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.
£17.53
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.
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.
| 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 |
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.
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.
The solid-core transformer has a circular aperture designed for a primary conductor with a maximum diameter of Ø22 mm.
The Lovato DM0T0040 has a specified burden of 1.25 VA at Class 3.
The current transformer is designed for electrical systems operating at 50–60 Hz.
The DM0T0040 can be installed using either DIN rail mounting or screw fixing, providing flexibility when installing it inside electrical panels and switchboards.
The Lovato DM0T0040 has an IP30 protection rating and is intended for installation within suitable electrical equipment and enclosures.
The DM0T0040 conforms to IEC/EN/BS 61869-1 and IEC/EN/BS 61869-2 standards for instrument and current transformers.
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.
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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...