Lovato DM1TA0400 split-core current transformer with a 400/5 A transformation ratio, 52 × 80 mm opening, Class 0.5 accuracy at 1.5 VA and Class 1 accuracy at 3 VA for electrical metering and energy monitoring.
£114.65
The Lovato DM1TA0400 is a high-performance split-core current transformer (CT) designed for accurate current measurement in industrial and commercial electrical systems. Featuring a 400/5 A transformation ratio, it converts high primary currents into a standard 5 A secondary output suitable for multifunction power meters, energy analysers and protection devices.
Its split-core design allows installation around an existing cable or busbar without disconnecting the primary conductor, making it ideal for retrofit energy monitoring projects, electrical upgrades and maintenance work where downtime must be minimised.
With a large 52 × 80 mm internal window, Class 0.5 accuracy at 1.5 VA and Class 1 accuracy at 3 VA, the DM1TA0400 delivers dependable performance for switchboards, distribution systems and industrial automation installations. It is manufactured to IEC standards and offers robust long-term reliability.
The split-core construction enables the Lovato DM1TA0400 to be installed around existing conductors without disconnecting them, significantly reducing installation time and avoiding unnecessary power interruptions. This makes it particularly valuable when upgrading existing switchboards with energy monitoring equipment.
Its 5 A secondary output is compatible with a wide range of multifunction meters and power analysers, while the generous aperture accommodates larger conductors and busbars commonly found in industrial electrical installations.
| Current | 5 A |
|---|---|
| Manufacturer | Lovato Electric |
| Series | DM |
| Model | DM1TA0400 |
| Product type | Split-core current transformer |
| Primary current | 400 A |
| Secondary current | 5 A |
| Transformation ratio | 400/5 A |
| Accuracy class | Class 0.5 at 1.5 VA / Class 1 at 3 VA |
| Rated frequency | 50 / 60 Hz |
| Internal opening | 52 × 80 mm |
| Core type | Split core |
| Rated insulation voltage | 720 V |
| Continuous overload | 120% of rated primary current |
| Short-time thermal withstand | 40 to 60 × rated current for 1 second |
| Dynamic withstand | 2.5 × Ith |
| Insulation class | Class E |
| Connection type | Screw terminals |
| Mounting | Screw fixing |
| Protection rating | IP30 |
| Operating temperature | -25°C to +50°C |
| Storage temperature | -40°C to +80°C |
| Relative humidity | 90% |
| Weight | Approximately 900 g |
| Conformity | IEC/EN 60044-1 |
| Certification | EAC |
| HS Code | 85389091 |
The DM1TA0400 converts a primary current of up to 400 A into a standard 5 A secondary output for electrical metering, monitoring and protection equipment.
Yes. Its split-core design allows installation around an existing conductor without removing cable terminations.
The transformer features a 52 × 80 mm internal opening, making it suitable for large cables and busbars.
It offers Class 0.5 accuracy at 1.5 VA and Class 1 accuracy at 3 VA, making it suitable for both precision metering and general monitoring.
The DM1TA0400 is designed for equipment with a standard 5 A current transformer input, including multifunction power meters, energy analysers and protection relays.
Lovato DM split-core current transformers are trusted by electrical engineers, panel builders and energy management specialists for accurate current measurement, simple retrofit installation and dependable long-term 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...