Lovato DM4TA4000 split-core current transformer with a 4000/5 A ratio, an 80 × 160 mm internal opening and Class 0.5 or Class 1 measurement performance.
£342.66
The Lovato DM4TA4000 is a high-capacity split-core current transformer designed for accurate current measurement in industrial switchboards, electrical distribution systems and energy monitoring installations. With a rated primary current of 4000 A and a standard 5 A secondary output, it converts high line currents into a safe and proportional signal for compatible energy meters, network analysers, ammeters and protection equipment.
Unlike a conventional solid-core transformer, the DM4TA4000 can be opened and installed around an existing conductor or busbar without disconnecting the primary circuit. This split-core construction makes it particularly suitable for retrofit projects, energy-management upgrades and maintenance work where minimising downtime and installation disruption is essential.
The transformer features a substantial 80 × 160 mm internal opening for large conductors and busbar assemblies. It provides a rated burden of 20 VA at accuracy class 0.5 and 25 VA at accuracy class 1, delivering reliable measurement performance for demanding high-current power distribution applications.
Current transformers reduce high primary currents to a standard secondary value that can be safely measured by compatible electrical instruments. The Lovato DM4TA4000 converts a primary current of up to 4000 A into a proportional 5 A signal, allowing connected equipment to monitor electrical loads without carrying the full line current.
Its split-core construction allows the transformer to be opened and positioned around an installed conductor or busbar. This provides a practical solution for adding energy monitoring, upgrading an existing metering system or replacing a current transformer where dismantling the primary circuit would be difficult, costly or disruptive.
| Current | 5 A |
|---|---|
| Manufacturer | Lovato Electric |
| Series | DM |
| Model | DM4TA4000 |
| Product type | Split-core current transformer |
| Primary current | 4000 A |
| Secondary current | 5 A |
| Transformation ratio | 4000/5 A |
| Operating frequency | 50/60 Hz |
| Accuracy class 0.5 burden | 20 VA |
| Accuracy class 1 burden | 25 VA |
| Accuracy limiting factor | FS 5 |
| Overload withstand | 120% of rated primary current |
| Rated insulation voltage | 720 V AC |
| Rated short-time thermal current | 40 to 60 × Ipn for 1 second |
| Rated dynamic current | 2.5 × Ith |
| Internal opening | 80 × 160 mm |
| Secondary connection | Screw terminals |
| Fixing method | Screw fixing |
| Construction | Split core |
| Dimensions (H × W × D) | Approximately 245 × 184 × 68 mm |
| Net weight | Approximately 3.76 kg |
| EAN | 8013975187319 |
| Applicable standards | IEC/EN current transformer standards |
| HS Code | 85389091 |
The Lovato DM4TA4000 converts high primary currents into a proportional 5 A secondary signal for energy meters, network analysers, ammeters and electrical protection equipment.
The transformer has a current transformation ratio of 4000/5 A, meaning that a 4000 A primary current produces a 5 A secondary output.
A split-core current transformer can be opened and installed around an existing conductor or busbar without disconnecting the primary circuit, helping simplify retrofit and maintenance work.
The DM4TA4000 has an 80 × 160 mm internal opening suitable for large conductors and busbar assemblies.
The DM4TA4000 provides 20 VA at accuracy class 0.5 and 25 VA at accuracy class 1.
Lovato Electric split-core current transformers are widely used by panel builders, electrical contractors and industrial engineers for dependable current measurement, convenient retrofit installation and effective energy monitoring.
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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...