Low-Output Split Core Current Transformer – 50–250A Primary, 40–100mA Secondary

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Low-Output Split Core Current Transformer – 50–250A Primary, 40–100mA Secondary

Blurb

Compact split-core current transformer designed for 50A–250A conductors with low-current mA secondary output. Ideal for energy meters, IoT power monitors, and data logging systems requiring safe, low-level signal inputs.

Description

This Split Core Current Transformer (CT) is engineered for accurate AC current measurement in low to medium current applications, delivering a milliamp secondary output (40mA–100mA) for safe integration with modern energy monitoring devices.

Designed for 50A to 250A primary conductors, the transformer is suitable for:

• IoT energy monitoring systems

• Digital power meters with mA inputs

• Building Management Systems (BMS)

• Data loggers and remote telemetry units (RTUs)

• Smart facility energy tracking

Unlike traditional 5A secondary CTs, this low-output design improves safety and simplifies wiring when interfacing with electronic monitoring equipment.

The split-core construction enables non-intrusive installation without disconnecting existing cabling, making it ideal for retrofit projects and operational facilities where downtime must be minimised.

Operating at 50–60Hz, the CT maintains a phase angle error of less than 2° at 50% rated current, supporting reliable load measurement and trend analysis.

Typical applications include:

• Commercial distribution boards

• Solar inverter AC outputs

• Sub-circuit monitoring

• HVAC load tracking

• Industrial control panels