1V Output Current Transformer 20A (SCT-013-020) | Split Core Type | 1% Precision | with 1 Meter Cable

Description

The SCT-013-020 is a split-core AC current transformer designed for non-invasive current measurement in energy monitoring, load diagnostics, and equipment protection. As a voltage-output variant in the SCT-013 family, it includes an internal burden resistor, delivering a direct 0–1V AC output proportional to the primary current—no external signal-conditioning resistor is required . The clamp-on design allows installation around an existing insulated conductor without cutting or disconnecting the wire, making it suitable for retrofitting into live electrical installations. This model is rated for 20A AC and is commonly used for monitoring individual appliances, lighting circuits, and small motors.

The 1-meter cable terminates in a standard 3.5mm audio plug, with the tip and sleeve carrying the signal . The sensor is suitable for individual makers building Arduino-based energy monitors and for business purchasers seeking a cost-effective, non-invasive current sensing solution for equipment-level monitoring and energy audits.

Specification note: Sources vary on accuracy. Some list ±1% accuracy with excellent linearity (≤0.2%) , while manufacturer datasheets specify non-linearity of ±3% (10%–120% of rated input) . The ±1% figure may refer to a specific calibrated condition. For critical applications, calibrate against a known reference load.

Features

• Non-Invasive Split-Core Design: Clamps around an existing conductor without disconnecting the circuit, enabling safe retrofitting into live installations .

• Voltage Output with Internal Burden Resistor: Provides a direct 0–1V AC output ready for ADC connection; no external burden resistor required .

• 20A Measurement Range: Suitable for individual appliances, lighting circuits, and small equipment monitoring .

• 13mm × 13mm Opening: Accommodates typical domestic and light commercial wiring .

• 1-Meter Cable with 3.5mm Plug: Standardized connector simplifies connection to breakout boards and energy monitoring shields .

• Ferrite Core Construction: Provides stable magnetic coupling and consistent ratio across the measurement range .

• Safety Latch Mechanism: Secure closure helps maintain core alignment and measurement accuracy.

• Wide Operating Temperature: Functions from -25°C to +70°C for indoor installation environments .

Technical Specifications