Lovato DM3TA0800 split-core current transformer with 800/5 A ratio, 80 x 120 mm opening, class 0.5 and class 1 accuracy, designed for industrial energy monitoring.
£170.59
The Lovato DM3TA0800 is a heavy-duty split-core current transformer designed for accurate current measurement in industrial switchboards, electrical distribution panels and energy-monitoring systems. Featuring an 800/5 A transformation ratio, it converts a primary current of up to 800 A into a standard 5 A secondary output for connection to compatible energy meters, ammeters, multifunction measuring instruments and power analysers.
Its split-core construction allows the transformer to be opened and installed around an existing cable or busbar without removing or rerouting the primary conductor. This makes the DM3TA0800 particularly suitable for retrofit metering projects, electrical system upgrades and existing installations where downtime and installation work must be kept to a minimum.
With a large 80 × 120 mm internal opening, the DM3TA0800 accommodates substantial cables and rectangular busbars commonly used in high-current distribution systems. Operating at 50–60 Hz, it provides a burden of 3 VA at accuracy class 0.5 and 7.5 VA at accuracy class 1, delivering dependable current measurement for demanding industrial applications.
Current transformers safely convert high primary currents into proportional low-current outputs suitable for electrical measuring instruments. The Lovato DM3TA0800 converts currents up to 800 A into a standard 5 A secondary output, allowing accurate monitoring without connecting instruments directly to the power circuit.
The split-core construction is especially valuable for retrofit applications. Once the electrical circuit has been safely isolated, the transformer can be opened and installed around an existing conductor, significantly reducing installation time compared with conventional solid-core current transformers.
| Current | 5 A |
|---|---|
| Manufacturer | Lovato Electric |
| Series | DM3TA |
| Model | DM3TA0800 |
| Product type | Split-core current transformer |
| Primary current | 800 A |
| Secondary current | 5 A |
| Transformation ratio | 800/5 A |
| Internal opening | 80 × 120 mm |
| Operating frequency | 50–60 Hz |
| Accuracy class 0.5 burden | 3 VA |
| Accuracy class 1 burden | 7.5 VA |
| Continuous overload withstand | 120% of rated primary current |
| Rated insulation voltage | 720 V |
| Short-time thermal current | 40–60 × rated current for 1 second |
| Rated dynamic current | 2.5 × Ith |
| Insulation | Dry type, Class E |
| Terminal type | Screw terminals |
| Fixing | Screw fixing |
| Protection rating | IP30 |
| Operating temperature | -25°C to +50°C |
| Storage temperature | -40°C to +80°C |
| Maximum relative humidity | 90% |
| Weight | Approx. 1.25 kg |
| Packaged weight | Approx. 1.37 kg |
| Package dimensions | 80 × 178 × 220 mm |
| EAN | 8013975178751 |
| HS Code | 85389091 |
The DM3TA0800 measures currents up to 800 A and supplies a standard 5 A secondary output for energy meters, power analysers and electrical measuring equipment.
Yes. Its split-core design allows installation around an existing conductor after the electrical circuit has been safely isolated.
The DM3TA0800 features a large 80 × 120 mm internal opening suitable for substantial cables and busbars.
The transformer provides 3 VA at accuracy class 0.5 and 7.5 VA at accuracy class 1 depending on the connected measuring circuit.
It is commonly installed in industrial switchboards, power-distribution systems, commercial buildings and energy-monitoring installations requiring retrofit current measurement.
Lovato Electric current transformers are trusted by panel builders, electrical contractors and industrial engineers for dependable current measurement, straightforward installation and long-term reliability.
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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...