Lovato DM2TA0400 split-core current transformer with a 400/5 A transformation ratio, 80 x 80 mm opening, 1.5 VA class 0.5 burden and 3 VA class 1 burden for electrical metering and energy monitoring.
£133.60
The Lovato DM2TA0400 is a dependable split-core current transformer designed for accurate current measurement in industrial switchboards, electrical distribution panels and energy-monitoring systems. Featuring a 400/5 A transformation ratio, it converts a primary current of up to 400 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 enables the transformer to be opened and installed around an existing conductor or busbar without disconnecting the primary circuit. This makes the DM2TA0400 particularly suitable for retrofit metering projects, power-monitoring upgrades and operational installations where reducing downtime and avoiding extensive electrical modifications are important.
The transformer features a large 80 × 80 mm internal opening suitable for substantial cables and busbars used within industrial power-distribution equipment. Operating at 50/60 Hz, it provides a burden of 1.5 VA at accuracy class 0.5 and 3 VA at accuracy class 1, supporting dependable current measurement across a wide range of electrical monitoring applications.
Current transformers provide a safe method of measuring high electrical currents by converting the primary current into a proportional secondary signal suitable for compatible instrumentation. The Lovato DM2TA0400 converts a primary current of up to 400 A into a standard 5 A secondary output, enabling meters and monitoring equipment to measure electrical loads without being connected directly to the high-current circuit.
The split-core design is particularly valuable when adding metering equipment to an existing electrical installation. The transformer can be opened, positioned around the cable or busbar and securely closed without removing the primary conductor. This helps reduce installation labour, electrical system modification and operational disruption.
| Current | 5 A |
|---|---|
| Manufacturer | Lovato Electric |
| Series | DM2TA |
| Model | DM2TA0400 |
| Product type | Split-core current transformer |
| Primary current | 400 A |
| Secondary current | 5 A |
| Transformation ratio | 400/5 A |
| Internal opening | 80 × 80 mm |
| Operating frequency | 50/60 Hz |
| Overload withstand | 120% of rated primary current |
| Burden at accuracy class 0.5 | 1.5 VA |
| Burden at accuracy class 1 | 3 VA |
| Rated insulation voltage | 720 V |
| Short-time thermal current | 40 to 60 × Ipn for 1 second |
| Dynamic current | 2.5 × short-time thermal current |
| Insulation type | Dry, class E |
| Secondary connection | Screw terminals |
| Fixing method | Screw fixing |
| Protection rating | IP30 |
| Operating temperature | -25°C to +50°C |
| Storage temperature | -40°C to +80°C |
| Maximum relative humidity | 90% |
| Conformity | IEC/EN 60044-1 |
| Certification | EAC |
| Product weight | approx. 1050 g |
| Packaged weight | approx. 1072 g |
| Package dimensions | 81 × 177 × 184 mm |
| EAN | 8013975178669 |
| HS Code | 85389091 |
The DM2TA0400 is used to measure electrical currents in switchboards, distribution panels and energy-monitoring systems. It converts a primary current of up to 400 A into a standard 5 A secondary output.
The current transformer has a 400/5 A transformation ratio, meaning that a nominal primary current of 400 A corresponds to a 5 A secondary current.
Yes. Its split-core construction allows the transformer to be opened and fitted around an existing cable or busbar without disconnecting the primary conductor.
The transformer has a large 80 × 80 mm internal opening, making it suitable for substantial cables and rectangular busbars within those dimensions.
The transformer provides a burden of 1.5 VA at accuracy class 0.5 and 3 VA at accuracy class 1, depending on the connected secondary circuit and measuring equipment.
Lovato Electric current transformers are used by panel builders, electrical contractors and industrial engineers to provide reliable current measurement, practical retrofit installation and dependable integration with modern energy-monitoring equipment.
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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...