Carlo Gavazzi CTD9H5005AXXX solid-core current transformer with a 500 A primary rating, 5 A secondary output and class 0.5 accuracy for industrial electrical measurement and energy monitoring.
£127.56
The Carlo Gavazzi CTD9H5005AXXX is a reliable solid-core current transformer (CT) designed for accurate measurement of high AC currents in industrial electrical installations, energy monitoring systems and control panels. As part of the Carlo Gavazzi CTD9H series, it converts a rated primary current of 500 A into a standard 5 A secondary output for connection to compatible meters, monitoring equipment and protection devices.
Designed for through-feed current measurement, the CTD9H5005AXXX allows the monitored conductor or busbar to pass through the transformer opening without requiring a direct electrical connection to the primary circuit. Its solid-core construction provides a dependable solution for permanent installations where accurate current measurement and long-term reliability are required.
With a 500 A primary current rating, 5 A secondary current and accuracy class 0.5, the CTD9H5005AXXX is well suited to precision metering and energy-management applications. The CTD9H format accommodates busbars up to approximately 125 × 35 mm and also provides a 36 mm diameter opening, providing installation flexibility in industrial switchboards and distribution equipment.
Current transformers such as the Carlo Gavazzi CTD9H5005AXXX proportionally reduce high primary currents to a standard secondary current that can be safely measured by compatible instrumentation. With a 500/5 A ratio, a 500 A primary current corresponds to a 5 A secondary current, allowing meters and monitoring devices to measure high-current circuits without being connected directly in series with the full load current.
The CTD9H series is designed for industrial switchboards, distribution systems and energy-monitoring installations where dependable current measurement is essential. The combination of solid-core construction, a large busbar opening and class 0.5 measurement accuracy makes the CTD9H5005AXXX particularly suitable for permanent installations requiring precise monitoring of electrical loads.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | CTD9H |
| Model | CTD9H5005AXXX |
| Product type | Solid-core current transformer |
| Rated primary current | 500 A |
| Rated secondary current | 5 A |
| Current transformation ratio | 500/5 A (100:1) |
| Accuracy class | 0.5 |
| Rated secondary apparent power | 2 VA |
| Primary inputs | 1 |
| Opening diameter | 36 mm |
| Maximum busbar size | approx. 125 × 35 mm |
| Transformer type | Through-feed / window current transformer |
| Core type | Solid core |
| Mounting | Panel / busbar mounting |
The CTD9H5005AXXX is used to measure high AC currents in electrical distribution, energy monitoring and industrial control systems by converting a primary current of up to 500 A into a proportional 5 A secondary current.
The current transformer has a rated ratio of 500/5 A, equivalent to a transformation ratio of 100:1.
The CTD9H5005AXXX has an accuracy class of 0.5, making it suitable for applications requiring precise current and energy measurement.
The transformer provides a 36 mm diameter opening and the CTD9H format is suitable for busbars up to approximately 125 × 35 mm.
The CTD9H5005AXXX is typically installed around a conductor or busbar inside industrial switchboards, electrical distribution panels and energy-monitoring systems.
Carlo Gavazzi current transformers are designed for dependable electrical measurement and monitoring, providing industrial installers, panel builders and energy-management professionals with practical solutions for accurate current measurement in commercial and industrial power 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...
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...