Carlo Gavazzi CTD8H2505AXXX CTD-8H solid-core current transformer with a 250 A primary rating, 5 A secondary output, class 3 accuracy, 5 VA rated secondary apparent power and capacity for busbars up to approximately 80 x 30 mm for industrial electrical current monitoring applications.
£114.58
The Carlo Gavazzi CTD8H2505AXXX is a robust solid-core current transformer (CT) designed for AC current measurement in electrical distribution, energy monitoring and industrial power management applications. As part of the Carlo Gavazzi CTD-8H current transformer series, it converts current flowing through a primary conductor into a standard secondary current suitable for compatible energy meters, power analysers and monitoring equipment.
This current transformer features a 250 A rated primary current and 5 A secondary output, providing a 250/5 A transformation ratio. Its accuracy class 3 and 5 VA rated secondary apparent power make it suitable for general industrial current measurement and monitoring applications where a standard 5 A secondary signal is required.
The CTD8H2505AXXX is designed for cables and large busbars, with a nominal 80 × 30 mm busbar capacity. Its rectangular opening provides a 31 mm aperture height and 81 mm maximum busbar width, while the horizontal solid-core configuration and screw-terminal secondary connections make it suitable for installation in switchboards, distribution panels and industrial electrical systems.
Current transformers such as the Carlo Gavazzi CTD8H2505AXXX allow AC current to be monitored by converting the current flowing through the primary conductor into a proportional lower secondary current. The resulting 5 A signal can be connected to compatible energy meters, multifunction meters, power analysers and electrical monitoring equipment without requiring the full primary current to pass directly through the measuring instrument.
The CTD-8H series is designed for industrial electrical distribution systems where cables or substantial busbars need to be accommodated. Its solid-core construction, standard 5 A secondary output, large rectangular conductor opening and horizontal configuration make the CTD8H2505AXXX particularly suitable for switchboards, distribution panels and monitoring systems requiring a 250 A primary current transformer.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | CTD-8H |
| Model | CTD8H2505AXXX |
| Product type | Solid-core current transformer |
| Rated primary current | 250 A |
| Rated secondary current | 5 A |
| Transformation ratio | 250/5 A |
| Ratio | 50:1 |
| Accuracy class | 3 |
| Rated secondary apparent power | 5 VA |
| Instrument security factor | FS 5 |
| Frequency range | 48–62 Hz |
| Maximum system voltage | 0.72 kV |
| Nominal busbar size | 80 × 30 mm |
| Aperture height | 31 mm |
| Maximum busbar width | 81 mm |
| Number of primary inputs | 1 |
| Secondary connection | Screw terminals |
| Mounting orientation | Horizontal |
| Construction | Solid core / through-feed |
| Dimensions (W × H × D) | approx. 116 × 87 × 40 mm |
| EAN / GTIN | 8030956044867 |
The CTD8H2505AXXX is used to convert a 250 A primary AC current into a proportional 5 A secondary current for compatible energy meters, power analysers and electrical monitoring equipment.
The current transformer has a 250/5 A ratio, equivalent to 50:1, with a rated primary current of 250 A and a rated secondary current of 5 A.
The Carlo Gavazzi CTD8H2505AXXX has an accuracy class of 3 with a rated secondary apparent power of 5 VA, making it suitable for general industrial electrical current monitoring applications.
The CTD8H2505AXXX is designed for busbars up to approximately 80 × 30 mm, with a 31 mm aperture height and a maximum busbar width of 81 mm.
The current transformer is typically installed around cables or busbars in electrical switchboards, distribution panels, energy monitoring systems and industrial power management installations requiring measurement of currents up to 250 A.
Carlo Gavazzi CTD current transformers provide dependable current measurement for energy management, electrical metering and industrial monitoring systems, with the CTD-8H series combining large conductor openings, standard secondary outputs and practical horizontal installation for electrical distribution applications.
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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...