Lovato DM3TP0500 high-accuracy solid-core current transformer with a 500/5 A transformation ratio, 52 mm cable opening, class 0.5S and class 0.5 accuracy for precision energy measurement.
£106.05
The Lovato DM3TP0500 is a high-accuracy solid-core current transformer designed for dependable current measurement in industrial switchboards, electrical distribution panels and precision 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, multifunction measuring instruments, ammeters and power analysers.
Its solid-core construction provides a secure and durable measuring solution for new electrical installations where the primary conductor can be routed through the transformer during panel assembly. The DM3TP0500 accommodates round cables up to 52 mm in diameter and rectangular busbars measuring 60 × 20 mm or 50 × 25 mm, making it suitable for substantial conductors used in industrial power-distribution equipment.
Designed for applications requiring enhanced measurement performance, the DM3TP0500 provides a rated burden of 3.75 VA at accuracy class 0.5S and 5 VA at accuracy class 0.5. Its robust construction, 50–60 Hz operating frequency and 720 V insulation rating support precise, stable current measurement in demanding commercial and industrial environments.
Current transformers provide a safe method of measuring high electrical currents by converting the primary current into a proportional lower-current output for compatible instrumentation. The Lovato DM3TP0500 converts a primary current of up to 500 A into a standard 5 A secondary signal, allowing meters and monitoring equipment to measure electrical loads without being connected directly to the high-current circuit.
The class 0.5S measurement capability makes this transformer especially suitable for applications where accurate readings are required across a wider operating range. Its solid-core construction is intended for new switchboard and control-panel assemblies, with the cable or busbar passed through the transformer before the primary circuit is connected.
| Current | 5 A |
|---|---|
| Manufacturer | Lovato Electric |
| Series | DM3TP |
| Model | DM3TP0500 |
| Product type | High-accuracy solid-core current transformer |
| Primary current | 500 A |
| Secondary current | 5 A |
| Transformation ratio | 500/5 A |
| Cable opening diameter | 52 mm |
| Compatible busbars | 60 × 20 mm and 50 × 25 mm |
| Operating frequency | 50–60 Hz |
| Burden at accuracy class 0.5S | 3.75 VA |
| Burden at accuracy class 0.5 | 5 VA |
| Continuous overload withstand | 120% of rated primary current |
| 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 | Solid-core |
| Conformity | IEC/EN/BS 61869-1 and IEC/EN/BS 61869-2 |
| Certification | EAC |
| HS Code | 85043180 |
The DM3TP0500 is used for accurate current measurement in switchboards, distribution panels and energy-monitoring systems. It converts a primary current of up to 500 A into a standard 5 A secondary output.
The transformer has a 500/5 A transformation ratio, meaning that a nominal primary current of 500 A corresponds to a 5 A secondary current.
The transformer accommodates a round cable with a maximum diameter of approximately 52 mm.
The transformer is suitable for rectangular busbars measuring 60 × 20 mm or 50 × 25 mm.
The transformer provides a burden of 3.75 VA at accuracy class 0.5S and 5 VA at accuracy class 0.5, making it suitable for precision current and energy measurement.
Lovato Electric current transformers are used by panel builders, electrical contractors and energy-management professionals to provide accurate current measurement, dependable integration and reliable long-term performance in industrial power systems.
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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...