The SCT-013-100 AC Current Clamp Sensor is a non-invasive current transformer designed to measure alternating current up to 100 A without direct electrical contact. It clips around a single live conductor and outputs a proportional signal, ensuring safe and isolated current measurement. This sensor is widely used in energy monitoring systems, smart meters, power analysis, and DIY electrical measurement projects.
Core Sensor Specifications
• Sensor Type: Non-invasive AC current transformer
• Model: SCT-013-100
• Measurement Type: AC current only
• Isolation Method: Magnetic coupling (clip-on)
Electrical & Interface
• Rated Current Range: 0–100 A AC
• Output Type: Analog current / voltage (variant dependent)
• Connector Type: 3.5 mm audio jack
• Interface Requirement: Burden resistor / signal conditioning (if not built-in)
• Electrical Isolation: Yes (safe, non-contact measurement)
Performance Characteristics
• Safe measurement without breaking the circuit
• Good linearity across rated current range
• Stable output suitable for RMS calculation
• Minimal insertion loss on measured conductor
Physical Characteristics
• Sensor Type: Split-core clamp
• Enclosure Material: Insulated plastic housing
• Easy clip-on installation
• Compact and lightweight design
Compatibility
• Arduino Uno / Nano / Mega (with ADC)
• ESP8266 / ESP32 (ADC scaling required)
• Raspberry Pi (with external ADC)
• Energy monitoring and smart metering systems
• Home and industrial power monitoring
Key Advantages
• Non-invasive and electrically isolated
• High safety for mains measurements
• Easy installation and removal
• Widely used and well documented
Technical Insights
• Measures only one conductor (not both live and neutral together)
• Output must be conditioned for MCU ADC range
• Calibration improves accuracy
• Not suitable for DC current measurement
Applications
• Energy consumption monitoring
• Smart meters and IoT power systems
• Load analysis and power logging
• Home automation energy tracking
• Educational electrical measurement projects
Pro Tip
• Clamp around only the live wire
• Use proper burden resistor as per variant
• Perform calibration with known load
• Secure the clamp to avoid movement during measurement
Package Includes
• 1 × SCT-013-100 AC Current Clamp Sensor