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100A SCT-013-000 Non-invasive AC Current Clamp Sensor


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This non-invasive current sensor clamped around the supply line can measure a load up to 100 Amps, and allow you to calculate how much current pass through it. It can be useful for building your own energy monitor or for building an over-current protection device for an AC load. This current clamp can be used to detect a current of up to 100A. Simply clip it around the current source that you wish to measure and it will produce a (very) small AC voltage proportional to the current. The cable is terminated on one end with a standard 3.5mm jack (like a headphone jack).

Use this to build your own energy monitor and keep your power usage down, or use it to to build an over-current protection device for an AC load. See the link below for an example project. Check out the datasheet for the pinout of the 3.5mm jack.

What is CT sensors:
Current transformers (CTs) are sensors that are used for measuring alternating current. They are particularly useful for measuring whole building electricity consumption (or generation for that matter).
The split core type such as the CT in the picture above, is particularly suitable for DIY use it can be clipped straight on to either the live or neutral wire coming into the building without having to do any high voltage electrical work.


  • Suitable for the current measuring
  • Monitoring and protection of AC motor
  • Lighting equipment
  • Air compressor


  • Input Current: 0~100A AC
  • Output Mode: 0~50mA
  • Non-linearity: ±3%
  • Turn Ratio: 100A:0.05A
  • Resistance Grade: Grade B
  • Work Temperature: -25°C ~ 70°C
  • Leading Wire in Length: 1m
  • Non-invasive current transformer
  • Suitable for lighting equipment, AC motors, air compressors, monitoring, current measurement, and protection
  • Meet UL94-V0 flame retardant properties
  • Two form of output current, voltage (voltage output built-in the sampling resistor)
  • Non-linearity ±3%(10%-120% rated input current)
  • Model: SCT-013-000
  • Reference project: Open Energy Monitor
  • Core Material: Ferrite
  • Dielectric Strength: 6000V AC/1min
  • Input Current: 0A-100A
  • Anti-flaming rate: UL94-V0
  • Mechanical strength: opening and closing times, no less than 1000 times (20 ℃)
  • Opening Size: Approx. 0.51 * 0.51inch / 13 x 13mm



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100A SCT-013-000 Non-invasive AC Current Clamp Sensor

100A SCT-013-000 Non-invasive AC Current Clamp Sensor

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