{"title":"Non-Invasive Current Sensor - 30A","handle":"non-invasive-current-sensor-30a-2","url":"/products/non-invasive-current-sensor-30a-2","description":"This non-invasive current sensor (also known as a split-core current transformer) clamps around the supply line of an electrical load to measure how much current is flowing through it. The sensor acts as an inductor, responding to the magnetic field around a current-carrying conductor, and outputs a proportional current that can be read by a microcontroller.\n\nRated for up to 30 A, this sensor is well suited for building your own energy monitor, tracking household power usage, or creating an over-current protection system for AC loads.\n\nKey Features\n\n\nNon-Invasive – Clamp-on design requires no wire cutting or electrical contact\n\n30 A Maximum – Suitable for monitoring typical household circuits\n\nSplit-Core Design – Easy to install around existing wiring\n\nNo Built-In Load Resistor – Place a burden resistor across the output to convert induced current to a measurable voltage\n\n\n\nTip: For a 5 V Arduino, a 33 Ω burden resistor is recommended. You will also need a voltage divider bias circuit to offset the AC signal into the Arduino's 0–5 V ADC range. See the OpenEnergyMonitor guide below for full details.\n\n\nIdeal For\n\nDIY home energy monitoring systems\nOver-current detection and protection circuits\nArduino and microcontroller-based power logging projects\n\n\nResources\n\nDatasheet (PDF)\nArduino Energy Monitor Guide (OpenEnergyMonitor)\nEnvironmental Monitoring with the Tessel 2 (SparkFun)\n","vendor":"SparkFun","product_type":"","in_stock":true,"options":[],"variants":[{"id":12156,"title":"Default Title","sku":"SF-SEN-11005","price":34.85,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":49,"option1":"Default Title"}]}