SparkFun
Non-Invasive Current Sensor - 30A
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 cur...
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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.
Rated 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.
Key Features
- Non-Invasive – Clamp-on design requires no wire cutting or electrical contact
- 30 A Maximum – Suitable for monitoring typical household circuits
- Split-Core Design – Easy to install around existing wiring
- No Built-In Load Resistor – Place a burden resistor across the output to convert induced current to a measurable voltage
Ideal For
- DIY home energy monitoring systems
- Over-current detection and protection circuits
- Arduino and microcontroller-based power logging projects
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
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Sensors & Input
ECS1030-L72 Current Sensor Datasheet
Datasheet · 274.5 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 467.9 KB · Click any page to view full size
Related Tutorials
Free guides on learn.littlebird.com.au
