Carlo Gavazzi CTD3X4005AXXX solid core current transformer with 400 A primary current and 5 A secondary output for industrial current measurement applications.
£50.66
The Carlo Gavazzi CTD3X4005AXXX is a high-quality solid core AC current transformer designed for accurate current measurement and monitoring in industrial power systems, energy management installations and electrical control applications. As part of the reliable Carlo Gavazzi CTD-3X current transformer series, it provides dependable conversion of high primary currents into a standard secondary output suitable for metering and protection equipment.
This current transformer is designed for applications requiring reliable measurement of large AC currents while maintaining electrical isolation between the primary circuit and measurement devices. The integrated mounting solution allows flexible installation on DIN rails, panels or bus-bar systems, making it suitable for a wide range of industrial electrical installations.
With a 400 A primary current rating and 5 A secondary output, the CTD3X4005AXXX provides accurate current transformation for monitoring and measurement systems. Its 41 mm window diameter and robust CTD-3X construction make it suitable for cable and bus-bar applications in industrial switchboards and control panels.
Current transformers such as the Carlo Gavazzi CTD3X4005AXXX allow high electrical currents to be safely measured by reducing the primary current to a standard secondary signal. This enables accurate monitoring through energy meters, protection relays and industrial measurement equipment.
The CTD-3X series combines accurate measurement performance with flexible mounting options, helping electrical engineers integrate current monitoring into switchboards, distribution systems and automation installations.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | CTD-3X |
| Model | CTD3X4005AXXX |
| Product type | Solid core AC current transformer |
| Primary current | 400 A |
| Secondary current | 5 A |
| Current ratio | 400:5 |
| Accuracy class | Class 0.5 |
| Frequency range | 45–65 Hz |
| Window diameter | 41 mm |
| Maximum bus-bar size | 51 mm × 15 mm |
| Mounting type | DIN rail / panel / bus-bar mounting |
| Terminal type | Screw connection |
| Rated insulation level | 3 kV / 1 min at 50 Hz |
| Maximum system voltage | 0.72 kV |
| Protection rating | IP20 with terminal covers |
The CTD3X4005AXXX is used to measure high AC currents and provide an isolated 5 A secondary output for electrical metering and monitoring equipment.
The current transformer has a 400:5 ratio, with a 400 A primary current and 5 A secondary output.
The transformer provides a Class 0.5 accuracy rating for reliable current measurement.
The CTD3X4005AXXX supports DIN rail, panel and bus-bar mounting for flexible installation in electrical systems.
It is suitable for industrial switchboards, energy monitoring systems, power measurement installations and electrical protection applications.
Carlo Gavazzi CTD-3X current transformers are widely used in industrial energy measurement and control applications where accurate current monitoring, dependable operation and flexible installation are required.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...