Carlo Gavazzi CTD4X4005AXXX is a Class 0.5 solid-core current transformer with a 400 A AC primary rating, 5 A secondary output and 51 mm aperture for industrial energy metering and electrical current monitoring.
£79.60
The Carlo Gavazzi CTD4X4005AXXX is a robust solid-core AC current transformer designed for accurate current measurement in industrial power monitoring, energy metering and electrical distribution applications. As part of the Carlo Gavazzi CTD-4X Series, it converts a rated primary current of 400 A AC into a standard 5 A secondary output for connection to compatible energy meters, power analysers and monitoring equipment.
With a transformation ratio of 400/5 A, the CTD4X4005AXXX enables high-current electrical circuits to be monitored using standard 5 A measurement inputs. Its Accuracy Class 0.5 provides dependable measurement performance for industrial energy management, load monitoring and electrical metering systems.
The CTD4X4005AXXX features a large 51 mm conductor aperture and accommodates busbars up to 64 mm wide. Its stepped aperture design supports both cables and busbars, while screw terminal connections and flexible DIN rail, panel or busbar mounting options simplify integration into switchboards, distribution panels and industrial electrical installations.
Current transformers such as the Carlo Gavazzi CTD4X4005AXXX allow high AC currents to be measured by transforming the primary current into a proportional secondary current that can be safely handled by standard electrical instrumentation. At its rated primary current of 400 A, the CTD4X4005AXXX provides a 5 A secondary output for compatible energy meters, power analysers and monitoring equipment.
The CTD-4X solid-core design is particularly suited to permanent installations in switchboards, distribution panels and industrial electrical systems. Its Class 0.5 accuracy, large conductor opening, stepped aperture and support for substantial busbars make the CTD4X4005AXXX a practical solution for accurate energy measurement, load monitoring and electrical power management.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | CTD-4X |
| Model | CTD4X4005AXXX |
| Product type | Solid-core AC current transformer |
| Rated primary current | 400 A AC |
| Rated secondary current | 5 A AC |
| Current ratio | 400/5 A |
| Transformation ratio | 80:1 |
| Accuracy class | 0.5 |
| Rated secondary apparent power | 6 VA |
| Security factor | FS5 |
| Opening diameter | 51 mm |
| Maximum busbar width | 64 mm |
| Maximum horizontal busbar | 64 × 20 mm or 51 × 43 mm |
| Maximum vertical busbar | 51 × 31 mm |
| Core type | Solid core |
| Transformer type | Through-feed current transformer |
| Aperture type | Stepped |
| Connection | Screw terminals |
| Terminal arrangement | Double set of connection terminals |
| Mounting type | DIN rail / panel / busbar |
| Application | AC current measurement and energy monitoring |
The Carlo Gavazzi CTD4X4005AXXX is a solid-core current transformer used to measure high AC currents in industrial electrical systems and provide a standard secondary current for compatible energy meters, power analysers and monitoring equipment.
The CTD4X4005AXXX has a current transformer ratio of 400/5 A, meaning a rated primary current of 400 A produces a 5 A secondary output.
The Carlo Gavazzi CTD4X4005AXXX provides Accuracy Class 0.5, making it suitable for accurate electrical current and energy measurement applications.
The current transformer has a 51 mm opening diameter for the primary conductor and accommodates busbars up to 64 mm wide.
The CTD4X4005AXXX has a rated secondary apparent power of 6 VA and a security factor of FS5.
No. The CTD4X4005AXXX uses a solid-core construction, so the monitored cable or busbar must pass through the transformer opening during installation.
Carlo Gavazzi CTD Series current transformers provide dependable current measurement for industrial energy management, power monitoring and electrical distribution systems, combining standard secondary outputs with robust solid-core construction and accurate measurement performance.
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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...