Carlo Gavazzi CTA6X500A5A is a Class 1 split-core current transformer with a 500 A primary rating, 5 A secondary output, 7.5 VA rated output and 36 mm conductor opening for AC current measurement and energy-monitoring applications.
£118.13
The Carlo Gavazzi CTA6X500A5A is a split-core current transformer from the CTA series, designed for accurate AC current measurement in energy monitoring, metering and electrical control applications. Its split-core construction allows the transformer to be installed around an existing conductor without disconnecting the primary cable, making it particularly useful for retrofit installations.
Designed for a 500 A primary current, the CTA6X500A5A provides a standard 5 A secondary output, giving a nominal current ratio of 500:5. It offers Class 1 accuracy and a rated output of 7.5 VA, making it suitable for use with compatible energy meters and current-measurement equipment with 5 A current inputs.
A 36 mm conductor opening accommodates substantial cables while the 50–60 Hz operating frequency suits standard AC power-distribution systems. The combination of split-core installation, standardised 5 A output and compact construction makes the CTA6X500A5A a practical choice for new and existing electrical installations.
A split-core current transformer measures AC current by surrounding the primary conductor and producing a proportional secondary current for compatible measurement equipment. Unlike a solid-core transformer, the CTA6X500A5A can be opened and fitted around an existing conductor, significantly simplifying installation during electrical-system upgrades and energy-monitoring retrofits.
With a 500 A primary rating and 5 A secondary output, the CTA6X500A5A can interface with compatible energy meters and monitoring equipment designed for conventional 5 A current-transformer inputs. Its Class 1 accuracy, 7.5 VA output and 36 mm opening make it suitable for dependable current measurement in industrial and commercial electrical distribution systems.
| Current | 5 A |
|---|---|
| Manufacturer | Carlo Gavazzi |
| Series | CTA |
| Model / MPN | CTA6X500A5A |
| Product type | Split-core current transformer / current sensor |
| Rated primary current | 500 A |
| Secondary current | 5 A |
| Current ratio | 500:5 (100:1) |
| Accuracy class | Class 1 |
| Rated output | 7.5 VA |
| Hole diameter | 36 mm |
| Frequency range | 50–60 Hz |
| Construction | Split core |
| Mounting | Cable / conductor mounted |
| Secondary connection | Wire leads |
| Application | AC current measurement and energy metering |
The CTA6X500A5A is a split-core current transformer used to measure AC current and provide a proportional 5 A secondary signal to compatible energy meters and electrical monitoring equipment.
The CTA6X500A5A has a rated primary current of 500 A.
The current transformer provides a nominal 5 A secondary output, giving it a current ratio of 500:5, or 100:1.
Yes. It uses a split-core design, allowing the transformer to be opened and fitted around an existing conductor without threading the conductor through a permanently closed core.
The CTA6X500A5A has an accuracy class of Class 1, making it suitable for current measurement and energy-monitoring applications.
The transformer has a 36 mm hole diameter for accommodating the monitored conductor.
The 500 A CTA6X500A5A model has a rated output of 7.5 VA.
The current transformer is designed for 50–60 Hz AC electrical systems.
Carlo Gavazzi current transformers are designed for integration with industrial and commercial energy-monitoring equipment, while the CTA split-core format provides a practical solution for adding current measurement to new and existing electrical installations.
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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...