YHDC SCT013-000 Split Core Current Transformer

The SCT013-000 is a split core current transformer from YHDC designed for non-invasive AC current measurement. Its hinged ferrite core clamps around a live conductor without disconnecting the circuit, and the secondary winding produces a current output proportional to the primary current, with a 100A to 50mA transformation ratio. Because the output is a current signal rather than a voltage, an external burden resistor is required to convert it into a measurable voltage for an ADC; this makes the SCT013-000 suitable for energy monitoring projects built around Arduino, ESP32, and other microcontrollers. The 13 × 13 mm opening accepts standard insulated building wiring, and the 1.5 m lead terminates in a 3.5 mm three-core audio plug that can be adapted to breadboards or terminal blocks. Non-linearity is specified at ±3% across 10–120% of rated current, accuracy is approximately ±1%, and the dielectric strength is 6000V AC for one minute. Operating temperature is -25°C to +70°C. Typical applications include household energy meters, load monitoring, smart home power logging, and industrial current supervision where a safe, isolated measurement is needed. This SCT013-000 current transformer is a practical choice for anyone building a reliable AC current sensing front end.

1. Household and commercial energy monitoring systems.
2. Arduino, ESP32, and Raspberry Pi power measurement projects.
3. Load monitoring and appliance consumption logging.
4. Smart home and IoT current sensing nodes.
5. Industrial current supervision and fault detection.
6. Educational demonstrations of electromagnetic induction and AC measurement.

1. Model: SCT013-000.
2. Type: split core (non-invasive) AC current transformer.
3. Input current range: 0–100A AC.
4. Output: 0–50mA AC (current output; external burden resistor required).
5. Transformation ratio: 100A to 50mA.
6. Opening size: 13 × 13 mm.
7. Non-linearity: ±3% (10–120% of rated current).
8. Accuracy: approximately ±1%.
9. Dielectric strength: 6000V AC for 1 minute.
10. Lead length: 1.5 m (some listings state 1 m).
11. Output plug: 3.5 mm three-core audio plug.
12. Core material: ferrite.
13. Operating temperature: -25°C to +70°C.
14. Storage temperature: -30°C to +90°C (per datasheet).
15. Dimensions (body): approximately 57 × 32 × 22 mm (per distributor listing).