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DM0T0040 Lovato CURRENT TRANSFORMER 40/5A
Lovato DM0T0040 is a solid-core 40/5 A current transformer with a 22 mm cable aperture, 5 A secondary output, 50–60 Hz operating frequency and DIN rail or screw mounting for electrical measurement and energy-monitoring applications.
£15.78
Why Choose the Lovato DM0T0040 Current Transformer?
The Lovato DM0T0040 is a compact solid-core current transformer designed to convert a primary current of 40 A into a standard 5 A secondary output for use with compatible electrical measuring instruments, energy meters and power analysers. Its through-hole construction accommodates a primary conductor up to Ø22 mm, making it suitable for current measurement in industrial and commercial electrical distribution systems.
Operating across a frequency range of 50–60 Hz, the DM0T0040 provides an accuracy burden of 1.25 VA at Class 3 and withstands continuous overload up to 120% of its rated primary current. The transformer has a rated insulation voltage of 720 V and Class E dry insulation for dependable operation in electrical switchboards and control panels.
Installation is flexible thanks to support for both DIN rail and screw fixing, while screw terminals provide a practical secondary connection. With IP30 protection and compliance with IEC/EN/BS 61869-1 and IEC/EN/BS 61869-2, the DM0T0040 provides a straightforward solution for integrating 40/5 A current measurement into metering and energy-monitoring systems.
Key Advantages
- 40/5 A transformation ratio for connection to compatible 5 A measuring instruments.
- Solid-core through-hole construction provides a simple and robust current-measurement solution.
- Accepts primary conductors up to Ø22 mm.
- 1.25 VA Class 3 burden for measurement applications.
- Supports 120% continuous overload of rated primary current.
- Flexible DIN rail or screw mounting.
- Screw-terminal secondary connection simplifies panel wiring.
- Complies with IEC/EN/BS 61869-1 and IEC/EN/BS 61869-2.
Key Features
- Lovato DM0T series current transformer.
- Solid-core current transformer design.
- 40 A primary rated current.
- 5 A secondary output current.
- Ø22 mm cable aperture.
- 50–60 Hz operating frequency.
- 1.25 VA burden at Class 3.
- 720 V rated insulation voltage.
- Class E dry insulation.
- IP30 protection rating.
- Screw terminals for the secondary circuit.
- DIN rail or screw fixing.
Reliable 40/5 A Current Measurement for Electrical Monitoring
A current transformer reduces the primary current flowing through an electrical conductor to a proportional secondary current that can be safely measured by compatible instrumentation. The Lovato DM0T0040 converts a nominal 40 A primary current to a standard 5 A secondary signal, enabling connection to suitable ammeters, multifunction meters, power analysers and energy-monitoring equipment.
Its solid-core design requires the primary conductor to pass through the Ø22 mm aperture, making it particularly suitable for new switchboard construction and installations where the conductor can be disconnected during fitting. DIN rail or screw fixing allows the transformer to be integrated conveniently into a wide variety of electrical panel layouts.
Typical Applications
- Electrical switchboards and distribution panels.
- Industrial current measurement systems.
- Digital ammeter installations.
- Power analyser current inputs.
- Energy and consumption monitoring systems.
- Building energy-management systems.
- Machine and production equipment monitoring.
- Industrial automation control panels.
- Commercial electrical distribution systems.
Technical Specifications
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| Rated Burden (VA) | 1.25 VA | |
|---|---|---|
| Device Type | Solid-core CT | |
| Rated Primary Current (A) | 40 A | |
| Secondary Current / Output | 5 A | |
| Aperture (mm) | 22 mm | |
| IP Rating | IP30 | |
| HS Code | 85389091 | |
| Manufacturer | Lovato Electric | |
| Series | DM0T | |
| Model | DM0T0040 | |
| Product type | Current transformer | |
| CT construction | Solid-core / through-hole | |
| Primary current Ipn | 40 A | |
| Secondary output current | 5 A | |
| Transformation ratio | 40/5 A | |
| Cable aperture | Ø22 mm | |
| Operating frequency | 50–60 Hz | |
| Continuous overload withstand | 120% of Ipn | |
| Burden | 1.25 VA at Class 3 | |
| Rated insulation voltage Ui | 720 V | |
| Insulation | Dry type, Class E | |
| Terminals | Screw | |
| Fixing | DIN rail or screw | |
| Protection rating | IP30 | |
| Operating temperature | -25 to +50 °C | |
| Storage temperature | -40 to +80 °C | |
| Maximum relative humidity | 90% | |
| Approximate dimensions | 44 × 66 × 32 mm | |
| Standards | IEC/EN/BS 61869-1, IEC/EN/BS 61869-2 | |
| Certification | EAC | |
| EAN | 8013975245255 |
Frequently Asked Questions
What is the Lovato DM0T0040 used for?
The DM0T0040 is a solid-core current transformer used to convert a primary current of 40 A into a proportional 5 A secondary current for compatible electrical meters, power analysers and monitoring equipment.
What is the current ratio of the Lovato DM0T0040?
The DM0T0040 has a current transformation ratio of 40/5 A, meaning its nominal 40 A primary current corresponds to a 5 A secondary output.
What cable size can pass through the DM0T0040?
The solid-core transformer has a circular aperture designed for a primary conductor with a maximum diameter of Ø22 mm.
What is the accuracy burden of the DM0T0040?
The Lovato DM0T0040 has a specified burden of 1.25 VA at Class 3.
What frequency range does the DM0T0040 support?
The current transformer is designed for electrical systems operating at 50–60 Hz.
How is the Lovato DM0T0040 mounted?
The DM0T0040 can be installed using either DIN rail mounting or screw fixing, providing flexibility when installing it inside electrical panels and switchboards.
What is the protection rating of the DM0T0040?
The Lovato DM0T0040 has an IP30 protection rating and is intended for installation within suitable electrical equipment and enclosures.
Which standards does the DM0T0040 comply with?
The DM0T0040 conforms to IEC/EN/BS 61869-1 and IEC/EN/BS 61869-2 standards for instrument and current transformers.
Trusted for Electrical Current Measurement
Lovato Electric current transformers provide practical current-measurement solutions for panel builders, electrical engineers and energy-management professionals, supporting the integration of standardised current signals with compatible metering, monitoring and power-analysis equipment.
