Split Core Current Transformer – 5–150A Primary, 100–333mV Output

This Split Core Current Transformer is designed for accurate AC current measurement in low to medium current circuits across commercial and light industrial environments.

Supporting a primary current range of 5A to 150A, the unit provides a 100–333mV secondary voltage output, making it suitable for direct connection to modern digital energy meters and monitoring systems.

The millivolt output design offers improved safety compared to traditional 1A or 5A current-output CTs, simplifying integration with:

• Digital energy meters

• IoT gateways and cloud monitoring systems

• Building Management Systems (BMS)

• PLC and SCADA platforms

• Data loggers and remote telemetry units

The split-core construction enables quick, non-intrusive installation without disconnecting live conductors—ideal for retrofit energy audits and operational facilities where downtime must be minimised.

Operating at 50–60Hz, the transformer maintains a phase angle error of less than 2° at 50% rated current, ensuring reliable load monitoring and energy data accuracy.

Typical applications include:

• Lighting circuits

• Power outlets and sub-boards

• HVAC equipment monitoring

• Solar inverter AC circuits

• Small machinery and plant systems

• Energy efficiency upgrades