DM1TP0300 Lovato CURRENT TRANSFORMER D28MM 300/5A

Why Choose the Lovato DM1TP0300 Current Transformer?

The Lovato DM1TP0300 is a precision solid-core current transformer designed to convert a primary current of 300 A into a standard 5 A secondary output for compatible energy meters, multifunction instruments and power analysers. Its through-hole construction provides a Ø28 mm aperture for cables and also accommodates selected rectangular busbars.

Designed for accurate electrical measurement, the DM1TP0300 provides Class 0.5s accuracy at 2.5 VA and Class 0.5 accuracy at 5 VA. It operates across 50–60 Hz, supports continuous overload up to 120% of rated primary current and has a rated insulation voltage of 720 V.

The transformer can accommodate 30 × 10 mm, 25 × 15 mm and 20 × 20 mm busbars as well as suitable cables through its circular aperture. Screw secondary terminals and the choice of DIN rail or screw fixing make the DM1TP0300 a practical solution for switchboards, metering panels and industrial energy-monitoring installations.

Key Advantages

• 300/5 A transformation ratio for standard 5 A metering inputs.
• Class 0.5s accuracy at 2.5 VA for precision energy measurement.
• Class 0.5 accuracy at 5 VA provides additional measurement capability.
• Large Ø28 mm cable aperture for convenient conductor installation.
• Accommodates 30 × 10 mm, 25 × 15 mm and 20 × 20 mm busbars.
• Supports 120% continuous overload relative to rated primary current.
• 720 V rated insulation voltage.
• Flexible DIN rail or screw mounting.
• Complies with IEC/EN/BS 61869-1 and IEC/EN/BS 61869-2.

Key Features

• Lovato DM1TP precision current transformer.
• Solid-core through-hole construction.
• 300 A primary rated current.
• 5 A secondary output current.
• Ø28 mm circular aperture.
• Compatible with 30 × 10 mm, 25 × 15 mm and 20 × 20 mm busbars.
• 50–60 Hz operating frequency.
• 2.5 VA burden at Class 0.5s.
• 5 VA burden at Class 0.5.
• Class E dry insulation.
• Screw-terminal secondary connection.
• DIN rail or screw fixing.
• IP30 protection rating.

Precision 300/5 A Current Measurement

A current transformer converts the higher current flowing through a primary conductor into a proportional secondary current suitable for electrical measuring instruments. The Lovato DM1TP0300 converts a nominal 300 A primary current into a standard 5 A secondary signal, allowing compatible energy meters, ammeters and power analysers to monitor higher-current circuits accurately.

The Ø28 mm aperture accepts suitable cables, while compatibility with 30 × 10 mm, 25 × 15 mm and 20 × 20 mm busbars provides flexibility for switchboard installations. Its Class 0.5s accuracy at 2.5 VA makes the DM1TP0300 particularly suitable for energy-monitoring applications where precise current transformation is required.

Typical Applications

• Three-phase and single-phase energy-metering systems.
• Industrial electrical switchboards.
• Commercial distribution panels.
• Multifunction electrical meters.
• Power and network analysers.
• Building energy-management systems.
• Industrial energy monitoring.
• Busbar-based electrical distribution systems.
• Machine and production equipment monitoring.
• Electrical load and consumption analysis.