CTA5X250A5A

Overview

The Carlo Gavazzi CTA5X250A5A is a split core industrial current transformer designed for electrical monitoring applications. It features a primary current rating of 250 A and a secondary output of 5 A, resulting in a turns ratio of 250:5. The device operates within a frequency range of 50 Hz to 60 Hz and supports a maximum voltage of 600 V AC. Physical dimensions include a height of 65.2 mm, length of 45.2 mm, and width of 34 mm, with a bore size of 24 mm. It utilizes wire leads for termination and is rated for free hanging installation. The operational temperature range spans from -20 °C to +65 °C.

Feature Summary

• Split core design allows for installation around existing conductors without disconnecting the circuit.
• Provides accurate current sensing for industrial power analysis and metering systems.
• Robust construction suitable for environments with temperatures between -20 °C and +65 °C.

Applications

• Integration with power analyzers for three-phase system monitoring
• Industrial energy management and consumption tracking
• Electrical panel current measurement and protection schemes

Procurement Notes

Verify that the specific order matches the CTA5X250A5A designation to ensure the correct 250:5 ratio and 24 mm bore size. Confirm compatibility with downstream instrumentation requiring a 5 A secondary input. Check regional availability as distribution status may vary by location. Ensure environmental conditions fall within the specified -20 °C to +65 °C operating range for reliable performance.

Selection Notes

Select this component when a non-intrusive current measurement solution is required for circuits carrying up to 250 A. The 24 mm aperture accommodates standard busbars or thick cables commonly found in industrial settings. Choose this model over fixed-core alternatives where retrofitting or maintenance access is a priority. Ensure the connected measuring device accepts a 5 A secondary signal to match the transformer's output specification.

Part Context

This unit belongs to the CTA5X series of split core current transformers manufactured by Carlo Gavazzi. The series includes variants with different primary ratings such as 150 A, 200 A, and 300 A, all sharing similar physical dimensions and mounting styles. These devices are part of Carlo Gavazzi's broader portfolio of industrial automation sensors and power monitoring components.

Replacement Considerations

Direct substitutes within the same family include CTA5X150A5A, CTA5X200A5A, and CTA5X300A5A. Selection depends on matching the primary current requirement to the specific load. Verify that the replacement maintains the 5 A secondary output and compatible bore size for the existing conductor.

FAQ

What is the bore diameter of the CTA5X250A5A?

The internal bore diameter is 24 mm, allowing it to fit around conductors of that maximum thickness.

Does this transformer support DC current measurement?

No, the CTA5X250A5A is designed for AC applications only, operating within the 50 Hz to 60 Hz frequency range.

How is the CTA5X250A5A mounted?

It is designed for free hanging installation using its integrated mounting points.