Accu-CT Split-Core Current Transformer 333mV Sensor, Onset Computer Corporation

The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.

• Unprecedented Linearity

• Window Opening 0.75 inch
• The Accu-CT revenue grade, split-core current transformer offers outstanding linearity and phase angle accuracy with a unique one-handed opening and closing mechanism
• Safe: burden resistor built-in, 333 mVac voltage output at rated full scale current, no shorting blocks needed
• IEEE C57.13 and IEC 60044-1 accuracy: over full temperature range and down to 1% of rated current
• Exceptionally low phase angle error: essential for accurate power and energy measurements
• Glove-friendly: easy to open and install with one hand while wearing safety gloves

The Accu-CT split-core current transformer 333 mV Sensor is designed to provide accurate and reliable measurement of AC current in electrical circuits for use with compatible data loggers and monitoring systems. Featuring a revenue-grade split-core design, this sensor allows easy one-handed installation around live conductors without disconnecting wires, making it well suited for retrofit installations and field-setups where minimal disruption is desired. The transformer produces a low-voltage output proportional to current, enabling safe interface with data acquisition equipment while minimizing exposure to hazardous voltages.

With built-in burden resistance and high linearity across its measurement range, the sensor delivers reliable performance and low phase angle error critical to accurate power and energy analysis. Its construction meets recognized accuracy standards and safety approvals, supporting use in commercial, industrial, and research monitoring applications where precise current data is required. The sensor’s compact form factor, long lead cables, and rugged build make it practical for ongoing monitoring projects in panels, machinery circuits, and energy management systems.

Onset Computer Corporation.

Certifications: UL recognized, CE mark, RoHS