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.
DM1TA0300 – SPLIT C/TRANSFORMER 300/5A 50X80MM
Lovato DM1TA0300 split-core current transformer with a 300/5 A ratio, 52 x 80 mm opening, Class 0.5 accuracy at 1.5 VA and Class 1 accuracy at 3 VA for electrical metering and energy monitoring.
£103.18
Why Choose the Lovato DM1TA0300 Split-Core Current Transformer?
The Lovato DM1TA0300 is a reliable split-core current transformer designed for accurate electrical current measurement in industrial and commercial power systems. Featuring a 300/5 A transformation ratio, it converts a primary current of 300 A into a standard 5 A secondary signal for compatible multifunction meters, energy analysers and monitoring equipment.
Its split-core construction allows the transformer to be opened and fitted around an existing conductor without disconnecting the cable or busbar. This makes the DM1TA0300 particularly suitable for retrofit energy-monitoring projects, electrical system upgrades and installations where interrupting the power supply would be impractical.
With a spacious 52 × 80 mm internal opening, Class 0.5 accuracy at 1.5 VA and Class 1 accuracy at 3 VA, the DM1TA0300 provides dependable measurement performance for switchboards, distribution panels and energy-management systems. Its robust insulated construction and standard 5 A output make it a practical choice for professional electrical installations.
Key Advantages
- Accurate 300/5 A current transformation ratio.
- Split-core construction allows installation around existing conductors.
- Large 52 × 80 mm internal opening for cables and busbars.
- Class 0.5 accuracy at 1.5 VA for precision measurement.
- Class 1 accuracy at 3 VA for general metering applications.
- Standard 5 A secondary output for compatible measuring instruments.
Key Features
- Lovato DM series split-core current transformer.
- 300 A rated primary current.
- 5 A rated secondary current.
- 52 × 80 mm rectangular aperture.
- Class 0.5 accuracy with a 1.5 VA burden.
- Class 1 accuracy with a 3 VA burden.
- Suitable for 50/60 Hz electrical systems.
- 720 V rated insulation voltage.
- Continuous overload capability of 120% of rated primary current.
- Screw-terminal secondary connections.
- Secure fixing for switchboard and panel installation.
Convenient Retrofit Current Measurement
Unlike a solid-core transformer, the Lovato DM1TA0300 can be opened and installed around an existing conductor. This enables current measurement equipment to be added to operational switchboards without removing cable terminations or passing the conductor through a closed transformer aperture.
The standard 5 A secondary output is compatible with a broad range of multifunction meters and power analysers. Its large rectangular opening accommodates substantial cables and busbars, while its two accuracy and burden ratings provide flexibility for precision metering and general electrical monitoring.
Typical Applications
- Retrofit energy-monitoring systems.
- Industrial power distribution panels.
- Low-voltage switchboards.
- Multifunction electrical meters.
- Energy management systems.
- Power quality analysers.
- Motor control centres.
- Commercial and industrial building services.
Technical Specifications
Tick the specs you need, then view products that match.
| Mounting Type | Busbar, Cable, Panel / base | |
|---|---|---|
| Rated Primary Current (A) | 300 A | |
| Secondary Current / Output | 5 A | |
| Accuracy Class | Class 0.5 | |
| Device Type | Split-core CT | |
| Current | 5 A | |
| Manufacturer | Lovato Electric | |
| Series | DM | |
| Model | DM1TA0300 | |
| Product type | Split-core current transformer | |
| Primary current | 300 A | |
| Secondary current | 5 A | |
| Transformation ratio | 300/5 A | |
| Accuracy class at 1.5 VA | Class 0.5 | |
| Accuracy class at 3 VA | Class 1 | |
| Rated frequency | 50 / 60 Hz | |
| Internal opening | 52 × 80 mm | |
| Core type | Split core | |
| Rated insulation voltage | 720 V | |
| Continuous overload withstand | 120% of rated primary current | |
| Short-time thermal current | 40–60 × rated primary current for 1 second | |
| Dynamic current withstand | 2.5 × short-time thermal current | |
| Secondary connection | Screw terminals | |
| Mounting | Panel, cable or busbar fixing | |
| Weight | Approximately 1.01 kg | |
| EAN | 8013975178577 | |
| Certification | EAC | |
| Conformity | IEC/EN 60044-1 | |
| HS Code | 85389091 |
Frequently Asked Questions
What is the Lovato DM1TA0300 used for?
The DM1TA0300 converts a 300 A primary current into a standard 5 A secondary signal for compatible electrical meters, power analysers and energy-monitoring equipment.
Can the DM1TA0300 be installed around an existing conductor?
Yes. Its split-core construction allows it to be opened and installed around an existing cable or busbar without disconnecting the primary conductor.
What is the internal opening of the DM1TA0300?
The current transformer has a rectangular internal opening measuring 52 × 80 mm.
What accuracy does the DM1TA0300 provide?
It provides Class 0.5 accuracy at a 1.5 VA burden and Class 1 accuracy at a 3 VA burden.
Which instruments can be connected to the DM1TA0300?
The transformer can be connected to compatible multifunction meters, energy analysers and monitoring devices designed for a standard 5 A current-transformer input.
Trusted for Industrial Energy Monitoring
Lovato split-core current transformers are widely used by panel builders, electrical contractors and energy specialists to add dependable current measurement to new and existing power distribution systems.
