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.
DM35T1250 Lovato CURRENT TRANSFORMER D66MM 1250/5A
Lovato DM35T1250 is a solid-core 1250/5 A current transformer with a Ø66 mm cable aperture and support for large busbars, designed for high-current electrical metering and energy-monitoring applications.
£71.92
Why Choose the Lovato DM35T1250 Current Transformer?
The Lovato DM35T1250 is a high-capacity solid-core current transformer designed for accurate AC current measurement in industrial electrical distribution, energy monitoring and metering systems. Part of the Lovato DM35T current transformer series, it provides a 1250/5 A transformation ratio, converting a rated primary current of 1250 A into a standard 5 A secondary current for compatible measuring instruments.
The DM35T1250 features a large Ø66 mm circular aperture for suitable cables and also accommodates 80 × 12.5 mm, 60 × 30 mm and 50 × 50 mm busbars. This makes it particularly suitable for high-current switchboards, distribution panels and industrial installations where substantial conductors need to be monitored.
Operating at 50–60 Hz, the transformer provides class 0.5 accuracy at 15 VA and class 1 accuracy at 20 VA. Its 720 V rated insulation voltage, IP30 protection, screw terminals and DIN rail or screw mounting provide a robust and practical solution for demanding electrical metering applications.
Key Advantages
- High-capacity 1250/5 A current transformation ratio.
- Ø66 mm cable aperture for large electrical conductors.
- Compatible with 80 × 12.5 mm, 60 × 30 mm and 50 × 50 mm busbars.
- Class 0.5 accuracy at 15 VA for precision current measurement.
- Standard 5 A secondary output for compatible metering equipment.
- 120% continuous overload withstand relative to rated primary current.
- Flexible DIN rail or screw mounting for electrical panel installation.
Key Features
- Lovato DM35T current transformer series.
- 1250 A rated primary current.
- 5 A rated secondary current.
- 1250/5 A transformation ratio.
- 50–60 Hz operational frequency.
- 15 VA burden at class 0.5.
- 20 VA burden at class 1.
- Ø66 mm circular conductor aperture.
- 720 V rated insulation voltage.
- Dry-type Class E insulation.
- Screw-type secondary terminals.
- IP30 protection rating.
Reliable High-Current Measurement for Electrical Monitoring
Current transformers reduce large primary currents to a proportional secondary current that can be safely measured by compatible instrumentation. The Lovato DM35T1250 converts a 1250 A primary current into a standard 5 A secondary current, allowing energy meters, ammeters and power analysers to monitor substantial electrical loads without carrying the full primary current through the measuring instrument.
The large Ø66 mm aperture and compatibility with several common busbar dimensions make the DM35T1250 particularly suitable for high-current distribution systems. Its class 0.5 measurement performance, robust solid-core construction and flexible mounting options provide reliable integration into industrial switchboards, energy-management systems and electrical monitoring installations.
Typical Applications
- High-current industrial electrical distribution systems.
- Main switchboards and distribution panels.
- Commercial and industrial energy metering.
- Busbar current measurement installations.
- Industrial power and load monitoring.
- Power analysers and multifunction electrical meters.
- Building and plant energy-management systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Rated Burden (VA) | 15 VA | |
|---|---|---|
| Rated Primary Current (A) | 1250 A | |
| Secondary Current / Output | 5 A | |
| Aperture (mm) | 66 mm | |
| Device Type | Solid-core CT | |
| IP Rating | IP30 | |
| HS Code | 85043180 | |
| Manufacturer | Lovato Electric | |
| Series | DM35T Current Transformers | |
| Model | DM35T1250 | |
| Product type | Solid-core current transformer | |
| Primary current | 1250 A | |
| Secondary current | 5 A | |
| Transformation ratio | 1250/5 A | |
| Operational frequency | 50–60 Hz | |
| Burden at class 0.5 | 15 VA | |
| Burden at class 1 | 20 VA | |
| Continuous overload withstand | 120% Ipn | |
| Rated insulation voltage | 720 V | |
| Insulation | Dry type, Class E | |
| Cable aperture | Ø66 mm | |
| Compatible busbars | 80 × 12.5 mm, 60 × 30 mm, 50 × 50 mm | |
| Terminal type | Screw | |
| Fixing | DIN rail or screw mounting | |
| Protection rating | IP30 | |
| Dimensions | approx. 105 × 126.5 × 41.5 mm | |
| Operating temperature | -25 to +50 °C | |
| Storage temperature | -40 to +80 °C | |
| Maximum relative humidity | 90% |
Frequently Asked Questions
What is the Lovato DM35T1250 used for?
The DM35T1250 is a solid-core current transformer used for AC current measurement in high-current electrical distribution, industrial metering and energy-monitoring systems.
What is the current ratio of the Lovato DM35T1250?
The transformer has a 1250/5 A ratio, converting a rated primary current of 1250 A into a standard 5 A secondary current.
What conductor sizes can the DM35T1250 accommodate?
The DM35T1250 has a Ø66 mm cable aperture and can accommodate compatible busbars measuring 80 × 12.5 mm, 60 × 30 mm or 50 × 50 mm.
What accuracy does the Lovato DM35T1250 provide?
The transformer provides class 0.5 accuracy at 15 VA and class 1 accuracy at 20 VA, making it suitable for electrical measurement and energy-monitoring applications.
How is the Lovato DM35T1250 installed?
The solid-core transformer is installed with the primary cable or busbar passing through its aperture and can be secured using DIN rail or screw mounting within a suitable electrical panel or switchboard.
Trusted by Electrical and Energy Management Professionals
Lovato Electric current transformers provide dependable measurement for industrial electrical distribution, energy metering and power-monitoring systems, with the DM35T range offering robust solid-core construction for demanding high-current installations.
