Carlo Gavazzi CTA5X100A5A split-core current transformer with 100 A primary rating, 5 A secondary output and Class 3 accuracy for industrial and commercial energy monitoring applications.
£92.47
The Carlo Gavazzi CTA5X100A5A is a compact split-core current transformer designed for accurate current measurement in industrial, commercial and energy monitoring applications. Part of the reliable CTA series current transformer range, it provides a simple retrofit solution for systems using energy meters or analysers with 5 A current inputs.
The split-core construction allows quick installation around existing conductors without disconnecting cables, making the CTA5X100A5A particularly suitable for upgrades, maintenance projects and installations where traditional solid-core current transformers are difficult to fit. Its compact design supports flexible integration into electrical monitoring systems.
With a 100 A primary current rating, 5 A secondary output and Class 3 accuracy, the CTA5X100A5A provides dependable current measurement for energy meters and monitoring equipment operating at 50 / 60 Hz.
Current transformers such as the Carlo Gavazzi CTA5X100A5A provide electrical isolation between high-current conductors and monitoring equipment while converting measured current into a standard secondary signal. This allows energy meters, power analysers and monitoring systems to accurately measure electrical consumption and load conditions.
The split-core design of the CTA series simplifies installation in existing electrical systems, making it ideal for retrofit projects where cables are already installed and interruption of power circuits is undesirable. Its compact construction and standard 5 A output allow integration into a wide range of industrial energy-management applications.
| Current | 5 A |
|---|---|
| Manufacturer | Carlo Gavazzi |
| Series | CTA Split Core Current Transformers |
| Model | CTA5X100A5A |
| Product type | Split-core current transformer / current sensor |
| Primary current | 100 A |
| Secondary current | 5 A |
| Current ratio | 100:5 |
| Accuracy class | Class 3 |
| Frequency | 50 / 60 Hz |
| Rated system voltage | 600 V AC |
| Rated insulation level | 0.72 kV AC |
| Dielectric strength | 3 kV AC for 1 min |
| Window diameter | 24 mm |
| Protection rating | IP20 |
| Operating temperature | -20 to +65 °C |
| Mounting type | Cable mounted / free hanging |
| Termination | Wire leads |
| Dimensions (H × W × D) | approx. 65.2 × 34 × 45.2 mm |
| Weight | approx. 165 g |
| Standards | EN 61869-2 |
The CTA5X100A5A is a split-core current transformer used to measure electrical current for energy meters, power analysers and monitoring systems with 5 A current inputs.
The current transformer has a 100 A primary current rating with a 5 A secondary output.
The CTA5X100A5A is a split-core current transformer designed for quick installation around existing conductors.
The CTA5X100A5A provides Class 3 accuracy according to EN 61869-2 requirements.
The unit is commonly installed in industrial, commercial and retrofit electrical monitoring systems connected to compatible energy meters or analysers.
Carlo Gavazzi CTA series current transformers are widely used by electrical engineers and energy-management professionals to provide reliable current measurement for industrial monitoring, retrofit installations and power analysis systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...