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CTA5X300A5A – CURRENT SENSOR CTA5X300A5A
Carlo Gavazzi CTA5X300A5A is a Class 1 split-core current transformer with a 300 A primary rating, 5 A secondary output, 2.5 VA burden and 24 mm aperture for energy metering and retrofit current measurement applications.
£82.54
Why Choose the Carlo Gavazzi CTA5X300A5A Current Sensor?
The Carlo Gavazzi CTA5X300A5A is a split-core current transformer from the CTA series, designed for accurate AC current measurement in energy monitoring, metering and electrical distribution applications. With a rated primary current of 300 A and a standard 5 A secondary output, it can be connected to compatible energy meters and measuring instruments equipped with 5 A current inputs.
Its split-core construction allows the transformer to be fitted around an existing conductor without disconnecting or removing the cable, making the CTA5X300A5A particularly useful for retrofit installations. The unit provides a 24 mm aperture, Class 1 accuracy and a rated burden of 2.5 VA, delivering dependable measurement performance for commercial and industrial energy-monitoring systems.
Designed for 50–60 Hz electrical systems, the CTA5X300A5A combines compact dimensions with a pre-wired 1 m secondary cable for straightforward installation. Its split-core format provides a practical solution where conventional solid-core current transformers would require existing power conductors to be disconnected during installation.
Key Advantages
- Split-core design enables installation around existing conductors.
- 300 A primary current rating for commercial and industrial measurement applications.
- Standard 5 A secondary output for compatible meters and monitoring equipment.
- Class 1 accuracy provides reliable current measurement.
- 2.5 VA rated burden at Class 1 accuracy.
- 24 mm conductor aperture accommodates a wide range of electrical cables.
- Suitable for 50–60 Hz AC electrical systems.
- Pre-wired secondary cable supports quick and convenient installation.
Key Features
- Carlo Gavazzi CTA series current transformer.
- Split-core construction.
- 300 A rated primary current.
- 5 A secondary current.
- Current transformation ratio of 300:5.
- Class 1 measurement accuracy.
- 2.5 VA rated burden.
- 24 mm nominal aperture diameter.
- 50–60 Hz operating frequency.
- Supplied with a 1 m secondary cable.
- Compact format suitable for retrofit installations.
- Designed for metering and energy-monitoring applications.
Fast Retrofit Current Measurement
Split-core current transformers are particularly useful when adding energy measurement to an existing electrical installation. Instead of disconnecting the primary conductor and feeding it through a closed transformer core, the CTA5X300A5A can be opened and installed around the conductor, helping reduce installation work and disruption when retrofitting metering equipment.
The transformer's 300:5 current ratio converts primary currents of up to 300 A into a standard 5 A secondary signal for compatible measurement equipment. This makes the CTA5X300A5A well suited to Carlo Gavazzi energy meters and other metering devices designed to accept conventional 5 A current transformer inputs.
Typical Applications
- Industrial energy monitoring systems.
- Commercial building energy metering.
- Electrical distribution boards and switchboards.
- Retrofit current measurement installations.
- Energy management and sub-metering systems.
- Load monitoring and electrical consumption analysis.
- Control panels and industrial automation systems.
Technical Specifications
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| IP Rating | IP24 | |
|---|---|---|
| Manufacturer | Carlo Gavazzi | |
| Series | CTA | |
| Model | CTA5X300A5A | |
| Product type | Split-core current transformer / current sensor | |
| Rated primary current | 300 A | |
| Rated secondary current | 5 A | |
| Current ratio | 300:5 | |
| Accuracy class | Class 1 | |
| Rated burden | 2.5 VA | |
| Frequency range | 50–60 Hz | |
| Hole diameter | 24 mm nominal | |
| Secondary cable length | 1 m | |
| Construction | Split core | |
| Mounting | Cable / conductor mounted | |
| Application | Current measurement and energy metering | |
| Operating temperature | -20 to +65 °C | |
| Weight | Approximately 165 g | |
| Protection rating | IP24 | |
| Applicable standard | EN 61869-2 | |
| Certifications | CE, cURus |
Frequently Asked Questions
What is the Carlo Gavazzi CTA5X300A5A used for?
The CTA5X300A5A is a split-core current transformer used to measure AC current for energy meters, monitoring systems and other electrical measuring equipment with compatible 5 A current inputs.
What is the current ratio of the CTA5X300A5A?
The CTA5X300A5A has a 300:5 current ratio, with a rated primary current of 300 A and a rated secondary output of 5 A.
What accuracy class does the CTA5X300A5A provide?
The Carlo Gavazzi CTA5X300A5A provides Class 1 accuracy and has a rated burden of 2.5 VA.
What conductor size can pass through the CTA5X300A5A?
The current transformer has a nominal 24 mm diameter aperture, allowing it to be installed around a suitably sized electrical conductor.
Why use a split-core current transformer?
A split-core current transformer can be opened and fitted around an existing conductor, making it particularly useful for retrofit energy-monitoring installations where disconnecting the existing power cable would be inconvenient.
Reliable Current Measurement from Carlo Gavazzi
Carlo Gavazzi CTA split-core current transformers provide convenient retrofit installation and dependable current measurement for energy meters, monitoring equipment and electrical energy-management systems.
