which the ferrite core captures and converts into a measurable output current or voltage signal. This makes it safe, easy to install, and ideal for energy monitoring and automation projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What current ranges are available, and how do I choose the right one?\u003c\/h4\u003e\n\u003cp\u003eA: This sensor is available in 10A, 20A, 30A, and 50A ranges. Choose a range that matches or slightly exceeds the maximum current you expect to measure on your circuit. For example, use the 10A variant for low-power appliances and the 50A variant for higher-load circuits like HVAC units or large appliances. Selecting the correct range ensures the best accuracy and measurement resolution.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this current sensor compatible with Arduino or Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — the voltage output version (with built-in sampling resistor) can connect directly to the analog input pins of microcontrollers like Arduino or Raspberry Pi. This makes it a popular choice for DIY energy monitors, smart home projects, and IoT data logging systems. The current output version is better suited for use with dedicated current measurement circuits or PLCs.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What does the ferrite core contribute to this sensor's performance?\u003c\/h4\u003e\n\u003cp\u003eA: The ferrite core provides high magnetic permeability, excellent mechanical strength, and low energy loss. This results in accurate current measurement with a non-linearity of ≤3%, meaning readings closely reflect the actual current flowing through the monitored conductor — even at lower current levels.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a non-invasive split-core current sensor transformer and how does it work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A non-invasive split-core current sensor transformer clamps around an existing AC wire without cutting or interrupting the circuit. It uses electromagnetic induction — as AC current flows through the wire, it generates a proportional magnetic field, which the ferrite core captures and converts into a measurable output current or voltage signal. 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