AC 100A Split-Core Current Sensor (SCT013 – 100A / 50mA)
Product Description
The SCT013 100A / 50mA is a split-core AC current transformer (CT) designed for non-invasive measurement of alternating current up to 100A. Thanks to its clip-on design, it can be installed safely without disconnecting existing wiring, making it ideal for energy monitoring, power measurement, and protection systems.
This model provides a current output (50mA at rated current) and does not include a built-in burden resistor, allowing flexible use with external signal conditioning circuits, energy meters, and microcontroller-based systems.
Key Features
- Split-core, non-intrusive current measurement
- Measures AC current only
- Current output type (external burden resistor required)
- Safe electrical isolation from high-voltage lines
- Stable performance and good linearity
- Easy clip-on installation
Technical Specifications
Parameter | Specification |
|---|---|
| Model | SCT013 (100A / 50mA) |
| Sensor Type | Split-Core Current Transformer |
| Rated Input Current | 0 – 100A AC |
| Rated Output Current | 0 – 50mA AC |
| Output Type | Current Output (No internal burden resistor) |
| Turns Ratio | 2000 : 1 (typical) |
| Accuracy | ±1% (typical) |
| Operating Frequency | 50Hz – 60Hz |
| Maximum Working Voltage | 660V AC |
| Dielectric Strength | 3kV AC / 1 minute |
| Operating Temperature | −25°C to +70°C |
| Storage Temperature | −40°C to +85°C |
| Core Material | Ferrite |
| Opening Size | Approx. 13mm × 13mm |
| Lead Wire Length | Approx. 1 meter |
| Mounting Type | Clip-on / Split-core |
| Weight | Approx. 50–60g |
Microcontroller Compatibility
Can be used with Arduino, STM32, ESP8266, ESP32, and other microcontrollers when combined with an external burden resistor and appropriate signal conditioning to convert the output current into a measurable voltage suitable for ADC inputs.
Typical Applications
- AC current measurement
- Energy and power monitoring
- Smart meters
- Home automation and IoT projects
- AC motor and equipment monitoring
- Overcurrent detection and protection circuits
Important Notes
- AC current only (not suitable for DC measurement)
- Requires an external burden resistor
- Output must be conditioned before connecting to ADC inputs
- Ensure correct burden resistor selection to avoid sensor saturation