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DM2T0400 – CURRENT TRANSFORMER 400/5A
Lovato DM2T0400 solid-core current transformer with a 400/5 A transformation ratio, 23 mm cable opening, 2 VA class 0.5 burden and 3 VA class 1 burden for electrical current measurement.
£18.41
Why Choose the Lovato DM2T0400 Solid-Core Current Transformer?
The Lovato DM2T0400 is a dependable solid-core current transformer designed for accurate current measurement in industrial switchboards, commercial 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 ammeters, energy meters, multifunction measuring instruments and protection relays.
Its solid-core construction provides a robust measurement solution for new electrical installations where the primary conductor can be routed through the transformer during panel assembly. The DM2T0400 accommodates round cables up to 23 mm in diameter and supports several commonly used rectangular busbar sizes, providing installation flexibility within low-voltage switchgear and industrial control panels.
Operating at 50/60 Hz, the transformer provides a rated burden of 2 VA at accuracy class 0.5 and 3 VA at accuracy class 1. Its compact housing, screw-terminal secondary connection and snap-mounting capability make it straightforward to integrate into modern electrical panels while delivering reliable current measurement.
Key Advantages
- Reliable solid-core current transformer for switchboard and panel installations.
- 400/5 A transformation ratio for standard industrial metering equipment.
- Suitable for round cables up to 23 mm diameter.
- Compatible with several commonly used rectangular busbar sizes.
- Class 0.5 and class 1 accuracy options for dependable current measurement.
- Compact construction with screw terminals and snap-mounting capability.
Key Features
- Lovato DM2T series current transformer.
- 400 A rated primary current.
- 5 A rated secondary current.
- Solid-core construction for secure conductor installation.
- 23 mm circular cable opening.
- Suitable for 30 × 10 mm, 25 × 12.5 mm and 20 × 15 mm busbars.
- 2 VA burden at accuracy class 0.5.
- 3 VA burden at accuracy class 1.
- FS5 overcurrent limiting factor.
- 720 V rated insulation voltage.
Accurate Current Measurement for Electrical Distribution
Current transformers provide a safe method of measuring high electrical currents by converting the primary current into a proportional lower-current signal for compatible instrumentation. The Lovato DM2T0400 converts a primary current of up to 400 A into a standard 5 A secondary output, enabling accurate electrical monitoring without connecting measuring equipment directly to the high-current circuit.
The solid-core format 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, load monitoring and power-system analysis.
Typical Applications
- Industrial switchboards and power-distribution panels.
- Energy meters and multifunction measuring instruments.
- Power analysers and electrical monitoring systems.
- Building energy-management systems.
- Industrial machinery and automation panels.
- Electrical load and demand monitoring.
- Commercial power-distribution installations.
- New panel-building and switchgear projects.
Technical Specifications
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| Rated Burden (VA) | 2 VA | |
|---|---|---|
| Device Type | Solid-core CT | |
| Rated Primary Current (A) | 400 A | |
| Secondary Current / Output | 5 A | |
| Aperture (mm) | 23 mm | |
| Current | 5 A | |
| Manufacturer | Lovato Electric | |
| Series | DM2T | |
| Model | DM2T0400 | |
| Product type | Solid-core current transformer | |
| Primary current | 400 A | |
| Secondary current | 5 A | |
| Transformation ratio | 400/5 A | |
| Opening diameter | 23 mm | |
| Rectangular opening | 30 × 10 mm | |
| Compatible busbars | 30 × 10 mm, 25 × 12.5 mm and 20 × 15 mm | |
| Burden at accuracy class 0.5 | 2 VA | |
| Burden at accuracy class 1 | 3 VA | |
| Overcurrent limiting factor | FS5 | |
| Operating frequency | 50/60 Hz | |
| Overload withstand | 120% of rated primary current | |
| Rated insulation voltage | 720 V | |
| Secondary connection | Screw connection | |
| Mounting method | Snap mounting | |
| Number of primary inputs | 1 | |
| Conformity | IEC/EN/BS 61869-1 and IEC/EN/BS 61869-2 | |
| Certification | EAC | |
| Product weight | approx. 160 g | |
| Package dimensions | 56 × 49 × 70 mm | |
| EAN | 8013975121832 | |
| HS Code | 85043180 |
Frequently Asked Questions
What is the Lovato DM2T0400 used for?
The DM2T0400 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.
What is the transformation ratio of the DM2T0400?
The current transformer has a 400/5 A transformation ratio, meaning that a nominal 400 A primary current corresponds to a 5 A secondary current.
What cable size can pass through the DM2T0400?
The transformer accommodates a round cable with a maximum diameter of approximately 23 mm.
Which busbar sizes are compatible with the DM2T0400?
The transformer is suitable for rectangular busbars measuring 30 × 10 mm, 25 × 12.5 mm or 20 × 15 mm.
Can the DM2T0400 be fitted around an existing connected cable?
No. The DM2T0400 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 disconnected.
Trusted Current Measurement from Lovato Electric
Lovato Electric current transformers are used by panel builders, electrical contractors and industrial engineers to provide accurate current measurement, straightforward integration and dependable performance in modern electrical distribution systems.
