Lovato DM2TMA0500 compact prewired split-core current transformer with a 500/5 A transformation ratio, 36 x 36 mm opening, 0.5 VA class 0.5 burden and 1.5 VA class 1 burden.
£134.73
The Lovato DM2TMA0500 is a compact, prewired split-core current transformer designed for dependable current measurement in industrial switchboards, electrical distribution panels and energy-monitoring systems. Featuring a 500/5 A transformation ratio, it converts a primary current of up to 500 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 DM2TMA0500 particularly suitable for retrofit metering projects, power-monitoring upgrades and existing electrical installations where minimising modification work and operational disruption is important.
The compact housing incorporates a 36 × 36 mm internal opening and a prewired secondary connection for straightforward installation. Operating at 50/60 Hz, the transformer provides a burden of 0.5 VA at accuracy class 0.5 and 1.5 VA at accuracy class 1, supporting reliable current measurement in commercial and industrial electrical systems.
Current transformers provide a safe method of measuring high electrical currents by converting the primary current into a proportional secondary output for compatible instrumentation. The Lovato DM2TMA0500 converts a primary current of up to 500 A into a standard 5 A secondary signal, allowing meters and monitoring devices to measure electrical loads without being connected directly to the high-current circuit.
The split-core format is particularly useful when adding energy monitoring to an existing electrical installation. Once the circuit has been safely isolated, the transformer can be opened, positioned around the conductor and securely closed without removing the cable or busbar. Its compact size and prewired construction help simplify installation in space-restricted switchboards and control panels.
| Current | 5 A |
|---|---|
| Manufacturer | Lovato Electric |
| Series | DM2TMA |
| Model | DM2TMA0500 |
| Product type | Compact prewired split-core current transformer |
| Primary current | 500 A |
| Secondary current | 5 A |
| Transformation ratio | 500/5 A |
| Internal opening | 36 × 36 mm |
| Operating frequency | 50 / 60 Hz |
| Permanent overload withstand | 120% of rated primary current |
| Burden at accuracy class 0.5 | 0.5 VA |
| Burden at accuracy class 1 | 1.5 VA |
| Rated insulation voltage | 720 V |
| Short-time thermal current | 40–60 × rated primary current for 1 second |
| Rated dynamic current | 2.5 × short-time thermal current |
| Current transformer type | Split-core |
| Secondary connection | Prewired |
| Product weight | approx. 460 g |
| Package quantity | 1 |
| Package dimensions | 120 × 100 × 50 mm |
| EAN | 8013975219072 |
| HS Code | 85043180 |
The DM2TMA0500 is used to measure electrical currents in distribution panels, switchboards and energy-monitoring systems. It converts a primary current of up to 500 A into a standard 5 A secondary output.
The current transformer has a 500/5 A transformation ratio, meaning that a nominal 500 A primary current 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 after the electrical circuit has been safely isolated.
The transformer has a 36 × 36 mm internal opening suitable for compatible cables and busbars.
The transformer provides a burden of 0.5 VA at accuracy class 0.5 and 1.5 VA at accuracy class 1, depending on the connected secondary measuring circuit.
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...