Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
DM1TMA0250 – SPLIT C/TRANSFORMER 250/5A 50X80MM
Lovato DM1TMA0250 compact prewired split-core current transformer with a 250/5 A transformation ratio, 24 x 24 mm opening, class 1 accuracy, 1 VA burden and 2 m secondary cable.
£106.47
Why Choose the Lovato DM1TMA0250 Compact Split-Core Current Transformer?
The Lovato DM1TMA0250 is a compact split-core current transformer designed for accurate current measurement in industrial and commercial electrical installations. Featuring a 250/5 A transformation ratio, it converts high primary currents into a standard 5 A secondary output for connection to energy meters, multifunction measuring instruments, power analysers and protection devices.
Its split-core construction allows installation around existing conductors without disconnecting the primary circuit, making it an excellent choice for retrofit energy monitoring, switchboard upgrades and preventative maintenance projects. This reduces installation time while minimising disruption to operational equipment.
The DM1TMA0250 features a compact housing with a 24 × 24 mm internal opening and is supplied complete with a 2 m prewired secondary cable for straightforward installation. Operating at 50/60 Hz with Class 1 accuracy and a 1 VA rated burden, it delivers dependable performance for electrical monitoring and energy management applications.
Key Advantages
- Compact split-core construction allows installation without disconnecting conductors.
- 250/5 A transformation ratio for standard industrial measuring equipment.
- 24 × 24 mm aperture accommodates common cables and busbars.
- Supplied with a 2 m prewired secondary cable for rapid installation.
- Class 1 measurement accuracy for reliable current monitoring.
- Ideal for retrofit energy monitoring and electrical panel upgrades.
Key Features
- Lovato DM1TMA series compact split-core current transformer.
- 250 A rated primary current.
- 5 A rated secondary current.
- Compact split-core construction.
- 24 × 24 mm internal opening.
- 1 VA rated burden.
- Accuracy class 1.
- 50/60 Hz operating frequency.
- 720 V rated insulation voltage.
- Supplied prewired with a 2 m connection cable.
Reliable Current Monitoring for Existing Installations
Current transformers safely convert high electrical currents into proportional low-current signals suitable for measuring equipment. The Lovato DM1TMA0250 converts currents up to 250 A into a standard 5 A secondary output, allowing accurate monitoring of electrical loads without direct connection to high-current conductors.
Its compact split-core design is ideal for retrofit installations where existing conductors cannot easily be disconnected. Combined with the supplied prewired cable, installation is fast and straightforward while supporting reliable energy monitoring and electrical diagnostics.
Typical Applications
- Energy monitoring systems.
- Commercial distribution boards.
- Industrial switchboards.
- Power analysers and multifunction meters.
- Building management systems.
- Electrical load monitoring.
- Industrial automation panels.
- Retrofit metering installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Rated Burden (VA) | 1 VA | |
|---|---|---|
| Rated Primary Current (A) | 250 A | |
| Secondary Current / Output | 5 A | |
| Accuracy Class | Class 1 | |
| Device Type | Split-core CT | |
| Current | 5 A | |
| Manufacturer | Lovato Electric | |
| Series | DM1TMA | |
| Model | DM1TMA0250 | |
| Product type | Compact prewired split-core current transformer | |
| Primary current | 250 A | |
| Secondary current | 5 A | |
| Transformation ratio | 250/5 A | |
| Internal opening | 24 × 24 mm | |
| Accuracy class | Class 1 | |
| Rated burden | 1 VA | |
| Operating frequency | 50/60 Hz | |
| Overload withstand | 120% of rated primary current | |
| Rated insulation voltage | 720 V | |
| Insulation class | Class E | |
| Secondary connection | 2 m prewired cable | |
| Operating temperature | -25°C to +50°C | |
| Storage temperature | -40°C to +80°C | |
| Relative humidity | 90% max. | |
| Conformity | IEC/EN/BS 61869-1 & IEC/EN/BS 61869-2 | |
| Certification | CE, UKCA, EAC | |
| Weight | approx. 200 g | |
| EAN | 8013975219034 | |
| HS Code | 85043180 |
Frequently Asked Questions
What is the Lovato DM1TMA0250 used for?
The DM1TMA0250 measures electrical currents up to 250 A and provides a standard 5 A secondary output for compatible metering and monitoring equipment.
Can it be installed without disconnecting the primary conductor?
Yes. Its split-core construction allows the transformer to be fitted around an existing conductor without disconnecting the primary circuit.
What size conductor can it accommodate?
The transformer features a 24 × 24 mm internal opening suitable for compatible cables and busbars.
Is the transformer supplied with connection leads?
Yes. The DM1TMA0250 is supplied prewired with a 2 m secondary connection cable for quick installation.
Which standards does the DM1TMA0250 comply with?
The transformer complies with IEC/EN/BS 61869-1 and IEC/EN/BS 61869-2 current transformer standards.
Trusted by Electrical Professionals Worldwide
Lovato Electric current transformers are trusted by panel builders, electrical contractors and industrial engineers for reliable current measurement, simple installation and dependable long-term performance.
