Lovato DM3T0500 solid-core current transformer with a 500/5 A transformation ratio, 30 mm cable opening and support for 40 x 10 mm, 30 x 20 mm and 25 x 25 mm busbars.
£36.58
The Lovato DM3T0500 is a dependable solid-core current transformer designed for accurate 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 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 DM3T0500 accommodates round cables up to 30 mm in diameter and rectangular busbars measuring 40 × 10 mm, 30 × 20 mm or 25 × 25 mm, providing installation flexibility across a variety of switchgear configurations.
The transformer provides a rated secondary apparent power of 2.5 VA at accuracy class 0.5 and 5 VA at accuracy class 1. Its compact housing, secure secondary connection and snap-mounting capability help simplify installation while supporting reliable current measurement for industrial energy management and electrical monitoring.
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 DM3T0500 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 solid-core construction is particularly suitable for new switchboard and control-panel assemblies. During installation, the cable or busbar is passed through the transformer opening before the primary circuit is connected. This creates a secure arrangement for continuous energy measurement, electrical load monitoring and power-system analysis.
| Current | 5 A |
|---|---|
| Manufacturer | Lovato Electric |
| Series | DM3T |
| Model | DM3T0500 |
| Product type | Solid-core current transformer |
| Primary current | 500 A |
| Secondary current | 5 A |
| Transformation ratio | 500/5 A |
| Cable opening diameter | 30 mm |
| Opening width | 20 mm |
| Opening height | 30 mm |
| Compatible busbars | 40 × 10 mm, 30 × 20 mm and 25 × 25 mm |
| Burden at accuracy class 0.5 | 2.5 VA |
| Burden at accuracy class 1 | 5 VA |
| Overcurrent limiting factor | FS5 |
| Rated secondary connection | Screw connection |
| Number of primary inputs | 1 |
| Mounting method | Snap mounting |
| Calibrated | No |
| Copper rail included | No |
| Contact protection | No |
| Approximate dimensions | 71 × 62.5 × 72.5 mm |
| Conformity | IEC/EN/BS 61869-1 and IEC/EN/BS 61869-2 |
| Certification | EAC |
| Product weight | approx. 340 g |
| Package dimensions | 75 × 65 × 85 mm |
| EAN | 8013975121887 |
| HS Code | 85389091 |
The DM3T0500 is used to measure electrical currents 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 current 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 30 mm.
The transformer is suitable for rectangular busbars measuring 40 × 10 mm, 30 × 20 mm or 25 × 25 mm.
No. The DM3T0500 has a solid-core construction, so the conductor must be disconnected or passed through the transformer during panel assembly. A split-core transformer is more suitable when an existing conductor cannot be removed.
Lovato Electric current transformers are widely used by panel builders, electrical contractors and industrial engineers to provide accurate current measurement, straightforward installation and dependable integration with modern electrical monitoring equipment.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...